Installation manual

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Investment and Operating Costs 9.2.2
9.2.2 Oil heating - mono energy heat pump heating systems
Heat consumption:
The heat consumption is normally calculated by the heating
system engineer (e.g. architect)
Annual performance factor:
This is dependent on the type of heat pump and the way it is
integrated in the heating system. An approximate calculation of
the annual performance factor can be made using the method
shown in Chap. 9.3 on p. 205.
Annual heat output:
The percentage covered by the heat pump (see Chap. 1 on p.
10) is primarily dependent on the selected bivalence point (e.g.
-5 ° C).
NOTE
Visit www.dimplex.de to use our annual performance factor calculator for
Dimplex heat pumps.
Heat requirement Heat requirement kW
Q
a in k
W
m²
Residential floor space Specific heat requirement
Specific heat requirement of Qh = 0,05 kW/m² (good insulation)
= 0,10 kW/m² (poor insulation)
Annual energy Annual energy requi- h kWh
requirement rement Qa in kWh/a a a
Heat requirement Annual full utilisation
hours
e.g. 2000 h/a
kWh
a
Annual energy requirement Qa
Oil requirement Oil requirement l
in l/a a
Lower heating value Annual utilisation level
Lower heating value of oil = 10,08 kWh/l e.g. = 0,75
kWh
Mono-energy a
operating mode Annual energy requirement Qa
Energy requirement HP kWh
in kwh/a a
Annual heating performance
Share of HP
Annual energy factor β
e.g. 97%
Additional electrical kWh
*
kWh
heating aa
Annual energy requirement 1 -fm (e.g. 1-0,97% = 3%)
(Part of additional electrical heating)
Cost calculation l € €
ala
Oil requirement Oil price
Power costs
kWh kWh € €
heat pump a a kWh a
Energy requirement Energy requirement Power price
heat pump additional heating
€€€
aaa
Oil costs Power costs HP
=
m
2
kW
Savings
=
kW
* =
* =
==
Oil costs
* =
*
* =
=
= *
+*
= - =
=