Abstract
The conversion from CFC500 to HFC134a in a large heat pump at Hammarby, Sweden, was accomplished with a very positive result. Until June 11, 1992, the heat pump has been running for 6641 hours and has generated 148 GWh district heating energy with the new refrigerant without any unplanned stop, which gives an availability of 100 %. District heating water temperatures above 90 deg C were achieved. The performance test shows that the heat output decreases by 2 to 4 % with HFC134a compared to CFC500 at full load. That means that the production of heating energy decreases by 1.4 % in a normal year, while the production of heating energy from the complete plant will decrease by less than 0.3 %. The COP is practically unchanged. These performance results are only applicable to this specific heat pump (compressor) with its new design, and therefore are not valid for any conversion from CFC500 to HFC134a. (6refs., 13 figs., 2 tabs.).
Widgren, T
[1]
- ABB STAL AB, Finspaang (Sweden)
Citation Formats
Widgren, T.
Conversion to refrigerant HFC 134a in a 25 MW heat pump at Hammarby, Sweden. Final report on a full-scale test 1991/92.
Sweden: N. p.,
1992.
Web.
Widgren, T.
Conversion to refrigerant HFC 134a in a 25 MW heat pump at Hammarby, Sweden. Final report on a full-scale test 1991/92.
Sweden.
Widgren, T.
1992.
"Conversion to refrigerant HFC 134a in a 25 MW heat pump at Hammarby, Sweden. Final report on a full-scale test 1991/92."
Sweden.
@misc{etde_10132672,
title = {Conversion to refrigerant HFC 134a in a 25 MW heat pump at Hammarby, Sweden. Final report on a full-scale test 1991/92}
author = {Widgren, T}
abstractNote = {The conversion from CFC500 to HFC134a in a large heat pump at Hammarby, Sweden, was accomplished with a very positive result. Until June 11, 1992, the heat pump has been running for 6641 hours and has generated 148 GWh district heating energy with the new refrigerant without any unplanned stop, which gives an availability of 100 %. District heating water temperatures above 90 deg C were achieved. The performance test shows that the heat output decreases by 2 to 4 % with HFC134a compared to CFC500 at full load. That means that the production of heating energy decreases by 1.4 % in a normal year, while the production of heating energy from the complete plant will decrease by less than 0.3 %. The COP is practically unchanged. These performance results are only applicable to this specific heat pump (compressor) with its new design, and therefore are not valid for any conversion from CFC500 to HFC134a. (6refs., 13 figs., 2 tabs.).}
place = {Sweden}
year = {1992}
month = {Dec}
}
title = {Conversion to refrigerant HFC 134a in a 25 MW heat pump at Hammarby, Sweden. Final report on a full-scale test 1991/92}
author = {Widgren, T}
abstractNote = {The conversion from CFC500 to HFC134a in a large heat pump at Hammarby, Sweden, was accomplished with a very positive result. Until June 11, 1992, the heat pump has been running for 6641 hours and has generated 148 GWh district heating energy with the new refrigerant without any unplanned stop, which gives an availability of 100 %. District heating water temperatures above 90 deg C were achieved. The performance test shows that the heat output decreases by 2 to 4 % with HFC134a compared to CFC500 at full load. That means that the production of heating energy decreases by 1.4 % in a normal year, while the production of heating energy from the complete plant will decrease by less than 0.3 %. The COP is practically unchanged. These performance results are only applicable to this specific heat pump (compressor) with its new design, and therefore are not valid for any conversion from CFC500 to HFC134a. (6refs., 13 figs., 2 tabs.).}
place = {Sweden}
year = {1992}
month = {Dec}
}