Building insulation is the most important factor when calculating energy loses or on the other hand energy needs for heating. Heating system must be aligned according to building energy loses. Here are my final numbers and calculations:
Building parameters:
- Building square meters (room surface): 180 square meters to heat
- Type of heating: ground heating
- Building walls: 30 cm brick and 10 cm isolation (glass wool)
- Building roof: wood structure with, 21 cm of isolation (glass wool), standard knauf
- Building ground floor (to the ground): 5 cm concrete, 8 cm isolation, 5 cm concrete, 40 cm sand layer
- Windows: thermo glass
Coefficients:
- Windows thermal transmittance: U=1,1W/m2K
- Glass wool thermal conductivity: 0,035 W/mK
Final calculation for heat pump system installation. We need:
- Heat pump with output power: 14kW + 6kW Optional Extra Heater for Extreme Low temperatures
- Geothermal vertical collector according to ground structure: 2x100m
- Water Heater: 300 liters
There were also other numbers and quite complicated parameters and calculations. I think shown numbers are enough to get an impression. I will put some calculations in PDF to this blog for download in near future.
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