Model Y E13: Comparing Model 3 eAC to Model Y Heat Pump
ฝัง
- เผยแพร่เมื่อ 12 มิ.ย. 2024
- Episode 13: Sandy compares the Model 3 eAC compressor and NVH provisions to the isolated heat pump on the Model Y, while providing a quick summary of the functional intent of a heat pump and how that affects the cooling pack.
If you like the content you're seeing, please consider visiting our website and clicking "Support Munro!" or subscribing to our Patreon group for exclusive content.
PATREON GROUP: / munrolive
MUNRO MERCH: teespring.com/stores/munro-li...
SUPPORT MUNRO: munrolive.com/support-%2F-shop
MUNRO LIVE VIDEO CONTENT: munrolive.com/
MUNRO MAIN WEBSITE: leandesign.com/ - ยานยนต์และพาหนะ
The way this chanel works kind of reminds me of how many open source Software companies work:
There is a "community" open source version in the form of this chanel where you get the most essential stuff and there is the "enterprise" Version in the form of the full report that costs money and where you get all the "support" (in Software terms), can ask specific questions and so on.
I really like that concept.
Nice analogy! Thanks for tuning in!
Bravo. Best comment on youtube today.
Cash registers really are the unsung heroes of society, still working every hour and being shared by so many different cashiers
Cashiers don't get paid well in the US? I don't think cashiers in the Netherlands can even accept a tip ...
@@CarloRoosen often places like the supermarket and Mc Donalds they cant take a tip...
It's a strange country but there are also a lot of reasons for it.
I like how the great phrase at the end opf every video has evolved. It was first a good explination of how we should tip the cashiers at grocery stores because of how high their risk is of gettting COVID. Now its become: "tip your cash register"
Been looking forward to this part. This series is excellent -I know nothing about cars ..don’t even drive 😂
Just think that this model Y is the first rollout off the line. After Sandy’s feedback we will see improvements in the second line 100%
These videos are amazing !! wish they were a tab bit longer 🙋♂️🙋♂️
Great tear down guy, obviously not an HVAC tech. Dampers and actuators are optional too. Thanks for posting as always.
moremoremore thanks Munro and team!!
The moment we've been waiting for ....the heat pump.
I live in CO and Y is my first Tesla. On colder or hotterdays I haven’t noticed it or just don’t know any different to know that it is loud.
What he failed to say was that a heat pump is simply an air conditioner system, that when one pushes a button, cycles the refrigerant in the opposite direction, directing the produced heat to inside the cabin, instead of to the outside, as it does when in AC mode.
Radiator is enclosed, rather than exposed heat sink vanes I used to see. Sandy says they can close off (“shutter”) the assembly. So I guess when cooling is needed a blower forcefully passes air through the box enclosure. -you can’t always depend on the car moving to provide velocity for ram air. ?
Thanks for the question Steven. The radiator operates in a very similar fashion to most other vehicles as there is a fan on the back side that forces air pass the radiator if needed. Due to the angled setup, the plastic enclosure is necessary to create a path for the outside air to come in from the lower grill opening on the front bumper. The shutters that open and close are located at this location. The active grille shutters are becoming more common place for vehicles these days. They reduce drag on vehicle if no ram air is needed during normal driving.
Great videos ! looking forward to seeing that octovalve, and your opinion about it!
We'll definitely be doing a video centered around that. Thanks for tuning in!
Me too! Octovalve & Superbottle!!
Feels like something out of biomedical engineering, what is a heart but an octovalve, this is like a cooling circulatory system.
@@shankhadeepshome3982 That's a good way to describe it. The Superbottle was the heart of the Model 3, much in that same way that we anticipate the Octovalve will be for the Model Y. More content on that to come!
Thanks once again for another phenomenal video, Sandy.
Thank you. Super nice NVH cover for the compressor. Wish my S had one like that. I’ll look into it now.
oh, so simple to have a shutter in the radiator and at the same type it's so great ) thanks, Sandy!
You have it backward. The yellow cap on the thin pipe is the high pressure side. The fat pipe is the low pressure side (with the smaller ridge cap without hex top). Thin side is high/hot.
Keep it coming! Would love multiple videos a day!
This is very interesting Mr Munro, thank you for doing this!
Love following these videos! I read that 10 minutes minimum format helps you in TH-cam algorithms. Maybe extend each video to at least 10 minutes...
Commenting to say I appreciate these videos!
Thank you for putting the episode number in the title.
Thank you mister munro for the information
love it !
thank's Mr' munro
Is it really written "shutter ass" on the radiator 😂
"MY Active Grille Shutter Ass" to be exact. Ass being short for assembly. Active Grille Shutters are being used more and more throughout the industry as a way of balancing air flow into the radiators for optimum vehicle performance as well as aerodynamics for improved fuel economy.
I use "asm" for assembly abbreviation. Surprised they didn't.
@@eeblatter Either that or 'assy'. Never heard of 'ass'. Must be a joke.
Nicolas Musset shutter assembly. Assembly is shortened to “ass” on products
Elon need more meme inside the car.
Manny thanks sir for the explanations!!
Almost like sesame Street program
"And today we are learning about heat pump..."
Great videos and tutorial Mr Munro. I'm learning everyday what goes into making a car or should I say, do's and don'ts. Well ok making an EV.
Thanks from Portugal.
Thank you Sandy.
I have an i3s with a heat pump and it is definitely noisy, but I don't hear from in the car while driving. From the outside of the car when parked and pre-heating the cabin it sounds like a small engine running tho, i'm waiting for someone to tell me i left my engine running when i leave it heating in a store parking lot :D
Another informative video!
Sandy, can you check, whether this particular Model Y still has an additional resistive (PTC) heater? Because this way, Model Y would also be able to generate heat much more quickly. It would then be up to a controller to decide, whether to use the resistive heater and/or heat pump at each point in time.
This is Munro.. that's what they do! lol.. they're gonna tear every inch of this thing apart... we'll know in time
Great analysis!
people complaining that the heat pump is loud might have never owned a EV. with the Y being their first. Since the rest of the car doesn't really make any noise, anything that does make noise might be "amplified". Just my guess
Luxury ICE cars have gotten great at reducing noise from all sources. You often will not even hear an engine at highway speeds.
Yes- some people complain about the noise of the Model 3 A/C, but only because the rest of the car is so quiet. You don’t hear it from inside- in any event, it helps warn pedestrians!
Great video. However i was hoping you should compare the sound from the 3 and Y. Thanks for showing the difference in components. Looking forward to sound comparisons later 😉
I hope you guys are able to put it back together and better and have a nice Model Y for your fleet.
Mr. Munro thanks for the video series! Do you know if any of those improvements made it over to the 2020 Model 3 yet? Some of them would make sense to keep the costs down, right?
Excellent video content. Well educated and valuable observation! Thanks for sharing this great knowledge
Great video thanks!
My new happy place... 😯 geeked out
5:00 "Tip your cash register" 😂😂
Mr Monroe,
The pressure on the cooling system on any Tesla is 1 to 2 PSI.
The pressure in the Ford Mach E is 21 PSI. Kinda makes you wonder who’s stuck in the Stone Age don’t it.
The Tesla’s lower pressure means fewer coolant leaks plus the are fewer coolant lines versus the Ford Mach E which you so elegantly showed us on your initial inspection after pulling the frunk out of the car.
Food for thought
These reports are fascinating. Thank you, Mr Munro! It may not be practical for him to do it on TH-cam, but wouldn’t it be interesting to watch his tear down of competing EV’s?
I'll take a long range RWD Model 3 with a heat pump, please.
Engi_Nerd , my preference too. They just announced 404 mile version today (China model). I’m assuming a big battery.
@@shepherdsknoll8 It may be the same battery, just with a different rated mileage due to testing differences.
@@JesseSightler Yeah you are right. In China, 404 mile version is WLTP and 322 mile in USA is EPA. WLTP is less accurate than EPA .
@BeAn BeAn No elevation? Nah, going down hill for sure XD.
Exactly this. RWD is already fast enough. I had a Nissan 350z Sportscar that went to 100 in just under 6 seconds. And that was already fast. The RWD Model 3 is also under 6 seconds, and with the heatpump and big battery. I wonder how fat it could go....
If Sandy thinks it’s a good idea then probably it’s a good idea. He’s finding lots of things about this model Y that I like over the model three. Looks like he’s selling me on a model Y.
I said it is a good idea before Model X was invented. Nobody believed me. Should change my name to Sandy.
@@tarassu Depends on what your idea of "good idea" is. Obviously it has some advantages and it has some(quite a few) disadvantages - it is heavy, it can break, it is cost effective and it doesn't heat the cabin as fast as a PTC element. So in that regard it is not a good idea.
If you live in a climate with below -10/15C - also not a good idea as it will not bring any benefits. It also adds complexity to the system. So if we combine all of this - for the small benefit in some conditions (actually you can achieve near heat pump consumption with proper heating and utilizing the seat heaters) you add a lot of weight/cost/complexity. And if we take the Model 3, the production hell that they had, then adding all of those is definitely not a good idea. Now, they had the time to work on it, add it to the system, which in my opinion "is a good idea" at the current point. It will not bring a ton of difference and only time will tell whether these things will require more maintenance and cost.
@@teslakiller6959 They didn`t want to implement HP for exact reasons you mentioned. Also, they needed to make money form model 3 so...
But, this is supposedly state of the art HP with many solutions that simplify it... So, will be interesting to see what they made...
@@DG-uv3zw I think this being the first iteration it will have its issues. I think Tesla added it just because people were bitchin about it in reviews and forums - not because Tesla really wanted. Most people in Europe do short trips and put the car on auto with AC which in the winter is stupid - this kills the range. They don't know how the system in an EV works, they are used to the old fossils. If you utilize the heaed seats plus a little pre-heating, not much, you can achieve great results even in a Model 3.
I think with a little better software on the heater/AC Tesla could've lowered the consumption enough, that a heat pump is not needed. It will be beneficial in some situations, but it is a bit loud and it might add more complexity. We will have to wait and see.
@@teslakiller6959 air contionning is a one way heat pump which can only cool. so they had the heat pump on all model before. They just added some valves so it can be used un reverse to heat the car as well. So they added more efficient heating without much added cost.
Is there an extra evaporator on the outside for heat pump mode?, or is the radiator also used in the winter to absorb the heat of the ambient via the coolant?
Thanks a lot for the interesting video!!
So Model 3 had separate radiator for Air conditioner condenser hence no heat pump while here its being shunted through two BAHX to either act as air conditioner or heat pump. Furthermore, can you please analyse if fluid path design allows dual functionality, like heating the car while cooling the battery pack at same time?
Well conveniently the battery pack wants to be roughly room temperature. So the difference between the cabin and the pack shouldn't be that great. Which means that if you want both of them to be at a specific temperature, just have the HVAC system produce a temperature that is opposite room temperature from the external temperature. Then throttle how much of the HVAC output to pipe into each circuit. I don't know if that's how it works on the M3, but I can't imagine it working any other way. Would love to know for sure.
Sandy, What refrigerant are they using? Residential HPs today use 410A. Most automotive A/C units use 134A. 410A is much higher operating pressure at high temperatures but can extract heat from much colder ambient (outdoor) temperatures.
Hi I have the same question.
I'd be surprised if it were not R-134a
@@lylestavast7652, so would I. But 134A would be running negative pressures in ambient temperatures below 0 degrees F. Maybe they just turn the compressor off and run resistance heaters at extreme cold temperatures.
The Model 3 used R-134a and it was clearly stated on a label in the engine bay. We were not able to find a similar label on the Model Y but documentation we have calls out R-134a as the refrigerant used on the Model Y as well. Thanks for tuning in!
@@MunroLive Thanks for the response. Your answer is what I expected.
I find myself looking each morning for your next episode. So much good, reliable, and honest information. Will you be doing tear downs of other machines on a continuing basis?
Would pay a monthly fee to see more.
I love that your spending time and effort to be part of the solution.
To help Tesla improve the quality and value of their product.
Thereby helping the world move to electric vehicles.
Thanks
Model 3 no longer has that cover on the compressor, was deleted a while back
Good to know, thanks for the update and thanks for tuning in!
Yes model 3 compressor is noisy, but normal according to Tesla. It surprised me how noisy it was when I first had the car in my garage
Any idea when?
@@usamericans6045 early-mid last year roughly
When did that happen, roughly?
That does look like a scroll compressor, I was hoping they had that technology. I suspect the CT will have a bigger one for the air suspension and for compressed air power tools. A bigger scroll compressor will be useful for home HVAC. Below about 10kw scrolls are more efficient? This is looking like a very good design. A few quality issues and some plastic clips used where metal would be better? Those inverters drivers are the real technology. Controlling multiple SiC fets is not easy. I would love to know what generation of SiC they are and what drivers and controller chip they use.
Had another look at both compressors, I'm not sure if they are single stage. Combo axial piston and scroll. Vibration equals noise, a pure scroll would be quieter? More questions than answers so far. This it great stuff.
Killing them softly. You the best Sandy
One of the lines leading out of the heat pump seems to be crimped pretty bad as it was bent 90 degrees up. I would like to know your opinion on this. Seems like a lot of restriction of flow.
Cost is always a consideration, but the noise dampening cover would have been a nice addition.
My concern with heat pumps is related to the heating capacity it Arctic environments. As far as I'm aware, heat pumps start to loose their efficiency below -10°F. Did they do something to improve cold weather performance or am I hosed when it gets chilly out?
Hello! I’m curious if you know approximately how much power the A/C uses on a Model 3 at Low temp/High fan speed? Thank you for the video :)
Thanks again for this nice episode . If there as no corona i would fly over ;-)
Imagine hot summer and cold winter.
Can the cover on the compressor save energy from the battery ?
Can it be helpful to speed up the function of the compressor ?
I can't wait for Sandy to really dig into the Octavalve and heat pump. Since Sandy didn't read anything and want to discover for himself, it'll look mysterious and he'll have to investigate.
Definitely more content on both to come! Thanks for tuning in!
Does the heat pump system utilize HFCs as the refrigerant?, or something with a lower global warming potential (GWP) & less harmful such as HC or R290?
Great content as usual! Keep it coming 😁
With the heat pump now included, is there a PTC air cabin and/or PTC battery coolant heater also included? As a backup assuming the r1234yf based heat pump's COP may drop below < 1 at temperatures below < -15degC ? Or they were able to just use the heat pump for all cooling/heating needs with no backup PTC heater at all? Also assuming they somehow included the whole waste heat recovery method from the Powertrain to heat the battery from the Model 3 to the Model Y with the Heat pump based system?
As far as I know model y doesn't has restive heaters. But the heat pump has an internal loop to extend the usable temperature range.
I know that the Model 3 uses its motors to heat up the battery. Tesla Bjorn did some really nice tests to show how it works. It basically wastes electricity in the motors to generate heat to warm up the battery.
And the other things, i guess we will find that out in future episodes.
By sending an impure wave into the motors, they become less efficient, and produce heat. Up to 4kW per motor.
I assume the Y can use this on the cold side of the heat pump to heat the cabin when it's to cold outside.
Cop cant fall below 1
@@karlreisa3872 when you heat with a heatpump, you come to a point where it delivers heat, the power of the pump is not sufficient.
Try driving highway speed at -40° ..
Good stuff.
At first, thanks a lot team Munro to share all of this. Great stuff, highly interesting. One question: The M3 A/C compressor is replaced by MY heat pump, which now does both things: cooling and heating? Was not entirely clear, but may goe without saying.
That is correct. The Model Y's heat pump replaces the AC compressor in the Model 3 and can be used to achieve both heating and cooling.
@@MunroLive really appreciate the quick response. All the best to the team, don't get bogged down by the bloody virus.
Super stuff :)
wonder when Tesla will implement a foam blanket for the heat pump, and when the heat pump will be on the model 3?
Sandy, you said there is just one radiator in the car, but I could see a couple electric fans in the nose of the car (just visible in the corner of the video frame). Aren't those fans pulling air through a radiator?
You make really nice videos!
Can you also tear down a headlight? Would be really interested in this, as we have two spare headlights and would love to know more about the LED Voltage and protocols so we can use them for other things (but we don't to disassemble them though). That would be so nice1
Only question is, can the octovalve pump heat from the cabin into the battery when its cold but really sunny and toasty inside the car. THAT imo would be next level. The cabin is pretty much a greenhouse that traps tons of heat, especially when you have black seats. You can probably use the chemical battery doubled up as a thermal mass at that point and reverse the process of heating/cooling based on weather changes. Or even waste heat from supercharging can go straight into the cabin when its balls frozen outside. Wowzers
I almost died yesterday with just one video...
Same here
It's not healthy to over obsessed about a disassembly of a car. Try meditation.
From covid?
I'm curious if there is an easy way to get out leaves that get sucked into the radiator vent? I couldn't find a way to do this on my Model 3.
Tesla Tips by MTN Ranger It’s pretty easy. Take the frunk tub out and then unclip the top of the plastic shroud and flex it up- you can pretty easy get to the leaves and insects. I do it every 12 months or so.
FutureSystem738 Thx, I’ll have to try that out!
FutureSystem738 Thx, I’ll have to try that out!
Removing the Frunk Tub is very easy.. You just need a 10 mm wrench to remove the 7 bolts keeping it in place.
Thank you Sandy for taking time to explain the basics of how these systems work before you talk about Tesla’s optimizations. It really helps us non-technical laypeople understand what’s going on.
A heat pump is great as I have one on my home. But same as for my home it does not heat enough when really cold, so is there supplementary electrical heating?
Yes. Like the Model 3, the Y can run it’s motor in an inefficient manner to produce heat. Sorry I’m late.
Do you guys think this heat pump can be retrofitted onto the model 3? From what I understand, the heat pump is much more efficient than what the model 3 has. Would love to retrofit this in there if it's relatively easy to do
I don't think a retrofit would be possible. you'd likely need to transplant entire model Y's cooling system (octobottle) and software.. This is best left to oem.. Assuming this adds %15 cold weather range, I'd pursue more practical options like making sure you have the most efficient winter rims first
Can someone explain me why they keep around a 12V battery instead of tapping the 350V one with a downconverter? Regulations?
I've had the 12V needing a jump in my Prius when a kid left the rear dome light on. My same reaction - why is the battery that can power a car not available to get me started?
@@bradstewart7007 This doesn't really apply to Tesla though. The battery dies you need a charge for the main battery, 12V battery or not.
Its needed to open the contactor to access high currents from the main battery.
chargedevs.com/features/a-closer-look-at-contactors/
@@waynerussell6401 okay that makes sense, thanks. Still wonder if you couldn't just do a downconverter to a contactor that disconnects everything except itself. It's probably a little safer but seems like it would be fine and you could ditch that unattractive lead acid battery.
A very efficient simple system.
The A/C unit could use slightly stiffer materials, so it doesn't move around as much on the mount or mounts.
As this causes long term failure of other components attached to the pump.
Otherwise a pretty good set up.
Another great analysis, Sandy. Any chance we could get a quick video with your overall impressions of the Y so far?
Sandy you are a legend, thanks for the content. Do you think enclosing the heat pump in something to reduce noise can be done at this point, or can changes like that usually not be made this late in production?
There was really little comparison as your title implies and the explanation as to how the heat pump works could use some depth, maybe a diagram. Interesting to know about the isolation approaches.
Waiting for Christmas present.. Video.
The looking inside of the computer and battery.
Will never need heat. Is it noisy when cooling?
4:42 MY Active Grille Shutter ASS
LOL
Will updated M3 get heat pump and when?
I truly wish Ford could have put a heat pump in the mock e. That would have sealed the deal for me
I think he has. For that are the pipes all about. I'm not sure if it's used also for heating and only for cooling. But you only have change the hot side and the cold side in order to get an heat pump for heating and cooling
so inside the engine bay on the model Y is brown with body color oversparay on it?
The brown color you are referring to is the undercoating that is applied to the entire BIW for rust and corrosion-protection. The A-surface paint (red in this case) is for the final aesthetic appearance. Basically all automotive OEM's use some sort of undercoating on their body and it up to the OEM how much of the final body color they spray everywhere else. Reducing the amount of final vehicle that is fully pain
ted saves time and cost. You'll see that "brown" look in a lot of places that are not highly visible, especially in the interior behind trim panels. Thanks for tuning in!
@@MunroLive BIW= body in white
are there any reasons at all why that insulating cover has been ditched - costs like a penny and made in-house - if it sounds tinny when you strive to make the rest of the car sound woody
Thanks! HP payback in moderately cold, frequent long distance driving. I'd rather have bigger battery, so benefit is all year round. I live in Calif and drive
This is America manifesting it’s own destiny and changing the outlook the world looked at it with.
I am a huge fan of this sort of efficient engineering, and this arrangement is clearly very elegant and incredibly optimised. But with fewer pumps etc., the ones that are there must be doing more work. And obviously a single failure in this system could well cause the car to shut down if it can't cool the battery. Could this consolidation of systems cause a possible reduction in reliability?
15Bit if the “wrong” pump failed in a different vehicle, the vehicle would fail too.
The whole car would be very unlikely to shut down. Performance/power would be software limited.
They got rid of this cover probably to prevent overheating.
or cost cutting
@@sycipcroll I say both. :) The Model Y looks really well engineered from a cost saving perspective.
The NVH cover on model 3 compressor was ditched over a year ago. Not many have them. Model Y compressor is obviously more powerful.
I don't like how it's mounted. Mounts are soft allowing it to move and make noise by contacting bracket. But, with firmer mounts, the torque of the compressor made it so you can feel in the steering wheel when it switches on and off. This is an important issue. I'm interested to see solutions.
Do you really think Tesla would design an isolation mount for the heatpump that would allow it to contact any other component or frame in the car? These are pretty smart engineers, if you haven't figure that out already...
@@stevebothe1416I know the engineers are smart, I have much respect for them. I'm a tech at the factory dude. Been working on Y since pre-production. I don't "think" the compressor contacts, I know it does. We've been working on this issue. Interested in Sandy's approach to solving it, or if it even really needs solving since it only occurs when someone hits very hard bumps/pot holes.
@@chstra45 Fair enough... In that case, I'm guessing it would not be an issue under normal driving conditions, but could potentially contact the frame if the car was to hit a large bump or pothole... Is that your take too?
@@stevebothe1416 Yes. I takes effort to cause it to hit. Normal driving, even most of the bumps you encounter on bad roads (which are most roads in this country) will not cause this to happen. When we assess vehicles we try to look at worst case, then work back to determine the severity. It doesn't cause any issues with compressor, but if you heard it you would think something is loose in suspension. Like I mentioned, stiffer mounting bushings created a worse problem. There's video here of people bouncing the brand new Y on dirt roads and it didn't come up. It's a fringe issue that few if any will notice, but one I'm curious about.
@@chstra45 Sounds good... It's just about hitting the sweet spot in the design I guess. I too, am now curious about Sandy's comments...
Sandy Munro. TH-cam Throat Clearing Champion 2020 xD
I haven’t heard anyone say it’s too noisy
You couldn't hear them because of the noise.
@Anthony I can tell you from experience. You are going to enjoy music ALOT better in an electric car. I am not rich enough like @Jason Granovsky (yeah you filty rich animal) but i got a second hand Opel Ampera(chevy volt rebrand) and i really really enjoy the music. Especially with DAB+ radio(digital radio) and my own music on it. Great quality sound system with the abscence of car noise is SUPERB. If you are a music lover, you will really love electric cars.
What do you do for a living to be able to afford a Tesla ?
So there is only 1 radiator with coolant then uses coolant/refrigerant heat exchanger?
Yes At 2:40 its a coolant/refrigerant heat exchanger.
@@niconico3907 Cool, i'm no refrigeration engineer but i would assume this would allow better control, so heat can be taken from motors, inverter,battery and radiator. This would also work in much lower temperatures than a air to refrigerant condenser.
Could you please do a video on whether the Y is physically capable of towing Yes/No and how much?
Now you know has done a video on this. Short answer is atm it's not setup for it in north america (like to tow large heavy trailers), but probably will in Europe (like to tow small light trailers).
A problem is the max payload of the Y is just 402 kg. Adding a towbar hitch and the tongue weight will cut into that.
@@foersom5928 That's so disappointing. Was really hoping this vehicle would preform similar for example to a Cherokee (~3500LB Tow)
@@eganjos1 If you want to tow the current options are Tesla X payload 525 kg, tow 2250 kg; or Audi E-Tron Quattro payload 640 kg, tow 1800 kg
@@eganjos1 Tesla has now tow option 1588 kg for model Y. That is much more than I expected, model 3 has 910 kg in EU. Tow bar ~23 kg, with max tow 1588 kg that is at least tongue weight 159 kg. So payload is reduced to ~220 kg.
think you need to double check how an hvac works. the gas does not chose were to goXD
the cooling circuit turns when you switch from heat to cold.
it always goes in to the car and the "condenser"
What type of refrigerant they are using ?
The Model 3 used R-134a and it was clearly stated on a label in the engine bay. We were not able to find a similar label on the Model Y but documentation we have calls out R-134a as the refrigerant used on the Model Y as well. Thanks for tuning in!
It’s surprising because most new car uses 1234 YF ?
Dose anyone know about amount of refrgirant in model y.
What happened to, "Hello, boys and girls"?
It felt like class was now in session with Dr. Proton. Sad.
Good idea to ask if people can accept a tip or not and do so in cash. At many jobs, you can actually be written up or even let go for a cash overage.
Here in Canada heat pumps aren't really a thing with homes do to winters reaching - 40C. Would this not produce heat in those temperatures?
At that temperature? No. I think modern heat pumps will work down to maybe -5, however the COP (Coefficient of performance) will get really bad. Once it drops down to 1, then the heat pump has no point as it cannot draw any thermal energy from the frigid air, and you might as well fall back to plain electrical resistive heating. [EDIT] Actually, I checked and they can go lower, maybe down to -25 to -30, but the performance will be very poor.
From the standpoint of physics, moving heat around with a pump, coolant and heat exchangers can be made to work at any temperature you might find on Earth, but 'one design does not fit all.'
I think we'll just have to wait and see if the Model Y loses efficiency at those temperatures. Too late for this year, but next winter somebody or other will probably have a go at running a Model Y in your neck of the woods.
Maybe an over kill but having the option between the two , or using them in conjunction would be great
I think the bigger reason for no heat pumps is simply the low (relative) cost of natural gas (and good distribution)
@Anthony I've heard it been called -40FC for F***ING Cold!