I haul cryogenic liquids; liquid oxygen, argon , nitrogen and carbon dioxide. Cryogenic liquids are in a liquid form when kept at temperatures well below zero fahrenheit. At these temperatures the product creates a lot of pressure. There is a valve called a road relief valve that I crack open to help ventilate the pressure. I am a local driver and I do multi stop deliveries, after unloading my first stop the remaining liquid has room to move back and forth while I'm driving. This can be very dangerous if you aren't careful with your turns or braking actions, especially on wet or slippery pavement. Cryogenic tankers are heavily insulated, and have a plumbing system of multiple valves for loading and unloading product, also most of the trailers contain a pony motor mounted under the trailer for the unloading of product. CO 2 are slightly different, the pony motor by means of a flow valve can unload or load CO 2. My favorite product to transport is CO 2 because CO 2 is easy to unload and load. However CO 2 is usually under 300 pounds of pressure and can be very dangerous if not handled correctly. Cryogenic tankers are very expensive because of their construction. A new liquid nitrogen trailer is over $250,000 . A new liquid hydrogen trailer is over $2,000,000. Liquid hydrogen trailers are very unique. There are two layers to the tank. The outer layer is filled with liquid nitrogen ( nitrogen suffocates fire by temporarily displacing oxygen) the inner layer/tank is filled with liquid hydrogen. Liquid hydrogen can be very dangerous. When liquid hydrogen is exposed to oxygen it will ignite and combust. When it burns it will produce a very light blue almost invisible flame. This is why liquid nitrogen is in the outer shell of the trailer.
Last month here in India I saw a hydrogen carrying truck for the first time, but we use 40 or 50 individual interconnected small cylinders that are permanently mounted on truck bed instead of a single huge tank. We use the same configuration for CNG but use a huge tanker trailer for LPG. Is transporting in above mentioned way safer than a single tank?
Hmm forget boosting the gasoline... boost the tanker. Good 2 know. 😊 Seriously tho, thank you so very much 4 driving. I still ponder getting into driving because at my age it is not to late and I can provide 4 my family. Stay safe my friend, stay safe.
I witnessed a cryogenic tank unloading at a beer brewery once. There was a large purge that went on for a few minutes. I wasn't sure it was normal so that was a bit unnerving..
Milk tanker driver here and also hopper trailers. Good points made in video, with milk, we can’t have any baffles at all, so all are either one big tank, or two separate tanks in on trailer. As we go from pickup farm to pickup farm, I’m the two pot we alternate which tank gets milk at which stop to try to keep the weights more even, also, the testing samples taken at each stop get batched in with the others in that particular tank, it is a real potential that one bad pickup farm can ruin several others, and can also effect the prices they are paid. Another big item is the cleaning, you have to show its last cleaning tag and milk can be rejected if not within time limits, but some will take longer and some shorter depending on what products they are making. Also, stainless steel has one huge weakness, if cleaned with too high of a concentrated chlorine, it will actually begin to rust, and fast. I’ve never seen it ruin a tanker but have seen it ruin the sampler and on one occasion the bulk tank at a farm. When the tank is just the right amount off full, all that milk moving can sometimes feel like someone hit your truck at a stop sign, there’s a lot of force there.
Chemical tank driver: our trailers don’t have baffles either and are very similar to food grade tanks, except our are often built to handle high temperatures. Many chemicals are temperature sensitive and are transported warm or even hot.
as a regular driver who pulled flat beds and normal trailers i tried one of these one time. oh man i couldnt even shift properly. hats off to the tanker guys
Many drivers struggle to transition to tankers. In many cases drivers that haul baffled tankers struggle with un baffled tankers. I hauled fuel tanker (baffled and compartmentalized) for many years and I initially struggled with un baffled tankers. It’s an art form to speed up and slow down with these tanks. Even those with experience get slammed every now and then.
A man I knew was transpoting bulk cement powder. The presure reliefe valve malfunctioned, and there was a blockage in the hose, unloading the powder. He always stayed with the truck while unloading. This one day he decided to go to a shop across the road, and have a meal. That decision saved his life. The tanker exploded, and schapnell went in every direction, like a huge bomb.
Retired now, but used to own a gas station. In the early years under Chevron, and then independent. When ordering fuel you had to know which tank trailers were available because they had partitions within the trailer. You had to match what you wanted in terms of regular, mid grade And premium. With what tanker was available. Quite a calculation. Sometimes you had to over order one to under order another later just to fill your underground tanks. And then, of course, there was a gamble on price fluctuations. Do you over order now because the price goes up or do you lose because the price goes down? The gas business is more complicated than many understand. Such fun. 😊
The first time I hauled hot oil for road construction I was forced through a red light due to the surge the load produced. It was an "enlightening" experience. I moved on to eventually haul double milk tankers in Upstate NY (NYS Thruway), not a lot of slowing and increasing speed as a rule but when cars did stupid stuff it was "entertaining", but more often dangerous. I don't miss driving anymore. I thought I would end up retiring from trucking but took a different path after 25 years. New position was a much easier job...
About 40 years ago I learned to drive a fire department tanker. Only 3,000 gallons, and it was full when we started out, so no real surge issues. Coming back with it half empty was quite a different story. Took a bit to learn how to manage all the corners, grades, and random stops in a rural mountainous fire district!
The term you want to use is surge, not sloshing. That being said, this would have been a good training video to watch several years ago when I started hauling fuel tankers.
One other consideration is cost of construction. A sphere has the lowest surface area to volume ratio, meaning it takes less material to construct for the volume it can hold. But putting a sphere on a truck doesn't work all that well because when you increase the length, you also increase the height. You can only go so high and still make it under the bridge. So the next best solution is a cylinder.
Former gas hauler in the United States here. Diesel weighs more than gasoline, so by volume I would typically only haul 7500-7600 gallons of ulsd. If I was pulling a load of straight gas in the summer, I would usually load about 8800-8900 gallons. In the winter when the fuel is colder, it is denser. It makes a negligible difference for 10-15 gallons in your car, but makes a big difference with thousands of gallons. I might only pull 8600 gallons in the winter. One other fun fact, in a fire it isn't the liquid gasoline that burns, but rather the gasoline vapors. That is why some fuel haulers say the most dangerous part of a trip isn't when they are loaded but actually when they have unloaded and have nothing but gaseous vapors in the tank. Oh, and by volume, most fuel.tankers in North America can hold 9200-9400 gallons, but this would make them overweight in most states (except Michigan. Look up "Michigan fuel hauler" to see some massive trucks).
Unless you're like the guy in the video dropping unleaded. He doesn't have a vapor recovery. Also diesel doesn't atomize so you're pretty safe with that.
While the round shape does even out the pressure, the main reason for the round shape is that it reduces the surface area needed to enclose a volume and less surface area means less material, which allows more of the trailer weight to be payload.
Lol as an ex milk man I know it’s called food grade stainless steel it’s a special stainless. But I haven’t ever heard of one with refrigeration built in to it they have 8 inches of foam around them then another layer of stainless around that gotta load the product under 40 and then it’s just a beat the time game. But I know for who I hauled for it could sit 2-3 days in the tanker and it still only be 40 degrees in 95 degree sun absolutely blew my mind how long you could keep that product cold for
Milk is hauled from here in south PA to Miami. They tell me it usually only gains 1 degree. Insulation and thermal mass. I've hauled fresh peanuts from Arkansas to the Norfolk area in a dry van. They were cold when I closed the doors, and two days later when I opened them they were still noticeably cold. 48,000# of cold stuff doesn't warm up quick.
@@tuckercole4191And the same goes for chemical trailers. Most of these trailers don't have baffles for the same reason. Missed areas that weren't cleaned properly due to the baffles could cause cross-contamination and the load could effectively be rejected by a consignee/customer.
H=Hazmat N=Tanker X= Tanker and Hazmat together. Plus if you have your hazmat endorsement you also automatically get TSA pre check on flights in the US.
@@xpunk77x Here in Canada all you need iss a driver's license for the class of vehicle you drive, but you need endorsement (not in the license, but a different ticket) for some industries. I haul crude oil and produced water. All I need is my class 1 license. I used to haul Jet A1. For that I had to get my CFA (Canadian Fuel Assossiation) endorsement. Nothing different in my license.
When youre talking about intertia youre actually talking about the free surfice effect. Fill the tank completely full and it will behave the same as a solid intertia wise. Its the slushing caused by there being free room to slush that is the problem. Casual navigator explains this a lot better, most likely because unlike trucks that will stay on land if they flip over, ships will sink if you fill the cargo holds worng.
I've been hauling milk for 15 years now. Our trailers don't have refrigation. They are stainless tanks insulated with a layer of Styrofoam. The large volume of milk is mainly what helps keep them cold. I've been told the trailers can sit in the parking lot on 100 degree day for 24 hours and only go up two degrees fahrenheit.
As a man who took calculus 3 times and passed the 3rd time with an A. My explanation is that the efficiency for maximum volume of a shape to its surface area is the question to ask. A sphere is the maximum efficiency for volume using the least material next is pill shape where an axis is elongated. Then when considering the practicality of manufacturing and structural integrity, you get a tube that is somewhat "pill shaped" the most practical volume for material to contain the liquid.
It was my understanding that milk trailers were not refrigerated at all, because the volume of the liquid is adequate to maintain it's temperature for the short trips dairy products endure.
Haven't even properly gotten into the intro. Only a second in. But my guess is that because you are hauling liquids and liquids hold to the shape of the container, you might as well make something that is relatively aerodynamic.
Been driving tankers for 14 years now, lately I’ve been driving manure trailers designed for quick loading unloading taking around 6 minutes to load and unload approximately 38.000 kg, these trailers typically only have one baffle since they are either empty or fully loaded 95-99% full, safety wise there are no issues as the trailers are equipped with automatic load capacity checks, meaning I press a button and wait once full everything shuts off and I just put the loading crane back in place. And I’m done. The only other safety issues can be cross contamination of animal illnesses so between every farm the truck has to be fully cleaned and decontaminated to insure animal health
Very informative video, but I’m not sure if it was explained, but why do fuel tankers are elliptical in shape? And also I remember in Ecuador the fuel tankers have a loose chain touching the ground to avoid static electricity buildup that can cause an explosion, I think modern fuel tankers don’t have it correct? Can someone please clarify? Thanks
Most food grade tanks have no baffles the two worst food liquids I have hauled orange juice and molasses with molasses it moves slow you stop nice and gentle then on about 3 to 5 seconds it feels like ass ended you when you take of same deal. Except it feels like somebody threw an anchor out you can get used to it and get it smother
Haven't driven tankers but even cargo containers with bulk liquid in a bladder make sure you feel the difference hauling fluid takes. Even packaged fluid in large barrels has a noticibly affect on the handling and stopping/starting
Fuel tanker here. I pull a B train, two trailers, carrying 50 000 liters of fuel, a little over 13 000 US gallons. It's well baffled, so the front to back surge isn't too bad, but one has to be careful. Taking corners has to be done very carefully. I corner like your grandmother driving to church.
I believe the proper term for the sloshing liquid phenomena is free surface effect, although strangely I've not heard it used outside of a maritime context.
Fuel haulers are not made from aluminium or stainless because of corrosion resistance. They are made from those materials to lessen the possibility of fire should the truck roll over. Stainless and aluminium do not normally spark when they hit the asphalt like carbon steel would.
Only the first minute of this video relates to the cylindrical shape of a tanker, plus it's the same reason a can of coke is a cylinder rather than a cube which would be far more efficient in regards to space. This gets taught in primary school.
Same in the USA -- most trailers hauling liquids are oval (elliptical cross-section). The main exception I see is propane haulers -- those are steel and always cylindrical.
@@SplashJohnstainless and fibreglass tanks are often round where aluminum tanks are oval or elliptica. Stainless and fibreglass tanks are smaller tanks the are manufactured long and slim to lower the centre of gravity. Aluminums are build with the oval or elliptical shape and built longer and are slightly wider all to lower the centre of gravity.
Meanwhile in China, some hauling companies use the same containers for collecting septic waste/sewage and water/liquid food products without even cleaning them (not that it matters anyway lol).
Your videos are like a ray of sunshine in the gray of everyday life, which penetrates the heart and lifts the mood. Thank you for your cheerful creativity!🏀🏉✈️
I sometimes carry those pesky 5 gal water bottles for my water dispenser, 3 of them at a time in the trunk of my Subaru. Preventing them from rolling in the trunk is harder than you would think. If I am shopping for groceries in the same time, I can block them with my grocery bags, but I need to make sure that I don't crush the eggs or the milk bottles.😄
Greetings. Can a flexible fuel tank ("accordion-shaped") to leave no air space and prevent the liquid being transported from moving around prevent these problems? Thanks.
You should change the name of the video since the vast majority of the video has nothing to do with the title. There is two reasons they are cylinder shaped. First the sphere is the strongest shape for internal forces, a cylinder is an elongated sphere keeping that strength in two of the three directions. Secondly, a sphere holds the most volume per surface area, same logic. You somehow missed half of the answers in a video asking the question while giving half a dozen things completely unrelated...
They arnt, at least not in europe. They are made to maximize the load lower to the ground. The reason they use cylinders in usa is probobly because they use framless tankers and they are lighter. But in europe size co straints is more important than weight
I just did a quick search on google "europe tank trailer" and what I found is 95% of the trailers are built just like they are in the US. Why is it every time something trucking related shows up Europeans have to try to make it out like things are so much different or better than it is.
First time I was in China, I was wondering, how come every time I ate something that was deep fried I was ready to take out the world like Duke Nukem! Now, I know why! Honestly, though anytime I’m in China I’m very cautious what I eat! Not because of my weight, I don’t gain weight! However, gutter oil just something I can’t eat!
I think I must have hauled the most strange cargo, in a tank. For fours winters, i had to go to horse farms, and pick up Pregnant Mare Urine or PMU, as we called it, from bulk tanks. And it had to be kept below 34 degrees F. It was processed in Albert Lea, MN.
Would love a video on placarding of tanker trucks. I'd sure love to know if I come up to a tanker to see the placard and know what he's carrying. Do I pass and get him behind me or just stay where I am.
Google the number on the placard. It's not easy to find, Google needs to fix that. But if you Google it, eventually, after scrolling through a few pages of meaningless results, you will find the answer
"When a truck accelerates, brakes, or turns..."? Oops, that doesn't make sense, TT. Braking and turning ARE acceleration. What word or words do you think would better fit for that first item of the list?
@@SlyNine he was right to refer to the truck accelerating or braking. By the dictionary those are two different things. The liquid inside, however, accelerates under both.
I haul cryogenic liquids; liquid oxygen, argon , nitrogen and carbon dioxide. Cryogenic liquids are in a liquid form when kept at temperatures well below zero fahrenheit. At these temperatures the product creates a lot of pressure. There is a valve called a road relief valve that I crack open to help ventilate the pressure. I am a local driver and I do multi stop deliveries, after unloading my first stop the remaining liquid has room to move back and forth while I'm driving. This can be very dangerous if you aren't careful with your turns or braking actions, especially on wet or slippery pavement. Cryogenic tankers are heavily insulated, and have a plumbing system of multiple valves for loading and unloading product, also most of the trailers contain a pony motor mounted under the trailer for the unloading of product. CO 2 are slightly different, the pony motor by means of a flow valve can unload or load CO 2. My favorite product to transport is CO 2 because CO 2 is easy to unload and load. However CO 2 is usually under 300 pounds of pressure and can be very dangerous if not handled correctly. Cryogenic tankers are very expensive because of their construction. A new liquid nitrogen trailer is over $250,000 . A new liquid hydrogen trailer is over $2,000,000. Liquid hydrogen trailers are very unique. There are two layers to the tank. The outer layer is filled with liquid nitrogen ( nitrogen suffocates fire by temporarily displacing oxygen) the inner layer/tank is filled with liquid hydrogen. Liquid hydrogen can be very dangerous. When liquid hydrogen is exposed to oxygen it will ignite and combust. When it burns it will produce a very light blue almost invisible flame. This is why liquid nitrogen is in the outer shell of the trailer.
Thank you, very interesting insights
Last month here in India I saw a hydrogen carrying truck for the first time, but we use 40 or 50 individual interconnected small cylinders that are permanently mounted on truck bed instead of a single huge tank. We use the same configuration for CNG but use a huge tanker trailer for LPG. Is transporting in above mentioned way safer than a single tank?
Hmm forget boosting the gasoline... boost the tanker. Good 2 know. 😊
Seriously tho, thank you so very much 4 driving. I still ponder getting into driving because at my age it is not to late and I can provide 4 my family.
Stay safe my friend, stay safe.
I witnessed a cryogenic tank unloading at a beer brewery once. There was a large purge that went on for a few minutes. I wasn't sure it was normal so that was a bit unnerving..
@@IxoraNeradon't trust india, sometimes, you don't know, it could be that a explosion happens in a high traffic, area
Milk tanker driver here and also hopper trailers. Good points made in video, with milk, we can’t have any baffles at all, so all are either one big tank, or two separate tanks in on trailer. As we go from pickup farm to pickup farm, I’m the two pot we alternate which tank gets milk at which stop to try to keep the weights more even, also, the testing samples taken at each stop get batched in with the others in that particular tank, it is a real potential that one bad pickup farm can ruin several others, and can also effect the prices they are paid. Another big item is the cleaning, you have to show its last cleaning tag and milk can be rejected if not within time limits, but some will take longer and some shorter depending on what products they are making. Also, stainless steel has one huge weakness, if cleaned with too high of a concentrated chlorine, it will actually begin to rust, and fast. I’ve never seen it ruin a tanker but have seen it ruin the sampler and on one occasion the bulk tank at a farm. When the tank is just the right amount off full, all that milk moving can sometimes feel like someone hit your truck at a stop sign, there’s a lot of force there.
Chemical tank driver: our trailers don’t have baffles either and are very similar to food grade tanks, except our are often built to handle high temperatures. Many chemicals are temperature sensitive and are transported warm or even hot.
@ that’s wild! Typically heat is energy and I’d expect to avoid adding heat, unless it’s needed to keep it liquid, interesting stuff!
Great post! Been there, done that. Definitely have to start off slow so as not to tear up the old single countershaft transmissions and brake slowly.
@@waynenocton many of the chemicals that need heat either thicken or harden once cooled
Why clean with chlorine? We use acid and alkaline detergents that don't damage stainless steel.
as a regular driver who pulled flat beds and normal trailers i tried one of these one time. oh man i couldnt even shift properly. hats off to the tanker guys
Thanks -as fuel hauling and ethanol now you know 😅
And they became roommates of the road.
Many drivers struggle to transition to tankers. In many cases drivers that haul baffled tankers struggle with un baffled tankers. I hauled fuel tanker (baffled and compartmentalized) for many years and I initially struggled with un baffled tankers. It’s an art form to speed up and slow down with these tanks. Even those with experience get slammed every now and then.
You'll learn how to shift VERY smoothly, in a hurry !
A man I knew was transpoting bulk cement powder. The presure reliefe valve malfunctioned, and there was a blockage in the hose, unloading the powder. He always stayed with the truck while unloading. This one day he decided to go to a shop across the road, and have a meal. That decision saved his life. The tanker exploded, and schapnell went in every direction, like a huge bomb.
top 10 things that never happened
Shrapnel. You're welcome.
Retired now, but used to own a gas station. In the early years under Chevron, and then independent. When ordering fuel you had to know which tank trailers were available because they had partitions within the trailer. You had to match what you wanted in terms of regular, mid grade And premium. With what tanker was available. Quite a calculation. Sometimes you had to over order one to under order another later just to fill your underground tanks. And then, of course, there was a gamble on price fluctuations. Do you over order now because the price goes up or do you lose because the price goes down? The gas business is more complicated than many understand. Such fun. 😊
The first time I hauled hot oil for road construction I was forced through a red light due to the surge the load produced. It was an "enlightening" experience. I moved on to eventually haul double milk tankers in Upstate NY (NYS Thruway), not a lot of slowing and increasing speed as a rule but when cars did stupid stuff it was "entertaining", but more often dangerous. I don't miss driving anymore. I thought I would end up retiring from trucking but took a different path after 25 years. New position was a much easier job...
About 40 years ago I learned to drive a fire department tanker. Only 3,000 gallons, and it was full when we started out, so no real surge issues. Coming back with it half empty was quite a different story. Took a bit to learn how to manage all the corners, grades, and random stops in a rural mountainous fire district!
The term you want to use is surge, not sloshing.
That being said, this would have been a good training video to watch several years ago when I started hauling fuel tankers.
Same thing, but slosh is informal.
(I am sitting in line waiting for my turn to unload crude oil)
For casual viewers, sloshing is fine and easier to understand
@@maxlaihcexactly what I thought. It paints a clear picture in anyone's head.
One other consideration is cost of construction. A sphere has the lowest surface area to volume ratio, meaning it takes less material to construct for the volume it can hold. But putting a sphere on a truck doesn't work all that well because when you increase the length, you also increase the height. You can only go so high and still make it under the bridge. So the next best solution is a cylinder.
Former gas hauler in the United States here. Diesel weighs more than gasoline, so by volume I would typically only haul 7500-7600 gallons of ulsd. If I was pulling a load of straight gas in the summer, I would usually load about 8800-8900 gallons. In the winter when the fuel is colder, it is denser. It makes a negligible difference for 10-15 gallons in your car, but makes a big difference with thousands of gallons. I might only pull 8600 gallons in the winter. One other fun fact, in a fire it isn't the liquid gasoline that burns, but rather the gasoline vapors. That is why some fuel haulers say the most dangerous part of a trip isn't when they are loaded but actually when they have unloaded and have nothing but gaseous vapors in the tank.
Oh, and by volume, most fuel.tankers in North America can hold 9200-9400 gallons, but this would make them overweight in most states (except Michigan. Look up "Michigan fuel hauler" to see some massive trucks).
Unless you're like the guy in the video dropping unleaded. He doesn't have a vapor recovery.
Also diesel doesn't atomize so you're pretty safe with that.
Retired OBGYN here 'yupppppppppppppppp' always wondered why the tankers were shape like cylinders. Thank you for letting me know.
While the round shape does even out the pressure, the main reason for the round shape is that it reduces the surface area needed to enclose a volume and less surface area means less material, which allows more of the trailer weight to be payload.
cargo safety and avoid explosions is really important for tanks carrying chemical prodoucts
Lol as an ex milk man I know it’s called food grade stainless steel it’s a special stainless. But I haven’t ever heard of one with refrigeration built in to it they have 8 inches of foam around them then another layer of stainless around that gotta load the product under 40 and then it’s just a beat the time game. But I know for who I hauled for it could sit 2-3 days in the tanker and it still only be 40 degrees in 95 degree sun absolutely blew my mind how long you could keep that product cold for
I also know milk can’t have baffles only bulk heads they say you can’t wash a baffle right and it’ll cause build up of product on them
Milk is hauled from here in south PA to Miami.
They tell me it usually only gains 1 degree.
Insulation and thermal mass.
I've hauled fresh peanuts from Arkansas to the Norfolk area in a dry van.
They were cold when I closed the doors, and two days later when I opened them they were still noticeably cold. 48,000# of cold stuff doesn't warm up quick.
Makes a yeti seem like a paper cup lol
@@SoleEpiphanyI was about to say the original yeti cooler
@@tuckercole4191And the same goes for chemical trailers. Most of these trailers don't have baffles for the same reason. Missed areas that weren't cleaned properly due to the baffles could cause cross-contamination and the load could effectively be rejected by a consignee/customer.
In the us you need a tanker endorsement (N) for non hazmat for Hazmat you will get an (X) on your US CDL
H=Hazmat N=Tanker X= Tanker and Hazmat together. Plus if you have your hazmat endorsement you also automatically get TSA pre check on flights in the US.
Did AA for 9 years, cleared my sinuses every day.
Not every state does the x endorsement my New Hampshire CDL has it as two endorsement instead of one
@@johndurand6457
More money
@@xpunk77x Here in Canada all you need iss a driver's license for the class of vehicle you drive, but you need endorsement (not in the license, but a different ticket) for some industries.
I haul crude oil and produced water. All I need is my class 1 license. I used to haul Jet A1. For that I had to get my CFA (Canadian Fuel Assossiation) endorsement.
Nothing different in my license.
When youre talking about intertia youre actually talking about the free surfice effect. Fill the tank completely full and it will behave the same as a solid intertia wise. Its the slushing caused by there being free room to slush that is the problem. Casual navigator explains this a lot better, most likely because unlike trucks that will stay on land if they flip over, ships will sink if you fill the cargo holds worng.
I've been hauling milk for 15 years now. Our trailers don't have refrigation. They are stainless tanks insulated with a layer of Styrofoam. The large volume of milk is mainly what helps keep them cold. I've been told the trailers can sit in the parking lot on 100 degree day for 24 hours and only go up two degrees fahrenheit.
Liquid surge makes you drive different.
Thanks again for knowledge
As a man who took calculus 3 times and passed the 3rd time with an A. My explanation is that the efficiency for maximum volume of a shape to its surface area is the question to ask. A sphere is the maximum efficiency for volume using the least material next is pill shape where an axis is elongated. Then when considering the practicality of manufacturing and structural integrity, you get a tube that is somewhat "pill shaped" the most practical volume for material to contain the liquid.
It was my understanding that milk trailers were not refrigerated at all, because the volume of the liquid is adequate to maintain it's temperature for the short trips dairy products endure.
Haven't even properly gotten into the intro. Only a second in. But my guess is that because you are hauling liquids and liquids hold to the shape of the container, you might as well make something that is relatively aerodynamic.
That's a good point
@@ShannonDove-sy7ye after watching, it's mostly coincidental.
Been driving tankers for 14 years now, lately I’ve been driving manure trailers designed for quick loading unloading taking around 6 minutes to load and unload approximately 38.000 kg, these trailers typically only have one baffle since they are either empty or fully loaded 95-99% full, safety wise there are no issues as the trailers are equipped with automatic load capacity checks, meaning I press a button and wait once full everything shuts off and I just put the loading crane back in place. And I’m done. The only other safety issues can be cross contamination of animal illnesses so between every farm the truck has to be fully cleaned and decontaminated to insure animal health
Very informative! Thanks for sharing 😊
Thanks 👍
@@TruckTropia
Shouldn't you stay on topic and say "tanks" instead?😂
Very informative video, but I’m not sure if it was explained, but why do fuel tankers are elliptical in shape? And also I remember in Ecuador the fuel tankers have a loose chain touching the ground to avoid static electricity buildup that can cause an explosion, I think modern fuel tankers don’t have it correct? Can someone please clarify? Thanks
Most food grade tanks have no baffles the two worst food liquids I have hauled orange juice and molasses with molasses it moves slow you stop nice and gentle then on about 3 to 5 seconds it feels like ass ended you when you take of same deal. Except it feels like somebody threw an anchor out you can get used to it and get it smother
Haven't driven tankers but even cargo containers with bulk liquid in a bladder make sure you feel the difference hauling fluid takes. Even packaged fluid in large barrels has a noticibly affect on the handling and stopping/starting
Such creative videos you’ve on this channel. Just subscribed!
I never wondered that, but is 2am, so let’s go.
Seen, I drive them. 3:13 that guy is dropping regular gas without his vapor recovery hooked up. Illegal where I'm at.
Pressure was my first assumption. Round is the best shape for even distribution of force after all.
I'm 567lbs and struggle with mental illness. When I was a child I liked to play with trucks.
Great video, I love it, thanks ❤❤
Beginner's guess before watching: rounded walls are better at withstanding the shifting forces of sloshing liquids when stopping and going.
Fuel tanker here. I pull a B train, two trailers, carrying 50 000 liters of fuel, a little over 13 000 US gallons. It's well baffled, so the front to back surge isn't too bad, but one has to be careful. Taking corners has to be done very carefully. I corner like your grandmother driving to church.
I believe the proper term for the sloshing liquid phenomena is free surface effect, although strangely I've not heard it used outside of a maritime context.
Fuel haulers are not made from aluminium or stainless because of corrosion resistance. They are made from those materials to lessen the possibility of fire should the truck roll over. Stainless and aluminium do not normally spark when they hit the asphalt like carbon steel would.
Only the first minute of this video relates to the cylindrical shape of a tanker, plus it's the same reason a can of coke is a cylinder rather than a cube which would be far more efficient in regards to space. This gets taught in primary school.
Give the truckers a break. They deal with more than your computer.
If they were divided vertically down the middle of the tank, wouldnt this reduce the affects if sideways sloshing significantly
Many trailers today are not cylindrical but oval. at least here in Europe. Carries more volume for a given length.
Same in the USA -- most trailers hauling liquids are oval (elliptical cross-section). The main exception I see is propane haulers -- those are steel and always cylindrical.
@@SplashJohnstainless and fibreglass tanks are often round where aluminum tanks are oval or elliptica. Stainless and fibreglass tanks are smaller tanks the are manufactured long and slim to lower the centre of gravity.
Aluminums are build with the oval or elliptical shape and built longer and are slightly wider all to lower the centre of gravity.
Meanwhile in China, some hauling companies use the same containers for collecting septic waste/sewage and water/liquid food products without even cleaning them (not that it matters anyway lol).
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You need to get out more.
@@Vixtorzbot scammer
@@Vixtorznot u, the op
Okay video, but you didn't exactly explain why they are shaped like that. Misleading title, in my opinion.
Hoping to get into a tanker job soon, but it's hard finding one thats not manual.
baffles serve as breakwater inside the tank, same principle as the breakwaters do on Marinas, beaches and seaports.
I always thought tankers were either full or empty so there would be no sloshing.
I sometimes carry those pesky 5 gal water bottles for my water dispenser, 3 of them at a time in the trunk of my Subaru. Preventing them from rolling in the trunk is harder than you would think. If I am shopping for groceries in the same time, I can block them with my grocery bags, but I need to make sure that I don't crush the eggs or the milk bottles.😄
it sure why the heck this is recommended... but it's an interesting watch.
Simplest answer: because they aren't shaped like a cube
Probably cylindrical or oval so they can drain their contents more completely. Every liquid will flow to the very bottom of the tank.
Really? You guessed (incorrectly) before watching?
Many thanks
Spoiler: very little of this video addresses the title.
The commet section answered it for me.
Because real life isn't a Richard Scarry cartoon
5:34 what is this interior shot of ? Looks like a minvan, bro !
By colors, looks like some sort of Ford.
I always wanted to know what's inside cargo on trains. Where to they go?
Is there a significant difference vetween trailers that as cylindrical vs elliptical? Most of the fuel trailers I see at gas stations are elliptical.
Now I know why!
so wise , Thank You good to know
No discussion of vacuum trailers? Commonly used to transport haz waste and septic waste.
Goated algorithm
easy, because they were busy at the elongated cubes factory
Greetings. Can a flexible fuel tank ("accordion-shaped") to leave no air space and prevent the liquid being transported from moving around prevent these problems? Thanks.
You should change the name of the video since the vast majority of the video has nothing to do with the title.
There is two reasons they are cylinder shaped.
First the sphere is the strongest shape for internal forces, a cylinder is an elongated sphere keeping that strength in two of the three directions.
Secondly, a sphere holds the most volume per surface area, same logic.
You somehow missed half of the answers in a video asking the question while giving half a dozen things completely unrelated...
They arnt, at least not in europe. They are made to maximize the load lower to the ground.
The reason they use cylinders in usa is probobly because they use framless tankers and they are lighter. But in europe size co straints is more important than weight
I just did a quick search on google "europe tank trailer" and what I found is 95% of the trailers are built just like they are in the US. Why is it every time something trucking related shows up Europeans have to try to make it out like things are so much different or better than it is.
have anyone of you guys sees the semblance to the tank's construction being similar to the ones found on space rocket's fuel tanks?
I want one!
Milk trucks are also shaped like a cylinder. The kind that haul milk from the farm to the factory to be bottled.
In china, it's common to haul gasoline 1 day and cooking oil the next without cleaning the tankers.
Yum!
First time I was in China, I was wondering, how come every time I ate something that was deep fried I was ready to take out the world like Duke Nukem! Now, I know why! Honestly, though anytime I’m in China I’m very cautious what I eat! Not because of my weight, I don’t gain weight! However, gutter oil just something I can’t eat!
* "...Gasoline, water, milk, and *OTHER* chemicals."
I think I must have hauled the most strange cargo, in a tank. For fours winters, i had to go to horse farms, and pick up Pregnant Mare Urine or PMU, as we called it, from bulk tanks. And it had to be kept below 34 degrees F. It was processed in Albert Lea, MN.
How the hell do they get the pregnant horses to pee into tanks. I'm picturing horse pee jugs. And what do they use it for?
@@petergrhill what??¿?????
Perfume@@joecummings1260
Their worst enemy..
Gallium! (Gallium decimates aluminum and other metals)
6:40 what's Damageliquid?
Would love a video on placarding of tanker trucks.
I'd sure love to know if I come up to a tanker to see the placard and know what he's carrying. Do I pass and get him behind me or just stay where I am.
1267 is crude oil or produced water. It's been a long time, so I can't remember the number for Jet fuel.
Jet fuel is 1863 I believe
Google the number on the placard. It's not easy to find, Google needs to fix that. But if you Google it, eventually, after scrolling through a few pages of meaningless results, you will find the answer
I am going back to Euro Truck Simulator now to drive this
Here me out 1 weld is better than 4 less possible spots for leaks
Didn't watch but it's prolly because cylinders don't have any weaker and stronger points
Use metric units.
Drivers of small vehicles be sure to stay away from big trucks.
Can you imagine in China, the same container carries kerosene, then fruit juice, then cooking oil and etc... without even a flush in between?
"When a truck accelerates, brakes, or turns..."? Oops, that doesn't make sense, TT. Braking and turning ARE acceleration. What word or words do you think would better fit for that first item of the list?
Ah come on. By physics yes, but by common language, even dictionary definition, acceleration is a vehicle’s increase in speed.
@@jacobgreenbough5678 relative to what tho?
@@SlyNine he was right to refer to the truck accelerating or braking. By the dictionary those are two different things. The liquid inside, however, accelerates under both.
Why… not?
It's a stronger shape
I wonder how many mistakes had to be made before they realized this
Question, why don't they just fill it fully
@@stylinsandwich because it would be too heavy or is only partially full between multiple pick up's and drop off's
And it would act as a solid which would change all sorts of shit
Best job I've ever had was pulling a chemical smooth bore.
What is "melk"?
what about liquid nitrogen; can't forget about T1000
Damageliquid is danger
this video script sounds like it was written by chat gpt
1:25 they don't haul liquid only dry product
Fuel services at airports
Huh? Are you saying the tankers only haul dry product?
Just like gun silencers, you don't want it busting your ass while driving then brake
super
Chemical trailer don't have baffles
What is melk?
👍👍👍👍
I Always wondered how they kept the milk or “melk” from being contaminated.
Like Tsunami...
Trailers*
What other shape would you make them?
Square?
@@TruckTropia The only other shape I could think is either 3 big barrels next to each other or 3 sphere tanks next to each other.
@@TruckTropia4D hyper cube
Obviously a tesseract
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