No apology needed for Sandy not being available -- this was great! (Maybe just consider tacking on a snippet at the end of these with him saying "I'm Sandy Munro, and I endorse this message." ;)
Or would be funny with him popping up in the corner. Or make a stuffed Sandy munro doll (like an elf on a shelf) and randomly place him on things you talk about when he’s not there. Then you can sell Sandy dolls!! Haha. I can see Sandy eyes rolling!!
cut out and a little sandy doll i think would be cool and hilarious, just FOR THE LOVE OF GOD add a thought bubble that says " remember to tip those cashiers" or "hello boys and girls".
All you need to make us feel like Sandy was there is a button you can press & it says: 1. Ugh, too many fasteners (exasperated tone) 2. Hello boys and girls, keep tipping those cashiers 3. What is going on here... 4. I don't like it, too much stuff. Less stuff, more elegant. (or something to that effect) 5. That's actually nice, really nice (surprised tone) 6. This, this right here makes me happy! I think that sums it up. But seriously, This format works well. Each person playing to their strengths and explaining enough for the average person to be able to appreciate what's going on. Thank you
Preach sir! I love this channel, wayyyyyy better then anything on TV. Never knew I would be so into this stuff as a form of entertainment and learning. Just great to learn this stuff just to be able to form debate or have conversations.
I am not sure you made it clear for everybody why heat pumps are more efficient than resistors. Resistors convert electricity to heat at 100% efficiency. Heat pumps move a fluid and change its phase in different places (well detailed in the video). This change of phase (liquid/gas) allows heat to be moved from one place to another using Carnot's principles. Using the same quantity of electricity, you can move ~3 times more heat energy, making it about 300% efficient (compared to resistors that will convert electricity to heat, which requires energy conservation and limits efficiency to 100%).
Correct, but more simply, the plus 100% efficiency of heat pumps comes from "stealing" heat out of the ambient air. Any air that's above absolute zero has latent heat to be scavenged.
Thanks Cory, Ben, and team! Really insightful stuff. Engineering education is often overlooked, and having a channel that puts in the time and effort to explain things is extremely valuable. Hats off to you guys!
@@2hedz77 heat pumps are almost totally useless in warmer climates as they'd never be used, therefore, unnecessary weight. But you never knew where a car would end up, so you included it with every car anyway.
Ben, Cory, Sandy and all your behind the scene staff is top notch. You all are relatable people and that is what makes these videos so popular. The focus is on the technical overview and details like an engineer or mechanic, and not on being slick and doing a business school type verbose but hollow presentation. Thank you to Monroe and Associates for educating and informing us. I eagerly look forward to your videos.
I think you could have explained the difference in "efficiency" since some will be confused that a PTC heater is essentially 100% efficient, but a heat pump can have a greater than 100% "efficiency" because it is refrigerating the outside air, moving heat from cold air to the warm coolant. I.e the heat moved is greater than the work done by the compressor.
Good job, Cory & Ben! Only thing missing for me was a comment on relative efficiency of PTC vs Heat Pump. Heat pumps over their working range are 2x to 5x more efficient than PTC at putting heat where you need it. When it gets very cold and outside the range of the heat pump's design numbers then an external source of heat is needed. In a Tesla this is done by running the electric motors inefficiently causing them to heat up the liquid coolant flowing through them to supply the heat to the heat pump. TeslaBjorn's testing has show this is about 7kw of heating from the motors.
Funny comment. These are brand new not driven vehicles so they are clean plus there are a lot more folks around doing the work. I used to work doing all sorts of things at a Mercedes dealer back in the 1973-74 period. There were many days that my clothing never got soiled so, yup no real amounts of grease and fluids that are such a mess. Still even though they stay clean. Remember they are not working on an ICE engine which by its nature is a mess. Appreciate your perspective
Nice clear explanation. Good educational content! Ford has a *lot* of engineering headroom to reduce energy consumption, reduce weight, and improve range on the Mach-E. I hope they/re listening.
But ask yourself "why"? Why should they be "watching" and "listening" at this point? They had since 2012 to watch Tesla produce engineering advances and still their first effort, the Mach-E, is basically the same ICE product Ford has been producing for the 100 years but now they slapped a battery under the floorboard. That's just lazy.
@@dzerres please gtfo with all that negativity, there is always room for improvement and there is always a beginning to something. Bmw for example was a pioneer with big castings and they built one of the world's largest carbon fiber factory to make cars lighter.
Considering the extreme demand for that vehicle i’ll be surprised if they don’t. They’ve already cut into 10% of Tesla‘s sales average time on a dealer slot is 5 to 6 days!
Great explanations and “hand off’s” to each other. The camera person behind the scenes does a great job zooming in to a component when the authors are speaking about it.
I love the detail and explanation. I always like the compare and contrast aspect that you did in the latter part of this video. I did miss Sandy’s “disdain” when he thinks something could be improved. No one could or should copy Sandy. Excellent video! PS Question: Tesla iterates and changes and improves manufacturing without waiting for a “model year change.” They certainly did in the early days of the Model 3. A good video or episode for your upcoming Plaid road trip might be meeting people with newer Mach-Es and see if they are iterating if the car is manufactured a few months after the one you are tearing down. At least on the parts, you can see with a flashlight 🔦 Thanks again.
I have a Mach-e AWD Xr and I love it so far. 2500 miles. one 270 mile round trip from home and back with 14 miles still in tank. Charged to 235 with 16 amp charger over night. This in central Texas on a 90 degree day. Can’t see the stuff you guys are showing but it’s interesting. Thank you.
@@BigEightiesNewWave this was year ago. I haven’t brought gas for a year. I still have not charged at a DC charger. I’m 78yo and my 73 yo girl friend likes the Mach-e but she gets range anxiety. She needs her F250 pu to pull her grandkids horse trailer. Not a joke. So I do get to drive an ICE truck on occasions.
Correct the typical home heat pump starts loosing efficiency at about 40 degrees and stops working at about 25 degrees. So a home system will switch to the back up heat source somewhere in that range. Not sure about the temps that R1234yf will work at though.
Partially true from what I understand it decreases insufficiency as the temperature gets colder, At a certain point traditional resistive heating is needed.
The heat pump not being able to extract heat at lower temperatures is only because of the working fuels like r1234yf - which do not do so well at those lower temperatures. You could use different types of fluids to work at lower temperatures - but those fluids range wouldn't work well for higher temperatures anymore.
I have an idea for you guys. You guys should name a "Munro Associate" EV of the year in terms of what your team thinks the best EV out there 👍. Hopefully you guys can talk about the Mach E autonomous hardware like cameras and it's chip.
I like this "format." Clear and concise explanations presented in an orderly manner. Just add Sandy for some occasional insights and comments and it'll be great. As always, interesting and informative. Keep it coming.
The channel is getting more entertaining. More cast, more professionals giving insight and now cutscenes on who and how they take apart and handle the vehicle parts. Keep it up
I can never look at vehicles the same way, and that is fantastic. I love Sandy but it has been good to hear from some of the other team members. I should have studied engineering.
Best channel on YT by far. Professional content and presentation that is straight to the point, while also being informative and entertaining. You guys make my life as an EV enthusiast and investor much easier and better. Thanks again. My signed sticker is waiting for it's frame to hang on the wall
Very good show guys putting it into layman's terms. As a fridge tech I understand the benefits and something that I try to teach the new techs coming through. Thank you
@@NewCastleIndiana I hope you’re joking. This channel still uses iPhones for filming because they’re really great at it. No need for an expensive camera, if you can just use your phone.
@@holgergrauslund this channel has a video of Elon musk asking or noting surprise that this channel had an iPhone that takes video. It’s an ongoing joke. Not of my making. But it’s incredible.
@@NewCastleIndiana I saw the video with Musk, but I think I missed that part. So just to be clear, did Musk sarcastically ask if they had an iPhone that could take video? Like if he thought: ‘Really? An iPhone that can take video? Never heard of that /s’.
The heatpump when heating, basically an air conditioner in reverse, it cools on the condensing side so much it can freeze and fail. I've seen it happen in domestic heatpump systems. The gaseous phase can only extract a certain ammount of heat from the outer air when vaporising and you would need an electric heater to supplement it below 5ºC-10ºC, roughly.
I am in the midst of having to replace the consensor on my Mach-E due to a puncture. This really helped me understand the itemized estimate. (I had mud flap flipped up into it while doing 75MPH and it took out over the active cooling shutters and front-facing radar sensor too.)
The main reason for a heat pump is not to accommodate colder markets, it’s to boost efficiency. Heat pumps don’t tend to work very well in extreme cold. As temperatures drop the efficiency and ability of the heat pump to even make heat decreases.
Agree with the others! No need to apologies. It's great to see others and everyone over there seems to be super knowledgeable, so the content is great no matter what. Also, well done with improving the videos over time. The editing, audio, and just overall quality of the videos has improved and it shows.
This is great. Clear explanations of how things work, and motivations behind various aspects of system design. Also, great to see an expanding cast of characters!
miles ahead, just miles and miles ahead of the Competition, ...there really is no Second Place. M&A is just awesome to share this with us. I am just thrilled to be able to peek over Your shoulders and watch you do the Science that You do.
Interesting to learn how the cooling and heating systems work in the Mustang Mach-E. I'm not an engineer, but I can add some important observations as the owner of an MME in the south: That AC system cools down the inside on hot summer day real nice and quick, best AC in all the many cars I have owned. And in the winter, the heat is instantaneous and warm.
It's quite obvious from this video series that the Mustang Mach E will not be Ford's Taurus moment. Ford will need to move on to another chapter. Probably chapter 11.
I disagree: like any machine, the Mach-e has its good and bad points. However, having viewed all the videos regarding it, I believe the Mach-e is a product worthy of consideration. Two friends of mine own the car, and both of them are very pleased with it.
@@createdeccentricities6620 I'm glad you enjoy the car. But I doubt you and a few friends will keep ford afloat. Back in 2009 I really enjoyed my Blackberry Pearl. I love the tactile keyboard and it was very functional with good battery life and was familiar. There came a Time where the value proposition of owning another BlackBerry was not as good as owning an iPhone. The iPhone was not perfect but the technology, user experience, and interface was vastly Superior and that I could not ignore.
I'm crying, if you didn't want me to watch this all you had to do was say so. No need to turn off the Closed Captions so I can't understand it. If it was just an oversight then I would really appreciate it if you could turn on the Closed Captions so I can watch this video as well. Thank You.
The condensed gas is cooled to ambient in the condenser. When it’s evaporated into gas (in the evaporator) the temperature drops significantly. It’s this which gives the chilled air into the cabin. A home fridge-freezer works in the same way. Incidentally propane is cheap an excellent refrigerant and it has zero effect on the stratospheric ozone layer. Some might say it’s a fire risk but so is your gas lighter.
Great video. Very detailed and technical. One thing not mentioned is Tesla can run the motors slightly out of phase to generate heat for system as well. It counteracts some of the minimum temperature disadvantages in a heat pump design.
Great description and explanation. What would put it over the top, would be an illustration of the cycle with an initial walk-through, and references to it along the way. I could follow this, as I'm aware of how the tech works, but for anyone new to the subject, it would be even more helpful. I loved the layout of the parts on the table, that in itself WAS kind of an illustration, albeit you had to really pay attention to not get lost. Thanks for all the nice videos Munro and Associates are producing, I think I have watched (and hit LIKE!) every single one!
Good to see the work of the young interns acknowledged, when they give permission. The tech content is important but aspiring engineers and technicians worldwide need to imagine themselves directly involved in industry (or even at Munro & Associates 😉). Remember the Titans. Really appreciate what you do.
Waste Heat Engine (WHE) is a self-starting engine that operates in a low temperature range. This feature allows an engine to run on waste heat emanating from an external source, such as battery thermal system components.
I heard that the Tesla system also incorporates some resistors like the PTC does to get around heat pumps not working well in very cold environments due to heat exchange differentials with the outside. It would be great to hear to hear the high level overview of the Pros and Cons of heatpumps vs others. And it would be awesome to hear some mention of how Tesla could use their technology in a home HVAC system since Elon has said numerous times that he would love to do that, basically just "stacking them up". How well would just stacking up multiple units lilke in the car work in a home with central forced air?
All I would add is that you might have talked about the fact that the refrigeration cycle uses latent heat of vaporization, how that allows an air conditioner to move heat from a cooler environment to a warmer environment, AND how that makes heat pumps more efficient than resistive heaters. Also that a heat pump is really just an air conditioner that is cooling the outdoors. Still a great job and video.
Everyone is loving the teardown intros Idea: can you make a final review episode with all the intros and or teardown of the vehicle in one large video start to finish? Teardown time lapse to music
3:50 I don't think the expansion valve causes the refrigerant to turn back into a gas. The expansion value should turn the high pressure liquid into a colder low pressure liquid.
The expansion valve turns the high pressure liuquid into a LOW pressure liquid, then the heat/energy absorbed causeing the low pressure liquid to phase change to a low pressure vapor, then the low pressure vapor is returned to the compresser and turned into a HIGH pressure vapor, the condensor coil/heat exchanger removes the heat and it phase changes into a HIGH pressure liquid and that then goes back to the expansion valves, basic refrigeration cycle.
You forgot to mention that the Ford does not tolerate long down-hill roads - several Mach-E had to be towed away recently because of overheating on the road down to Geiranger fjord in Norway.
early model S would also overheat from regen while decelerating during high speed runs on the Autobahn. As the motor got to hot performance would be cut back, not disable the vehicle.
Interesting and worthwhile explanation and comparison, thank you. So.. can we now complete the circuit with an equivalent detailed analysis of the efficiency gains and principles behind the octavalve / heat pump system please? Great work.
