Unit heat consumption of buildings in Finland

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Question

What is the unit heat consumption of different types of buildings in Finland?

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, 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
  • Ohjeet 2007
  • Ohjeet 2012

Dependencies

• Outdoor air temperature
• Indoor air temperature
• Buiding 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

Keywords

Building, heat consumption

Related files

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Unit heat consumption of buildings in Finland. Opasnet . [1]. Accessed 27 Apr 2025.