D. Schmidt - KTH Division of Building Technology
IEA ANNEX 37
Low Exergy Systems for Heating and Cooling of Buildings
Demonstration project
Katrineholm, Sweden
from IEA Annex 25
D. Schmidt - KTH Division of Building Technology
Villa in Katrineholm
D. Schmidt - KTH Division of Building Technology
Building facts
• Hand-over: 1938
• Retrofit: 1999
• Surface Area: 190 m²
• Ground source heat pump 83m
• Floorheating and radiators
• Fan coil unit for cooling
D. Schmidt - KTH Division of Building Technology
Installation scheme
S U B
Heat Pump
Condenser
Radiator
Domestic Hot Water Fan Coil Unit
Evaporator DHW Container
Aux el heater AC
m
m
3 way valve Compressor
RTD element (PT 100) Magnetic flowmeter Flow direction
Floorheating in return line
