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building heating load
7.0 kw
Hours run at full utilisation
1744
specific heat demand
50 w/m² (underfloor heating system 35/28 °C)
number of occupants
4
energy consumption DHw
2.00 kwh/person/day
Amortisation
0.0963 annuity table (depreciation 15 years with 5% interest)
Air | water heat
pump
brine | water
heat pump
water | water
heat pump
oil heating with
solar
Gas condensing
with solar
wood heating
(pellets)
1. System details
energy price heating
Ct/kwh
13.00
13.00
13.00
7.50
7.00
4.80
Domestic energy price
Ct/kwh
18.00
18.00
18.00
18.00
18.00
18.00
standing charge p.a.
euro
60.00
60.00
60.00
170.00
efficiency distribution
0.98
0.98
0.98
0.98
0.98
0.98
Heat source efficiency
1.00
1.00
1.00
0.90
0.99
0.90
DHw efficiency
1.00
1.00
1.00
0.80
0.80
0.80
Annual performance factor
3.60
4.40
4.70
Heating coverage
0.98
1.00
1.00
DHw coverage
0.95
1.00
1.00
Coverage solar heating/DHw
5%
5%
2. Investment
Heat source complete
euro
10.000.00
9.000.00
7.200.00
3.000.00
4.000.00
10.000.00
Heating system with DHw
euro
4.800.00
4.800.00
4.800.00
4.800.00
4.800.00
4.800.00
installation costs
euro
2.400.00
2.400.00
2.400.00
2.400.00
2.400.00
2.400.00
electrical installation
euro
1.050.00
1.050.00
1.050.00
350.00
350.00
350.00
solar thermal system
euro
4.600.00
4.600.00
oil tank/storage room and gas connection
euro
2.000.00
1.300.00
Chimney
euro
2.000.00
2.000.00
2.000.00
Heat source system
euro
7.000.00
5.000.00
total
euro
18.250.00
24.250.00
20.450.00
19.150.00
19.450.00
21.550.00
3. Capital costs
Capital costs
euro
1.758.00
2.336.00
1.970.00
1.845.00
1.874.00
2.076.00
Maintenance
euro
183.00
243.00
205.00
192.00
195.00
216.00
total
euro
1.941.00
2.579.00
2.175.00
2.037.00
2.069.00
2.292.00
4. Operational costs
Maintenance
euro
150.00
150.00
250.00
Chimney sweep
euro
70.00
70.00
70.00
total
euro
220.00
220.00
320.00
5. Costs of consumption
Central heating
Annual energy demand
kwh
12.208
12.208
12.208
12.208
12.208
12.208
energy consumption, heating
kwh
3.391
2.831
2.650
13.149
11.954
13.841
energy consumption, booster heater
kwh
249
Annual auxiliary energy demand
kwh
200
400
400
200
200
200
DHw
Annual energy demand
kwh
2.920
2.920
2.920
2.920
2.920
2.920
energy consumption DHw
kwh
771
664
621
1.825
1.825
3.650
energy consumption, booster heater
kwh
146
solAr
energy yield
kwh
2.070
2.070
energy consumption solar
kwh
160
160
Results
total energy consumption
kwh/p.a.
4.757
3.895
3.672
15.334
14.139
17.691
emissions Co
2
in total
kg/p.a.
3.235
2.648
2.497
4.928
3.690
245
system energy costs
euro/p.a.
688.00
586.00
558.00
1.187.80
1.199.80
875.00
total system costs
euro/p.a.
2.629.00
3.165.00
2.733.00
3.444.80
3.488.80
3.487.00
Primary energy factor
2.7
2.7
2.7
1.1
1.1
0.2
Primary energy demand
kwh/p.a.
12.843
10.516
9.914
16.868
15.553
3.538
ExamplE: coSt calcUlatIon to vdI 2067
Содержание Heat pumps
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Страница 183: ...183 www stiebel eltron COM Accessories for heating heat pumps ...
Страница 234: ...234 www stiebel eltron COM WPF E mono mode without buffer cylinder WPF E mono mode with DHW heating ...
Страница 235: ...235 www stiebel eltron COM WPF E mono mode with low loss header WPF E mono mode with DHW heating and low loss header ...
Страница 247: ...247 www stiebel eltron COM DHW heat pumps ...