Excellent. I was looking at R290 pressure enthalpy diagrams a few days ago and concluded it much better than R410. I’m glad you confirmed my thought. Very clear.
I am building a r290 heat pump with an unused r22 compressor and ballance of components, I will be using a closed loop in a 100m deep 15cm diameter well and using the heat in radiant floors. Thanks for your video adding to my opinion that propane is a great refrigerant as long as you plan for it s flammability!
Thanks. Hard to put everything on video, graphs are on logarithmic scale. I can send you link where you can create your own graph depending on refrigerant.
Very nice and ussefull video. I would be curious for a low temp setup, like under floor heating with a temp of 35 C what is more efficient an, R32 or R290 air to water heat pump in an average outside temp of 0C.
My 4K tv I switch it on great I don’t know how it works don’t need to.My Heat Pump same can’t change it stuck with it? Everyone says keep the flow rate and temperature down so how does this help Mario it is nice you are trying to help.
What I am saying is why does the heat pump not self regulate.Heat loss calculations haha I put my gas central heating on set the temperature forget about it,put heat pump in have you done your heat loss calculations it is costing a fortune has it been installed correctly obviously not.The cowboys have absolutely no come back on them
When you said air-refrigerant separator did you mean filter drier?? As far as I know the only refrigeration systems that have an air separator air sub ambient pressure systems like ammonia.
No, it means if refrigerant enter the water circuit, it is discharged in the air on the top of the separator as water is heavier it will be free from refrigerant
9 หลายเดือนก่อน +1
The secret is in lower compresion ratio and higher refrigerant volumetric efficiency!
High temperatures are no good for heat pumps. To obtain the highest SCOP and therefore get the full benefit of using a heat pump it needs to be run at low temperatures, typically no more than 35degC for UFH or 45degC for radiators. At these temperatures, R32 is far superior to R290, based on evidence from both research papers and the UK MCS test database. The MCS test results clearly show that R32 heat pumps are far more efficient than their directly equivalent R290 counterparts, for example the Mitsubishi R32 6kW model (PUZ-WM60VAA) has SCOP of 4.81 at 35degC, compared to the Mitsubishi R290 6kW model (PUZ-WZ60VAA - a much newer model) which has a SCOP of 4.39 at 35degC. If you look at the new "Cosy 6" R290 heat pump offering from Octopus, the MCS test result for SCOP is even worse at only 3.98 at 35degC, a surprisingly poor result.
Hi, thanks for the information. I agree with low flow temperatures, few other videos on channel explaining benefit of low temp. However, this video was made for the purpose of comparing how R290 is achieving such a high flow temp. and regarding DHW on applications where higher temp. is needed it will be great. Also, in next few years with F gas phase out in Europe, everything will go on R290 so if R32 has better efficiency it will not mean anything if it will be forbidden.
Excellent. I was looking at R290 pressure enthalpy diagrams a few days ago and concluded it much better than R410. I’m glad you confirmed my thought. Very clear.
Thanks
I am building a r290 heat pump with an unused r22 compressor and ballance of components, I will be using a closed loop in a 100m deep 15cm diameter well and using the heat in radiant floors.
Thanks for your video adding to my opinion that propane is a great refrigerant as long as you plan for it s flammability!
Send me some photos when you finish the project, sounds interesting 😊
Elite info. thank you
thanks
excellent video !
Thank you very much!
Thanks for putting it together. Is it possible to put all graphs on the same scales?
Thanks.
Hard to put everything on video, graphs are on logarithmic scale.
I can send you link where you can create your own graph depending on refrigerant.
@@HVACEducationHub Can you add a link here to the graph details? Thank You !!!
Here it is: tlk-energy.de/en/phase-diagrams/pressure-enthalpy
Well explained
Thanks
Very nice and ussefull video. I would be curious for a low temp setup, like under floor heating with a temp of 35 C what is more efficient an, R32 or R290 air to water heat pump in an average outside temp of 0C.
Thanks.
Some analysis and comments that I saw are on R32 as more efficient for low temp
My 4K tv I switch it on great I don’t know how it works don’t need to.My Heat Pump same can’t change it stuck with it? Everyone says keep the flow rate and temperature down so how does this help Mario it is nice you are trying to help.
hi, not sure if understand the question, please clarify?
What I am saying is why does the heat pump not self regulate.Heat loss calculations haha I put my gas central heating on set the temperature forget about it,put heat pump in have you done your heat loss calculations it is costing a fortune has it been installed correctly obviously not.The cowboys have absolutely no come back on them
When you said air-refrigerant separator did you mean filter drier?? As far as I know the only refrigeration systems that have an air separator air sub ambient pressure systems like ammonia.
No, it means if refrigerant enter the water circuit, it is discharged in the air on the top of the separator as water is heavier it will be free from refrigerant
The secret is in lower compresion ratio and higher refrigerant volumetric efficiency!
correct :)
Is it stupid to buy today R32 heat pump vs R290 ?
No, R290 just started so probably it will pass few years to be number 1
High temperatures are no good for heat pumps. To obtain the highest SCOP and therefore get the full benefit of using a heat pump it needs to be run at low temperatures, typically no more than 35degC for UFH or 45degC for radiators. At these temperatures, R32 is far superior to R290, based on evidence from both research papers and the UK MCS test database. The MCS test results clearly show that R32 heat pumps are far more efficient than their directly equivalent R290 counterparts, for example the Mitsubishi R32 6kW model (PUZ-WM60VAA) has SCOP of 4.81 at 35degC, compared to the Mitsubishi R290 6kW model (PUZ-WZ60VAA - a much newer model) which has a SCOP of 4.39 at 35degC. If you look at the new "Cosy 6" R290 heat pump offering from Octopus, the MCS test result for SCOP is even worse at only 3.98 at 35degC, a surprisingly poor result.
Hi, thanks for the information. I agree with low flow temperatures, few other videos on channel explaining benefit of low temp. However, this video was made for the purpose of comparing how R290 is achieving such a high flow temp. and regarding DHW on applications where higher temp. is needed it will be great.
Also, in next few years with F gas phase out in Europe, everything will go on R290 so if R32 has better efficiency it will not mean anything if it will be forbidden.
R410A GWP is 2088 !
Thanks, hard to know from head 😂