Installation manual

202
9.2
9.2 Energy Costs
9.2.1 Oil heating - monovalent heat pump heating system
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.
NOTE
Visit www.dimplex.de to use our annual performance factor calculator for
Dimplex heat pumps.
Heat requirement Heat requirement kW
Q
a in kW 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
Oil requirement Oil requirement Annual energy requirement: Qa l
in l/a a
*
Lower heating value Annual utilisation level
Lower heating value of oil = 10,08 kWh/l
Annuel utilisation level e.g. = 0,75
kWh
a
Monovalent Annual energy requirement Qa
operating mode Energy requirement HP kWh
in kWh/a a
Annual energy factor β
Cost calculation Oil costs l * € €
al a
Oil requirement Oil price
Power costs kWh* € €
heat pump a kWh a
Energy requirement Power price
heat pump
€€ €
aa a
Oil costs Power costs HP
Savings
=
=
=
=
=
=
10,08
==
=
kW
kW*
m²*
==
==