Installation manual

206
9.3
Table 9.2: Correction factors F
operation
for different operating conditions for
air-to-water heat pumps
Table 9.3: Correction factors Fu for different operating conditions for brine-to-
water heat pumps
Table 9.4: Correction factors Fu for different operating conditions for water-to-
water heat pumps
NOTE
Both the location of the system and the auxiliary power supply should be
taken into consideration when calculating the annual performance factor
according to VDI 4650. In contrast, the annual performance factor is
calculated according to EnEV, DIN V 4701-T10 (1 / generator effort figure)
and is independent of the location of the system. The auxiliary power
consumption is examined separately.
NOTE
Visit www.dimplex.de to use our annual performance factor calculator for
Dimplex heat pumps.
4. Step: Determine the correction factor for the existing operating conditions
⇒ i) Determine the maximum flow temperature as specified on the day the system design was
established according to DIN 4701
⇒ ii) Determine the mean heat source temperature and location
⇒ iii) Determine correction factor(s) F
υ
using Tables 2a-c)
i) Maximum flow temperature as specified on the day the system design was
established
__________°C
ii)
Brine-to-water
Mean brine temperature: __________°C
Water-to-water
Mean ground water temperature: __________°C
Air-to-water
Location of the heat pump in compliance with DIN
4701:
Essen
Berlin
Munich
Frankfurt
Hamburg
iii)
Air-to-water (see Table 9.2 on p. 206)
Correction factor Fυ:
Correction factor Fυ:
Correction factor Fυ:
____________
____________
____________
(at A-7/W35)
(at A2/W35)
(at A10/W35)
(Intersection points of the max. flow temperature and the three external temperatures -7, 2 and 10 °C at the selected location)
Brine-to-water (see Table 9.3 on p. 206)
Correction factor F
operation 1
:
Water-to-water (see Table 9.4 on p. 206)
____________
(Intersection point of max. flow temperature (30-55 °C) and heat source temperature (TBrine, TWater)
T
max. flow
[°C]
30 35 40 45 50 55
Essen
-7 °C 0.070 0.066 0.062 0.059 0.055 0.051
2 °C 0.799 0.766 0.734 0.701 0.668 0.635
10 °C 0.258 0.250 0.242 0.233 0.225 0.217
Munich
-7 °C 0.235 0.224 0.213 0.202 0.191 0.180
2 °C 0.695 0.668 0.642 0.616 0.590 0.564
10 °C 0.173 0.168 0.163 0.158 0.153 0.147
Hamburg
-7 °C 0.109 0.104 0.098 0.092 0.087 0.081
2 °C 0.794 0.762 0.730 0.698 0.667 0.635
10 °C 0.212 0.205 0.198 0.192 0.185 0.179
Berlin
-7 °C 0.144 0.137 0.130 0.123 0.116 0.109
2 °C 0.776 0.767 0.716 0.686 0.656 0.626
10 °C 0.188 0.182 0.177 0.171 0.165 0.160
Frankfurt
-7 °C 0.088 0.084 0.079 0.075 0.070 0.066
2 °C 0.799 0.767 0.735 0.704 0.672 0.640
10 °C 0.234 0.227 0.220 0.212 0.205 0.198
T
max. flow
[°C]
30 35 40 45 50 55
T
Brine
[°C]
2 1.161 1.113 1.065 1.016 0.967 0.917
1 1.148 1.100 1.052 1.003 0.954 0.904
0 1.135 1.087 1.039 0.990 0.940 0.890
-1 1.122 1.074 1.026 0.977 0.927 0.877
-2 1.110 1.062 1.014 0.965 0.915 0.864
-3 1.099 1.051 1.002 0.953 0.903 0.852
T
max. flow
[°C]
30 35 40 45 50 55
T
Water
[°C]
12 1.158 1.106 1.054 1.000 0.947 0.892
11 1.139 1.087 1.035 0.981 0.927 0.873
10 1.120 1.068 1.016 0.962 0.908 0.853
9 1,101 1,049 0,997 0,943 0,889 0,834
8 1.082 1.030 0.978 0.924 0.870 0.815
5. Step: Use the correction factor(s) F
υ
, F
Δυ
and COP(s) ε
standard
according to step 1) and calculate the annual performance factor
β
Brine-to-water and water-to-water heat pumps
Air-to-water heat pumps