Unit heat consumption of buildings in Finland
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Question
What is the unit heat consumption (kWh/m2/year) of different types of buildings in Finland?
Answer
Rationale
Heat consumption of a building depends on the outdoor air temperature, preferred indoor air temperature, insulation, air tightness and surface area of the building envelope (walls, roof, floor, windows, doors), ventilation rate and heat recovery from the ventilated air, heating system (efficiency of heat production and recovery of lost heat), hot water demand, internal heat gains from people and electrical equipment, and external heat gains from the sun.
Models for calculating building heat consumption
- D5 Suomen rakentamismääräyskokoelma
Dependencies
- Outdoor air temperature
- Indoor air temperature
- Building envelope (walls, roof, floor, windows, doors)
- Insulation (heat conductance)
- Air tightness (involuntary air leakage)
- Air ventilation (rate, heat recovery)
- Heating system (heat production efficiency, recovery of lost heat)
- Internal heat gains (electrical equipment, people)
- External heat gains (sun)
- Hot water demand
Formula
See also
Keywords
Building, heat consumption
References
- ↑ Ympäristöministeriö 2007. Rakennuksen energiakulutuksen ja lämmitystehon tarpeen laskenta.. Ohjeet 2007. D5 Suomen rakentamismääräyskokoelma, Ympäristöminiteriö, Asunto- ja rakennusosasto.
- ↑ Ympäristöministeriö 2007. Rakennuksen energiakulutuksen ja lämmitystehon tarpeen laskenta.. Ohjeet 2007. D5 Suomen rakentamismääräyskokoelma, Ympäristöminiteriö, Asunto- ja rakennusosasto. Luonnos 28.9.2010
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