SharePurdue highlights: R410A “drop-ins”performance
According to a paper presented at Purdue in July 2016, two new “drop-in” alternatives to R410A are said to have exhibited very similar performance in experimental tests.
This paper will be available in Fridoc in te near future.
According to a new communication presented in the IIR co-sponsored Conferences at Purdue last July, two new “drop-in” alternatives to the air conditioning refrigerant R410A are said to have exhibited very similar performance in experimental tests.
The two refrigerants, Chemours DR-5A (R454B) and Honeywell’s L41-2 (R447A), were tested in a 10kW air-to-water heat pump in order to compare their performance as drop-in low GWP alternatives to R410A. Results of these tests were presented in the communication n° 2103 “Evaluation of R-410A refrigerant alternatives in a residential reversible air-to-water heat pump” by P. Pardo, L. Charbonnier and M. Mondot.
Alternative refrigerants with low-GWP were under investigation for residential heat pumps and air-conditioners as R410A has a GWP of 2088. In this paper, two promising alternative refrigerants, DR-5A (R454B) and L41-2 (R447A), both HFC-HFO mixtures with a GWP of 466 and 583 respectively, were tested in a residential reversible air-to-water heat pump. The results show that R410A replacement by L41-2 and DR-5A does not raise any particular problem and the performance obtained is, aside from some few exceptions, almost equivalent (+/-10%) to that with R410A. These experimental results provide better understanding and knowledge about R410A replacement in heat pumps.
Across a range of rating conditions and operating limits, cooling performance was said to be better than that achieved with DR-5A than that with R410A, from +3 to +6% for the cooling capacity and from +10 to +12 % for the EER. With L41-2, greater EER is obtained, from +4 to +14%, but cooling capacities were slightly lower, between -1% to -7%, compared to those with R410A.
In heating mode, DR-5A achieved a COP equivalent to or greater than that with R410A – between -3% and +13%. Heating capacities obtained were said to be mainly lower than those with R410A, from -8% to -3%.
Heating COPs for L41-2 were -4% to +11% compared to R410A but heating capacities ranged from -31% to -2% lower.
Evaluation of R-410A refrigerant alternatives in a residential reversible air-to-water heat pump. Pardo P, Charbonnier L, Mondot M.
The two refrigerants, Chemours DR-5A (R454B) and Honeywell’s L41-2 (R447A), were tested in a 10kW air-to-water heat pump in order to compare their performance as drop-in low GWP alternatives to R410A. Results of these tests were presented in the communication n° 2103 “Evaluation of R-410A refrigerant alternatives in a residential reversible air-to-water heat pump” by P. Pardo, L. Charbonnier and M. Mondot.
Alternative refrigerants with low-GWP were under investigation for residential heat pumps and air-conditioners as R410A has a GWP of 2088. In this paper, two promising alternative refrigerants, DR-5A (R454B) and L41-2 (R447A), both HFC-HFO mixtures with a GWP of 466 and 583 respectively, were tested in a residential reversible air-to-water heat pump. The results show that R410A replacement by L41-2 and DR-5A does not raise any particular problem and the performance obtained is, aside from some few exceptions, almost equivalent (+/-10%) to that with R410A. These experimental results provide better understanding and knowledge about R410A replacement in heat pumps.
Across a range of rating conditions and operating limits, cooling performance was said to be better than that achieved with DR-5A than that with R410A, from +3 to +6% for the cooling capacity and from +10 to +12 % for the EER. With L41-2, greater EER is obtained, from +4 to +14%, but cooling capacities were slightly lower, between -1% to -7%, compared to those with R410A.
In heating mode, DR-5A achieved a COP equivalent to or greater than that with R410A – between -3% and +13%. Heating capacities obtained were said to be mainly lower than those with R410A, from -8% to -3%.
Heating COPs for L41-2 were -4% to +11% compared to R410A but heating capacities ranged from -31% to -2% lower.
Evaluation of R-410A refrigerant alternatives in a residential reversible air-to-water heat pump. Pardo P, Charbonnier L, Mondot M.