How Does a Heat Pump Work?
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- Опубликовано: 6 июн 2012
- Rexpert, the Heat Pump Expert, of Chaffee Air explains the basic operation of a split system air-source heat pump. These same principles are applied to all air conditioning and refrigeration systems. The video is intended for educational purposes and may be used, unedited, as such. We appreciate all tasteful and relevant comments, however, this is not a DIY video and questions about maintenance and repair are therefore not answered. Thank you!
Video by RDG. 
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As someone who can self teach, I still appreciate well-constructed videos like this one that get to the point and do a good job of succinctly communicating the information that's needed. Sometimes I find textbooks to be a bit of a vicious assault on my attention span, so it was nice to get a little visual confirmation.
Thank you Graham! The video producer went to school for the subject and has worked in the field for years, also. He (me) happens to be simple-minded and knows how to simplify technically complicated material. I explained to my six year old, just last night, how electricity works and is measured. She then explained it to my wife this morning... surprisingly accurate. :)
I should have watched this video yesterday when my brain was a pile of mush after reading about its operation in a book. I figured it out tho, and this video is completely accurate. Amazing how in only a few minutes so much is taught with the help of an actual animated drawing!
Dear bodybuildingking could you pleaase suggest me which book you have read ! It would very greatfull from your side !
Wow, I had no idea it was that complicated or that the heatpump was part of the heating process in the winter! Thanks for the info!
I just learned about Heat Pumps today, and walked out of class scratching my head and thinking, "WTF are these guys talking about". Got on youtube and this vid clearly explained it in 4 minutes..
peanie wilpnips same I’m a visual learner
The Summer mode switch to defrost was very cool.Thanks a ton for that explanation
plain, simple, to the point and well diagrammed ...thanks
Very very good and articulated video on heat pumps
This Person is teaching very good when I went to school for HVAC I have a Teacher like this man . I was working on Industry , because my Teacher was like this men , very good explanation .
Perfect illustration and explanation, 100% spot on.
Thank you for this video, I am up in WI and looking at houses more south and didn't know what the crap this was that kept being mentioned in the house ads! lol
+Isabelle Farleigh The first time I saw the emergency heat mode on the thermostat of a heat pump I thought it meant if the electric went out there would be heat for a certain length of time. Actually it activates the heat strips to work full time like an electric furnace. Go figure.
This has helped me understand a heat pump SO much more!
Great explanation. I love the animated diagram, too.
Great animated video that helps explain the process. The biggest issue the seems to hinder the understanding the process of refrigeration is that people cant visualize it. This video does a great job.
I understood heat pump process. Thank a lot.
I like this video. Heat Pumps are very popular in Tacoma Wa. I can see how this may help people understand just how a heat pump works.
Thanks for a very clear explanation. I now have a much better understanding of what my mini-split is up to.
wow the best explanation I ever seen.. amazing!
Great video man can't wait for another one
Great training video!
It was really great source for my HVAC project. Thank you, who prepared this video, a lot.
Thank you, Enes. I apologize for missing this comment initially.
That's a great explanation. Thanks so much!
finally, good and clear explanation. now I understand my LG THERMA V system! Thank you.
Great video! Thanks for the tips!
i agree with the previous comments.... awesome clear explanation.Thank you.
good name lol
watching this program I have got an idea about the heat pump function thanks for valuable information.
I went with a 3.5 ton unit after our old central air went down & temporally using a 10k window unit which only cooled one room efficiently to cooling the whole house for 20.00 dollars less a month than the 10 k window unit . I can't comment on heat at this point yet . Absolutely love it so far & found this video just wondering why I found my condenser fan not running for a bit this morning our first cold morning with the unit , & it answered my question as well . Thanks
Love this presentation. Needed this information for a product we have to decrease the amount of energy a heat pump (also AC and refrigeration) uses by over 70%.
Great video man! Very informative.
Great and clear information , thank you.
Wow that was so simple thanks man
Thank you for the video Now I understand Best wishes
Best one Ive seen so far!
very very useful, thank you for your great wok!
Space magic. Nice video!
This was a great video for explanation. Thanks.
Couldn't have been done any better!!
Amazing. Thank you so much
Great video! Thank you for you time
Great video!
Clear explanation. Couldn't be better.
Just moved into an office that had a beautiful Mitsubishi heatpump system and instead of the landlord fixing it, he installed some crappy baseboard heaters last winter and a low-end forced air conditioning system with one return. After running all the wiring for the baseboard heaters, cutting out wall trim and plumbing all the ductwork for the air conditioner, he probably could have just bought a whole new heatpump system but what does he care, he isn't paying the utilities!Heatpumps are VERY economical. Everyone knows turning electricity into heat is less cost effective than using gas or refrigerants.
heat pumps lose efficiency as the temperature outside drops...to below -25 celcius.
more money than brains!!!
kosmosleha The video producer is from Indiana originally and knows that spring and fall don't last long there. Heat pumps have a better pay off in moderate climates where cool, not cold, weather hangs on for a while, like in the southern states.
its amazing someone thought of how to create this..
Thank you Mark. The creator has an HVAC background as well as a video production interest.
Very Good! A lot learned!
very useful thanks
good example. Greatings from Geosolar v63
i love everything that has to do with AC units \ heatpumps
Sigh, my brain doesn't work. I can't seem to understand things anymore, and I love learning.
great job
Awesome....very good explanation..
Thanks for the info! I was right! Some people told me that the outdoor unit generated heat in winter mode but no! It generates cold!
Well, actually a heat pump always extract heat from one end and moves it to the other. It's strictly not generating cold, but stealing heat from the colder air outside. It means the air around it will be colder (or less warm) and water will freeze.
Very good example....
We use this video on school to learn the basics of heat pumps
very good job
Video didn't mention that some defrost boards utilize an outdoor t/stat to initiate defrost.
When temp outside falls below a certain setpoint temp, it closes to complete the auxillary heat circuit, putting the heat pump in defrost & bringing on the aux heat.
I like outdoor t/stats but not all heat pump t/stats are set up for an outdoor t/stat.
I think at the t/stat in the home, W (white wire) & Aux (sometimes the blue wire) are jumpered.
I like to designate black for common & brown for Emergency Heat.
T/stat wire color codes vary, though.
Really clear
good work
many thanx !!!!
well done bruh
nice it is that reversal valve that switches from a cooler to a heater systems or changes the refrigernet flow nices
Good video
Good
great thanks
THANKS
Do you think that this is the best heating and cooling system for a new build home
Hei! perfect video!! But I can´t see the point of having two valves and bypass (they are allready in serial)?? And I also wonder why having two dimensions on piping (Fluid 1/4" Vap 3/8") when the circuit changes diraction anyways.. thanks!
Thank you
Welcome to thermodynamics and heat transfer. Two important mechanical engineering courses and they go very difficult!
this should win a vma
Famous Dex's son it did. Just beat out Nikki Minaj
The Apartment I live in with My Family has the outdoor unit and indoor unit far separated cause the outdoor unit is outside one of the bedroom and the indoor unit is in the utility closet which is in part of the hallway.
Sometimes the outdoor units fan shuts down for some time then I hear a hissing sound and it's silenced completely and I still hear the indoor unit running still then the outdoor one starts to make some noises for a few second then the hissing noises is heard again, then it starts up again and goes back to normal, that mostly happens in the winter. I wonder if that's a normal thing for the outdoor unit to do?
Sir,
Why have you used hot ambient air in winter cycle for input in Evaporator coil? Is it a convention? Is it because the refrigerant temperature after passing the evaporator coil still lower than the ambient? How come will it make a difference in respect to ambient and cooled space?
Thank you for making a precise & complete explanation.
Yes, the ambient, outside air is still warmer in the winter than the boiling point of the refrigerant at such a low pressure, thus allowing heat extraction from even frigid air. However, as the outside ambient air reaches extremely low temps, the unit will become less efficient and if it can not maintain the house thermostat set point, the auxiliary or "strip" heat will turn on to assist.
it is the best one
Most bestest video
Very Good (y)
All the A/C that are installed in houses in my country, have a mode button. The options are usually cool, dehumid, fan, heat and auto. I want to emphasize that they have both heating and cooling. Does this make all the A/Cs heat pumps?
MihalisNavara - No it does not necessarily mean it is a heat pump. If the outside fan is blowing REALLY cold air out of it when the outside temp is around 17° C or below, it's probably a heat pump. If the outside unit is not running at all during the cool temps, but the inside unit is heating the house, probably NOT a t heat pump.
Neat O!
thanks a bunvh
I’m 16 y/o and I plan on becoming an HVAC technician when I grow up this is still very confusing for me if anyone has any advice on how to better understand or better prepare I would greatly appreciate it.
It's a lot to take in. The creator of this video attended a technical school full time for one year and still only had a fundamental grasp of the hvac/refrigeration principles upon graduation, but that's all it took to land a job in the field and start a career that provides a good living. This video is only intended to explain it, as good as possible, in less than 5 minutes. I hope it brought you just a little closer and wishing you the best in the field!
Im looking at having one of these installed in my home. Does anyone know the long term cost effectiveness of these units. and do they basically pay for themselves.
As far as I'm aware, this is one of the most efficient ways of heating a home, so it's likely to pay off soon.
Kyle Debettignies
I hope you stayed away from an HP. They are far too complicated and cost far more in the long run with maintenance due to unavoidable failures. Just go with a convention AC and furnace and avoid the trouble and expense.
It says that this is more efficient yet now you have your furnace and your ac unit running which draws more electricity than having just your furnace running. How are you supposed to cover your AC unit outside if it's going to power on here and there in the winter?
The idea is, that in moderately cool weather, the heat pump keeps the backup or emergency heat from coming on. Some backup heat is electric heaters, as in the video and some are gas.
Is this the same as fliping an air conditioner around in your window
Sorry for the delayed response... but mechanically speaking... Yes, it is, with the added defrost cycle.
I literally said "woow" at the end of this video.
How does this work in very cold climates like Minnesota?
Not nearly as good as moderate climates, although they are getting better at extracting heat from very frigid air.
Does anyone know how long the defrost cycle lasts? Is is switched on every hour or so for a few minutes?
It can be, depending upon outside temp and humidity. You will hear the outside fan stop, but will hear the compressor still running and the swoosh of the reversing valve when it actuates.
Dig it
Couldn't you use a solar hot water panel to cycle through the chamber so you don't need to defrost all the time?
I like solar, but in this instance, it would not be cost-effective at all.
on the bottom of my central motor inside there are spriall lookig springs the turn red what does this mean
Ben,
That is probably the auxiliary strip heat, pointed out in the defrost cycle of this video.
Ben Soria Its a coil that heats up warming the air while in defrost mode
Does it use OUTSIDE air to heat/cool the house inside?
It only steals heat from the outside air or sheds heat to the outside air via the refrigerant lines and fan. It does not pull outside air in unless there is a fresh air intake installed.
@@chaffeeair Oh, thanks. So for example, if you live near a smoggy freeway it won't pull in all that smog?
Correct, it would not.
What if you set a summer mode in winter?
The thermostat decides if you need heat or cooling in the house. Cooling = summer mode and Heating = winter mode.
Can I use a heat pump for a walk in freezer?
I don't think so. The refrigerant for a heat pump or ac unit is designed for medium temps. Low temp applications use a different refrigerant.
I don't understand why the gas is hot if under high pressure. An increase in pressure will lead to a decrease in volume, causing the particles to have less kinetic energy. This would cause a decrease in temperature producing a liquid. AM I wrong?
Melissa Liddington You are right in a sense. Each molecule has picked up heat from the evaporator, but they are greatly spread apart, so we don't sense that heat if we were to touch the line, because the volume is low, i.e. the larger suction line entering the compressor. Now, when it enters the high pressure zone, the molecules are compressed closer together, so there is more heat energy per cubic centimeter or cubic inch, i.e. discharge line leaving the compressor. Hopefully this helps.
Let's say that we have a heat pump like this one: HITACHI YUTAKI-M 14KW MONOBLOC ATW HEAT PUMP. I want to know the energy consumption (electricity consumption). Thanks.
I apologize for the delay. From reading up on that unit, it consumes 4.07kW so if it runs for one hour that would be 4.07kWh
Not bad, but I feel you have your colors backwards. Red normally indicated heat whereas blue indicates cool. Therefor it is hard to follow your example as one has to constantly reverse this in one's mind as one watches.
So it’s exactly the same as an air conditioner.
They just built an air conditioner that you can run in reverse.
Douglas, you are correct... with the added defrost cycle.
Sorcery!
This makes no sense to me and it seems to be described in such a simple manor too. I am going to just assume it's a good system on my new home. I'll just hire somebody to fix it that understands this stuff. I fix computers for a reason, this crap is way to hard to understand.
A little too fast on the narration and "busy" on the graphics.
what a nice ex...........
Do not get this at all
??? this video moves way to fast
I attempted a 5 minute or less explainer on this very-technical subject... difficult.