STIEBEL ELTRON Heat pumps, Technical Manual

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ExpEndItUrE of EnErgy valUES of HEat pUmpS
Table 5.3.8 - Correction factors F
Dϑ
for deviating temperature differentials at the condenser
operation
Dϑ
b
(K)
temperature differential at the test bed
Dϑ
M (K) Din en 255
3 4 5 6 7 8 9 10 11 12 13 14 15
3 1.000 0.990 0.980 0.969 0.959 0.949 0.939 0.928 0.918 0.908 0.898 0.887 0.877
4 1.010 1.000 0.990 0.980 0.969 0.959 0.949 0.939 0.928 0.918 0.908 0.898 0.887
5 1.020 1.010 1.000 0.990 0.980 0.969 0.959 0.949 0.939 0.928 0.918 0.908 0.898
6 1.031 1.020 1.010 1.000 0.990 0.980 0.969 0.959 0.949 0.939 0.928 0.918 0.908
7 1.041 1.031 1.020 1.010 1.000 0.990 0.980 0.969 0.959 0.949 0.939 0.928 0.918
8 1.051 1.041 1.031 1.020 1.010 1.000 0.990 0.980 0.969 0.959 0.949 0.939 0.928
9 1.061 1.051 1.041 1.031 1.020 1.010 1.000 0.990 0.980 0.969 0.959 0.949 0.939
10 1.072 1.061 1.051 1.041 1.031 1.020 1.100 1.000 0.990 0.980 0.969 0.959 0.949
Table 5.3.7 - Correction factor F
ϑ
for brine | water heat pumps
Minimum brine temperature at the
evaporator inlet (°C) Heating circuit design temperature
35°C / 28°C 55 °C / 45 °C
2 1.113 0.917
1 1.100 0.904
0 1.087 0.890
–1 1.074 0.877
–2 1.062 0.864
–3 1.051 0.852
Table 5.3.9 - Correction factor F
ϑ
for water | water heat pumps
Minimum water temperature at the
evaporator inlet (°C) Heating circuit design temperature
35°C / 28°C 55 °C / 45 °C
12 1.106 0.892
11 1.087 0.873
10 1.068 0.853
9 1.049 0.834
8 1.030 0.815
Table 5.3.10 - Correction factor F
ϑ
for air | water heat pumps
outside air inlet (°C) Heating circuit design temperature
35°C / 28°C
55 °C / 45 °C
–7 0.103 0.080
+2 0.903 0.745
+10 0.061 0.053
Table C3-4c - Expenditure of energy value eg and auxiliary drive energy q
gHE
for electric heat pumps
electric heat pump Heating circuit temperature expenditure of energy value Auxiliary energy
e
g
q
gHe
(kwh/m² p.a.)
water/water 55 °C / 45 °C 0.23
3.2 x A
n
-0.1
35°C / 28°C 0.19
Ground/water 55 °C / 45 °C 0.27
1.9 x A
n
-0.1
35°C / 28°C 0.23
Air/water 55 °C / 45 °C 0.37
0
35°C / 28°C 0.30