Heat Pumps Explained - How Heat Pumps Work HVAC
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Date: 2023-11-17
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Comments and reviews: 30
Douglas
I've been looking into changing my air conditioner to a heat pump unfortunately like everything else there is a major Mark up so airconditioning technician are not interested in upgrading old air conditioner unit's so they want to sell a new heat pump unit and make a large profit most air conditioning system have very little run time our unit may have 20 hours on it I've thought about trying to do the work myself I'd heard about the reversing valve but not the other two valves you show in your video I've also heard about using ground water for cooling and heating with a heat pump we have water 20 feet down so would love to use it to cut heating costs further I'm also looking at going solar electric I looked at heat pump water heater I thought maybe if I could use the hotwater to heat my house but even though some are pricey they are still affordable if I do the installation myself but non will run off buget friendly solar electric so they become unaffordable adding three grand to two grand is buget tight adding three grand to eight grand is unaffordable for most of so thank you for an excellent video
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I've been looking into changing my air conditioner to a heat pump unfortunately like everything else there is a major Mark up so airconditioning technician are not interested in upgrading old air conditioner unit's so they want to sell a new heat pump unit and make a large profit most air conditioning system have very little run time our unit may have 20 hours on it I've thought about trying to do the work myself I'd heard about the reversing valve but not the other two valves you show in your video I've also heard about using ground water for cooling and heating with a heat pump we have water 20 feet down so would love to use it to cut heating costs further I'm also looking at going solar electric I looked at heat pump water heater I thought maybe if I could use the hotwater to heat my house but even though some are pricey they are still affordable if I do the installation myself but non will run off buget friendly solar electric so they become unaffordable adding three grand to two grand is buget tight adding three grand to eight grand is unaffordable for most of so thank you for an excellent video
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Dean
I used the exact solenoid with a high flow rate as the fluid pushes down on the oversized valve land for sealing at static pressure. But mine is on an oil accumulator to pre-lube a gas V-8 engine. It is energized with the key on so during starting, it quickly floods the main oil gallery (High-Flow, 1/2 NPT, Viton Rubber Seal; New surplus at 1/10th the cost of Name Brand oil accumulator companies;
with pressurized oil to the bearings. This would greatly extend the life of all Stop-Start engines in those vehicles. After being an ASE Master Tech since 78, I will argue a room of engineers under the table! 5, 000hrs is the 150, 000 mile equivalent that GM designs parts, materials and still make them to keep from paying CAFE a fine. It's a law passed by the Clinton administration.
Great job on the video.
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I used the exact solenoid with a high flow rate as the fluid pushes down on the oversized valve land for sealing at static pressure. But mine is on an oil accumulator to pre-lube a gas V-8 engine. It is energized with the key on so during starting, it quickly floods the main oil gallery (High-Flow, 1/2 NPT, Viton Rubber Seal; New surplus at 1/10th the cost of Name Brand oil accumulator companies;
with pressurized oil to the bearings. This would greatly extend the life of all Stop-Start engines in those vehicles. After being an ASE Master Tech since 78, I will argue a room of engineers under the table! 5, 000hrs is the 150, 000 mile equivalent that GM designs parts, materials and still make them to keep from paying CAFE a fine. It's a law passed by the Clinton administration.
Great job on the video.
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spelunkerd
I suddenly realized why they call the two lines that connect the outdoor unit to indoor hardware the 'vapor line' and the more narrow gauge 'liquid line'. Because of the reversing valve, the direction of flow on those two lines reverses flow when changing mode, but the larger vapor line always carries vapor, the more narrow gauge line carries mostly liquid. During heating the vapor line carries slightly superheated vapor to the indoor condensor, during cooling the room temperature vapor makes its way back to the compressor in the opposite direction. Presumably the indoor vapor line always comes off the top of the coils, the liquid line comes off the bottom, so gravity keeps fluid from going the wrong way and choking the compressor.
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I suddenly realized why they call the two lines that connect the outdoor unit to indoor hardware the 'vapor line' and the more narrow gauge 'liquid line'. Because of the reversing valve, the direction of flow on those two lines reverses flow when changing mode, but the larger vapor line always carries vapor, the more narrow gauge line carries mostly liquid. During heating the vapor line carries slightly superheated vapor to the indoor condensor, during cooling the room temperature vapor makes its way back to the compressor in the opposite direction. Presumably the indoor vapor line always comes off the top of the coils, the liquid line comes off the bottom, so gravity keeps fluid from going the wrong way and choking the compressor.
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Geoffrey
At the outside heat exchanger 'the refrigerant picks up the themal energy from the outside air';
Let's say that the outside air is at 0deg C, then the warmest the refrigerant can reach is 0deg C also. This refrigerant then has to provide the energy to warm the inside of the dwelling. How does this work? It seems to me that the compressor has to compress/warm the refrigerant to say 25deg C so that heat can be transferred to the inside of the dwelling at the indoor heat exchanger (room at 20deg C)
If I am correct then the compressor is doing most of the heating. Doesn't sound too clever to me, and expensive, so what am I missing?
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At the outside heat exchanger 'the refrigerant picks up the themal energy from the outside air';
Let's say that the outside air is at 0deg C, then the warmest the refrigerant can reach is 0deg C also. This refrigerant then has to provide the energy to warm the inside of the dwelling. How does this work? It seems to me that the compressor has to compress/warm the refrigerant to say 25deg C so that heat can be transferred to the inside of the dwelling at the indoor heat exchanger (room at 20deg C)
If I am correct then the compressor is doing most of the heating. Doesn't sound too clever to me, and expensive, so what am I missing?
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Carlo
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?
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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?
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Overthought
Thank you for the informative vid! Question: can anyone clarify how the 2 temperature zones are managed? It seems to me that you'd need 1 refrigerant that boils at low temp, and another at high temp, so that you can capture/release the heat at those phase transitions. Yet these diagrams seem to suggest 1 single refrigerant is used. How can that work?
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Thank you for the informative vid! Question: can anyone clarify how the 2 temperature zones are managed? It seems to me that you'd need 1 refrigerant that boils at low temp, and another at high temp, so that you can capture/release the heat at those phase transitions. Yet these diagrams seem to suggest 1 single refrigerant is used. How can that work?
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education
I'll remain sceptical of free energy machines like these (along with solar and wind) until I see an irrefutable breakdown of resource and energy investment in their manufacture, maintenance and service life that prove they produce more than an incremental gain (if any) in efficiency over much simpler, grid-powered or fired systems.
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I'll remain sceptical of free energy machines like these (along with solar and wind) until I see an irrefutable breakdown of resource and energy investment in their manufacture, maintenance and service life that prove they produce more than an incremental gain (if any) in efficiency over much simpler, grid-powered or fired systems.
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blixten2928
Even idiots like me (a historian, with zero knowledge of physics or engineering) can be very much enlightened and informed by this video. I always wondered how my f---g hot air pump worked. Thought it was by black magic. And yet, depend on it so thoroughly (live in Sweden. THANK YOU.
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Even idiots like me (a historian, with zero knowledge of physics or engineering) can be very much enlightened and informed by this video. I always wondered how my f---g hot air pump worked. Thought it was by black magic. And yet, depend on it so thoroughly (live in Sweden. THANK YOU.
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ChevaPate
You forgot the coolest part, put a subcooler on the liquid side, the liquid refrigerant cant be cooler then the water in the tank, then you can put a heat exchanger in the garage or something and take out moore energy before the liquid going to the expansion valve and vaporize!
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You forgot the coolest part, put a subcooler on the liquid side, the liquid refrigerant cant be cooler then the water in the tank, then you can put a heat exchanger in the garage or something and take out moore energy before the liquid going to the expansion valve and vaporize!
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TheBlackadder
I have no clue in this area, so please bear with me. But it feels too good to be true. If there are liquids with such low boiling point, couldn't you have a closed-circuit with a turbine set up to generate electricity? Too dangerous?
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I have no clue in this area, so please bear with me. But it feels too good to be true. If there are liquids with such low boiling point, couldn't you have a closed-circuit with a turbine set up to generate electricity? Too dangerous?
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RecumbentRocks2
Correct me if I'm wrong, but hydroflurocarbons were banned from fridges because they are 1000's of time more harmful to the ozone layer than carbon dioxide. So why are we now using this chemical in heat exchangers?
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Correct me if I'm wrong, but hydroflurocarbons were banned from fridges because they are 1000's of time more harmful to the ozone layer than carbon dioxide. So why are we now using this chemical in heat exchangers?
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Firebrand55
To quote the unforgettable Terry Thomas. 'Oh I say. what a perfectly splendid, top hole video! Very clear diagrams, excellent narration, well explained. When I have to have one, I'll back-refer to this vid!
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To quote the unforgettable Terry Thomas. 'Oh I say. what a perfectly splendid, top hole video! Very clear diagrams, excellent narration, well explained. When I have to have one, I'll back-refer to this vid!
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Hafiz
Content and explanation is great but speaking too fast. To understand what is explained for someone who is trying to learn requires a number of repeat listening this video and sometimes one would find it tedious.
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Content and explanation is great but speaking too fast. To understand what is explained for someone who is trying to learn requires a number of repeat listening this video and sometimes one would find it tedious.
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John
These are by far the best and most clear videos that I have found. I use them in my Adult HVAC classes and they benefit my students greatly. Thanks for clear, concise, accurate, and sometimes amusing videos!
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These are by far the best and most clear videos that I have found. I use them in my Adult HVAC classes and they benefit my students greatly. Thanks for clear, concise, accurate, and sometimes amusing videos!
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Just
I always hear that heat pump is very efficient and save on electricity and air conditioner use a lot of electricity but arent they the same thing? Shouldnt both be consuming the same amount of electricity?
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I always hear that heat pump is very efficient and save on electricity and air conditioner use a lot of electricity but arent they the same thing? Shouldnt both be consuming the same amount of electricity?
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Scott
Ill be honest that is much more complicated than I thought it was gonna be. Great explanation!
Its crazy to think the amount of knowledge you need to have just to be a red seal tradesman!
Kudos
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Ill be honest that is much more complicated than I thought it was gonna be. Great explanation!
Its crazy to think the amount of knowledge you need to have just to be a red seal tradesman!
Kudos
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condor5635
Are the expansion valves in this example one-way only devices? They only allow flow in one direction hence the non-return valves and the fact that there are two of them in this example. Thanks.
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Are the expansion valves in this example one-way only devices? They only allow flow in one direction hence the non-return valves and the fact that there are two of them in this example. Thanks.
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Mukhtar
The best explanation I found so far, thank you. Will watch all of videos to understand the principle. I want to start this type of business in Kazakhstan in future, so just researching
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The best explanation I found so far, thank you. Will watch all of videos to understand the principle. I want to start this type of business in Kazakhstan in future, so just researching
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person8203
Bit of a push for heat pumps now. Im not convinced its worth the cost. Theres much cheaper things you can do to keep bills low, like improving insulation or even cladding your home
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Bit of a push for heat pumps now. Im not convinced its worth the cost. Theres much cheaper things you can do to keep bills low, like improving insulation or even cladding your home
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Leslie
This is by far the best video explaining and illustrating how heat pump works. Some other ones on here seem to assume you already have a master's degree in HVAC to understand them.
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This is by far the best video explaining and illustrating how heat pump works. Some other ones on here seem to assume you already have a master's degree in HVAC to understand them.
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Mattie
Thankyou for explaining in such a way that i understand. I have watched other videos but it just left me more confused, now watching this short video I get it, thanks again.
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Thankyou for explaining in such a way that i understand. I have watched other videos but it just left me more confused, now watching this short video I get it, thanks again.
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Anvil_08
Classic inverter heat pumps only have 1 expansion valve which works for Cooling and Heating. And on/off models have a small capillar pipe for Cooling the freon
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Classic inverter heat pumps only have 1 expansion valve which works for Cooling and Heating. And on/off models have a small capillar pipe for Cooling the freon
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Best
I think heap pump systems are a good option in places or state when winter is not super heavy like Northern us states with heavy super cold winter is a bad option
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I think heap pump systems are a good option in places or state when winter is not super heavy like Northern us states with heavy super cold winter is a bad option
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Kuldip
Great work your, videos are awesome, I need to make a project presentation at college can you please tell me how these type of animation explanations is made?
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Great work your, videos are awesome, I need to make a project presentation at college can you please tell me how these type of animation explanations is made?
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Nikola
How much energy does that compressor use? This is all nice, but is the electricity required for that compressor what uses electricity the most in this system?
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How much energy does that compressor use? This is all nice, but is the electricity required for that compressor what uses electricity the most in this system?
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John
Finally someone that explains how heat pumps work and doesn't just say: heat pumps don't create heat they just move it and then they leave you with that.
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Finally someone that explains how heat pumps work and doesn't just say: heat pumps don't create heat they just move it and then they leave you with that.
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Aaron
I genuinely don't understand how they work. I didn't find this video helpful. If anyone cam explain them to me I would be interested in understand them
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I genuinely don't understand how they work. I didn't find this video helpful. If anyone cam explain them to me I would be interested in understand them
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jmsbrone
so basically just a regular air cooler, but reversed and in lower temperature ranges. cooling down the outside even more and dumping heat inside
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so basically just a regular air cooler, but reversed and in lower temperature ranges. cooling down the outside even more and dumping heat inside
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Andrew
So do they work better if it's colder outside? Or would it work better inside as the temperature rises it would create more warmth use less power
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So do they work better if it's colder outside? Or would it work better inside as the temperature rises it would create more warmth use less power
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David
If i have immersion cooled ASICs pumping the dielctric fluid to a heat exchanger couldnt I use that as a substitute for the compressor?
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If i have immersion cooled ASICs pumping the dielctric fluid to a heat exchanger couldnt I use that as a substitute for the compressor?
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