Hello sir, i like u'r videos I m doing project on Atmospheric water genration device, by using vcc system but i don’t know how start n from where to start Plz give me any guidance or suggestions for start my project Plz suggest any good book for reff. Calculations
sir i have a question. what if i want to build my own mini electricity? through natural gas. since my place have own natural gas on underground. now i want to install heat exchanger on my genset. is it possible to do that? instead of using it's giant radiator. I'll just took it out then replace it with heat exchanger system? so could run it continuously everyday?
@@carlotheatheist don't mess with your generator.... mess with that, you can hurt someone working on the hydro lines in the event you manage to backfeed power into the hydro line when there's power present..... geez the idiocy of people these days.
may I say, I love your channel... i don't have a clue when it comes to engineering and machines but your videos explains them quite well and that I can easily understand it, not everything but just how it works... very informative
Please do different videos that explain hvac steam operation, pilot valves, spences, steam traps, drip leg, steam tree and how the process works. Also the condensate and condensate pumps.
I think the hot water inlet should be at the bottom of finned tube coil. Especially when we talk about cool air. Is that right? Anyway it is the best technical channel on YT. Great job.
Hey great video, very informative. Not sure if someone has already pointed this out but inlet has been spelt as “intlet” twice around 5:30. Also the once on bottom left corner of screen should be outlet right? Simple typing mistake I’m sure
There's a sugary smell coming out of our ac vents we just had the evaporator coil changed and the condenser. I read the smell is from a cracked heater exchange. My question is: Is the heater exchange located in the evaporator coil? The one we have is the cone shaped one (upside down letter V).
Is there a way to know if you have uploaded any video explianing the LMTD and other methods for/and heat exchanger efficiencies? Please let me know. thanks Paul for everything!
Thank you very much, good explanations. Sir i am a mushroom farmer. We are using paddy straw. Bleached paddy straws can not dry . which is the best method for drying bleached and cut pieces of paddystraw , we have conveyor roller system ?
Thanks a lot for this channel, can i ask when doing vrv selection on the software why using the evaporator oncoil temperature 24/17c. compare to 27/19 c. was giving me better performance of condenser coil?
Hey man, really interesting video! Thanks for sharing! I wonder if you have done or would do a video on the relative efficiency of each of these systems and also a video where you compare heat transfer fluids, like air, water and the different refrigerants. Also if you know about combined cycle electricity generation at low temperatures (home scale with refrigerants?) I would love to hear more about that too! I live off grid in Canada so I am always searching for ways to make my homestead more efficient and effective. If I could make electricity from my woodstove in winter, with refrigerants producing power and hot water (when my solar panels are not putting out much power) that would be amazing!
Hi Paul, your videos are great. Very helpful information. Could you consider slowing down a bit though? Also, any chance you can see about adding a quiz so engineers can earn PDH?
I don't know who this is supposed to be for. I am not a handy person. I found that it went too fast for me, although I did pick up some general concepts.
What if the fins get tilted due to some external force and the thin tubing becomes close to each other in the heat exchange system in outer unit of my split ac. Do I need to worry about this? Will it effect the cooling mechanism of my air conditioner? Please respond.
Yes it will reduce it's effectiveness. You should use a fin comb to brush through and straighten them. Do not attempt with any other hand tools. Stay clear of the pipe.
@@EngineeringMindset can i send you the picture. It's more complicated. Someone stood over the outdoor unit and thus the tubing bent slight downwards making a swing like shape and because of this the fins got tilted. I can not straighten them as there is no space left for them to get straight
Both. Just know that the absence of heat is what we perceive as "cold". When you open the door to your home on a hot summer day your not letting the cold out your actually letting the heat in..😂 chew on that for a while..lol
There is no electro-magnetic waves emitted out of Steam Radiators, which indeed heat by radiating. A better description of radiating is Object to Objects heat transfer.
Can any one Tell me at what temperature set point the outside air handler unit should be, I’m from Houston Texas, the summers are very humid And winter is not cold like up north.
@@Pasunreve212 I wouldn't say that . I mean it does push out air but the heat exchanger inside it can be heating or cooling or can have one of each . And the heat exchanger most often is just one of many in a system . The ahu has a method of preheating air coming from outside . One method is using the exhausting air and mixing it to create desired setpoint . A second method is a heat recovery that indirectly uses exhaust air to preheat incoming outside air .
send help my boss is having me learn hvac so i can fix the system here at work. he had the whole commercial system rewired to be controlled by a nest home thermostat. i need help. send help.
Preheat coils are often also called tempering coils . They are not the final heating source . Usually set around 65-60f . The final heat is added near the outlet to each space.
You are using the term convection in the wrong application. All of this is conduction. When the hot surface comes into physical contact with the colder air, there is energy transferred by conduction. When two items of physical matter meet with a temperature gradient, that is conduction. Convection requires physical movement of a fluid. But even with that physical movement, you can not have convection until you conduct the energy first. So all convective heating is just conduction through a fluid. But when that fluid moves, it heats up the fluid next to it, again by conduction. Fluid is matter, so when matter comes into conduct with other matter, that is conduction. To make this clearer, it is like saying that there are three types of energy sources: Fossil fuels, nuclear, and electric. One is not like the others. Convection does not transfer energy. Convection is what you can call conduction if at least one of the conduction surfaces is a fluid.
I don't recognize your use of the word "convection.". Convection involves the bulk transfer of heat driven by gravity, where temperature differences in a fluid (gas or liquid) correspond to density differences which under the influence of gravity lead to pressure gradients that drive convection currents. Hence hot air rising and cool air sinking, for example. When you drive air through a coil to transfer heat it is predominantly conduction. Maybe HVAC has its own use of the word. Or maybe I'm all wet.
They can be a preheat coil or a final heating coil depending on where they are located in a system . Just think of them as something that adds heat to air moving through a duct.
⚠️ *Found this video super useful?* Buy Paul a coffee to say thanks: ☕
PayPal: www.paypal.me/TheEngineerinMindset
Great video! Just one question: At 5:16, where it says "Exhaust Air Inlet (Warm)", should that be "Exhaust Air Outlet (Warm)"?
Hello sir, i like u'r videos
I m doing project on Atmospheric water genration device, by using vcc system but i don’t know how start n from where to start
Plz give me any guidance or suggestions for start my project
Plz suggest any good book for reff. Calculations
@@tech3431 dk4kt
sir i have a question. what if i want to build my own mini electricity? through natural gas. since my place have own natural gas on underground. now i want to install heat exchanger on my genset. is it possible to do that? instead of using it's giant radiator. I'll just took it out then replace it with heat exchanger system? so could run it continuously everyday?
@@carlotheatheist don't mess with your generator.... mess with that, you can hurt someone working on the hydro lines in the event you manage to backfeed power into the hydro line when there's power present..... geez the idiocy of people these days.
I don't skip ads, little way to thank Paul. Love you Paul !
I think he loves you too hun xx
Perfect. Been looking for a thorough explanation on HRV systems (ducted plate) for ages and this video nails it. Thankyou
A full description of heat exchangers without any judgment
What a great Chanell, recently started a building systems course and Paul has been a wealth of knowledge. Thank you so much!
may I say, I love your channel...
i don't have a clue when it comes to engineering and machines
but your videos explains them quite well and that I can easily understand it, not everything but just how it works...
very informative
Please do different videos that explain hvac steam operation, pilot valves, spences, steam traps, drip leg, steam tree and how the process works.
Also the condensate and condensate pumps.
I have agonised over trying to understand Air Heat Pumps - thanks a bunch. All now clear.
I wanted to figure out how my plate HX works, and this was a great video for that and others.
I think the hot water inlet should be at the bottom of finned tube coil. Especially when we talk about cool air. Is that right? Anyway it is the best technical channel on YT. Great job.
Man I wish this vid was made a lot sooner, Could have saved me a lot of research at the beginning of the year! lol
Same lol
Learn *PLATE HEAT EXCHANGER* here ➡️ th-cam.com/video/r67f4V6pOOw/w-d-xo.html
I learn many things about AC because of your videos.thanks😊
Great Explanation. Nice work !!
Hey great video, very informative. Not sure if someone has already pointed this out but inlet has been spelt as “intlet” twice around 5:30. Also the once on bottom left corner of screen should be outlet right? Simple typing mistake I’m sure
Your genius.. Thanks for the videos. Its a big help
thanks for putting the units in celsius! it's easier to understand this way.
Not for North Americans! :-)
There's a sugary smell coming out of our ac vents we just had the evaporator coil changed and the condenser. I read the smell is from a cracked heater exchange. My question is: Is the heater exchange located in the evaporator coil? The one we have is the cone shaped one (upside down letter V).
Super informative and covering everything. Good job
Appreciate if doing a video about temperature approach in heat exchanger.
Thanks
Is there a way to know if you have uploaded any video explianing the LMTD and other methods for/and heat exchanger efficiencies? Please let me know. thanks Paul for everything!
Ducted plate heat exchanger.. I need more detay.. overall very nice.. thanks
0:56 A) coaxial B) flat plate
C) micro-channel
A= tube and shell
B is microchanel
C is plate
Very good start .thanks
Thanks bro you nailed it
I like your videos explanation makes more easy to understand great 👍
Great video. I always enjoy watch your demonstration.
thanks sir this is a big help to me and want to learn Hvac system.
Best video yet! Thank you!
"Hach-Vack" love it bro 😂🙏 thank u for this
Love these videos, thanks
excelent explanation! Thanks for this content.
A very good video, thanks.
Outstanding information
receiver -condenser -plate chiller
Great video.. 👍
Snowmobiles have heat exchangers. When the snow kicks up in the tunnel above the track they keep the engine cool.
Shell & Tube type heat exchangers used to be used on a lot of steam locomotives in the USA......they were known as the "Elesco" feed water heater.
Amazing video!!!!! Thank you
What effect will it cause to the overall heat exchange functionality?
Which heat exchangers are used in Gas Furnaces ?
Brilliant !
Shell and tube, plate and radiator HX
Thank you for your awesome video.
really great !! thank you
Thanks!
Thank you
Sir...ur videos is awesome..
I Pyar mein bolo aapke Pyar Mein hi happy
Which is better sir falttube or round tube for micro heat exchangers
Flat tubes have better surface area, good for heat exchange but pressure loss of coolent is higher.
Thank you very much, good explanations. Sir i am a mushroom farmer. We are using paddy straw. Bleached paddy straws can not dry . which is the best method for drying bleached and cut pieces of paddystraw , we have conveyor roller system ?
What about secondary heat exchanger that right under the blower in a home.
13:50 - what is in the heat pipe?,a low pressure water mixture? or is coolant? i.e. something much colder than the cold water entering the device, no?
Great video! Can you make a gas furnace video?
¡Gracias!
Thank you
It's possible to use heat pipes for cooling car engines?
But where does the air going in come from? And the water flowing through the pipes do you put them there or they are bought like that?
The air is coming from a fan system. The pipes are already in there .
Thanks a lot for this channel, can i ask when doing vrv selection on the software why using the evaporator oncoil temperature 24/17c. compare to 27/19 c. was giving me better performance of condenser coil?
New VRF unit video here:➡️ th-cam.com/video/4i1XgcP1tmw/w-d-xo.html
Sir please explain gasket plate heat exchanger (indirect connection)what is use of this?
Check this video out th-cam.com/video/r67f4V6pOOw/w-d-xo.html
Should the left exhaust outlet in the ducted heat exchanger diagram be labeled as outlet?
Hey man, really interesting video! Thanks for sharing!
I wonder if you have done or would do a video on the relative efficiency of each of these systems and also a video where you compare heat transfer fluids, like air, water and the different refrigerants.
Also if you know about combined cycle electricity generation at low temperatures (home scale with refrigerants?) I would love to hear more about that too! I live off grid in Canada so I am always searching for ways to make my homestead more efficient and effective. If I could make electricity from my woodstove in winter, with refrigerants producing power and hot water (when my solar panels are not putting out much power) that would be amazing!
Seen our new video on HOW SOLAR PANELS WORK in detail th-cam.com/video/Yxt72aDjFgY/w-d-xo.html
Thanks
yes super great presentation keep it coming
A. Tube and bundle
B. Plate
C. Looked like a coil ?
B) Stacked Fin /Stacked Plate Heat Exchanger
C) Radiator/Condenser Coil Design
A) Idk
true or false? The initial heat transfer between an object and a fluid occurs through conduction.
Hi Paul, your videos are great. Very helpful information. Could you consider slowing down a bit though? Also, any chance you can see about adding a quiz so engineers can earn PDH?
set the playback speed to 0.75x
I don't know who this is supposed to be for. I am not a handy person. I found that it went too fast for me, although I did pick up some general concepts.
What if the fins get tilted due to some external force and the thin tubing becomes close to each other in the heat exchange system in outer unit of my split ac. Do I need to worry about this? Will it effect the cooling mechanism of my air conditioner? Please respond.
Yes it will reduce it's effectiveness. You should use a fin comb to brush through and straighten them. Do not attempt with any other hand tools. Stay clear of the pipe.
@@EngineeringMindset can i send you the picture. It's more complicated. Someone stood over the outdoor unit and thus the tubing bent slight downwards making a swing like shape and because of this the fins got tilted. I can not straighten them as there is no space left for them to get straight
Pleass, make a video with explanation of flooded evaps. Thnx
We did already, search evaporator on our channel videos :)
Well
I'm excited to see that my country of Denmark actually is well-known for something besides lego and insolin
Is a heat exchanger heating a cold thing or cooling a hot thing?
Heat always flows from hot to cold.
Both. Just know that the absence of heat is what we perceive as "cold". When you open the door to your home on a hot summer day your not letting the cold out your actually letting the heat in..😂 chew on that for a while..lol
There is no electro-magnetic waves emitted out of Steam Radiators, which indeed heat by radiating. A better description of radiating is Object to Objects heat transfer.
Yes
Finned tube coil are preheating coil?
Awesome
A. shell and tube B. ? C. Plate
good effort
Can any one Tell me at what temperature set point the outside air handler unit should be, I’m from Houston Texas, the summers are very humid
And winter is not cold like up north.
55 to 65 if capable . This means with no re heat there is cooling capability and you can easily add heat for heating
What's the name of the song & band
is AHU a type of heat exchanger as well? :)
No an ahu is generally a piece of equipment that has a heat exchanger but also has dampers for controlling outside air and fans moving air .
@@rodneyhickman825 thx for the explanation! Does that mean an AHU is kind of like a air conditioner that we use at home but with a larger scale?
@@Pasunreve212 I wouldn't say that . I mean it does push out air but the heat exchanger inside it can be heating or cooling or can have one of each . And the heat exchanger most often is just one of many in a system . The ahu has a method of preheating air coming from outside . One method is using the exhausting air and mixing it to create desired setpoint . A second method is a heat recovery that indirectly uses exhaust air to preheat incoming outside air .
No. I cannot name any of them. 😅😅😅
Isn’t and heat exchanger just another name For C -coil ? I need answer pleaseee
The radiator converts the temperature by radiation more than convection. It distributes the energy uniformly in the locals and chambers
The inlet on a Car radiator is feed through the bottom for convection.
send help my boss is having me learn hvac so i can fix the system here at work. he had the whole commercial system rewired to be controlled by a nest home thermostat. i need help. send help.
What is balancing valve
Sets water flow rate through a coil or system .
I skip but then again I'm not going to do that I know you make revenue I just realised. I'll not skip ads
I've been studying english for quite some time and I haven't never been capable to pronounce the word "water" properly.
I can’t find where there’s a part of how preheat coil works
Preheat coils are often also called tempering coils . They are not the final heating source . Usually set around 65-60f . The final heat is added near the outlet to each space.
15:43 Plate heat exchanger
universal epa holder:guess I missed this class
You are using the term convection in the wrong application. All of this is conduction. When the hot surface comes into physical contact with the colder air, there is energy transferred by conduction. When two items of physical matter meet with a temperature gradient, that is conduction.
Convection requires physical movement of a fluid. But even with that physical movement, you can not have convection until you conduct the energy first. So all convective heating is just conduction through a fluid. But when that fluid moves, it heats up the fluid next to it, again by conduction. Fluid is matter, so when matter comes into conduct with other matter, that is conduction.
To make this clearer, it is like saying that there are three types of energy sources: Fossil fuels, nuclear, and electric. One is not like the others. Convection does not transfer energy. Convection is what you can call conduction if at least one of the conduction surfaces is a fluid.
Thin hair
R134a
a. utube
b. plate?
c. radiator
radiation, convection, conduction.
En español por favor
I don't recognize your use of the word "convection.". Convection involves the bulk transfer of heat driven by gravity, where temperature differences in a fluid (gas or liquid) correspond to density differences which under the influence of gravity lead to pressure gradients that drive convection currents. Hence hot air rising and cool air sinking, for example. When you drive air through a coil to transfer heat it is predominantly conduction. Maybe HVAC has its own use of the word. Or maybe I'm all wet.
Agree, i believe there are several instances where the vid erroneously states convection instead of conduction.
hechvac
Phe
Bk
Thanks!
Thank you, Randy
Finned tube coil are preheating coil?
They can be a preheat coil or a final heating coil depending on where they are located in a system . Just think of them as something that adds heat to air moving through a duct.