Multifamily residence in Zoerle Parwijs

Zonnige Kempen, a social building development company, has built thirteen social dwellings at Zoerle Parwijs. They wanted to gain as much solar energy as possible for heating and hot water supply. That's why they chose to install a water-to-water heat pump, combined with ground storage, an asphalt collector and solar thermal collectors. This project received subsidies from the Flemisch governement as a demonstration project.

Project description

Building, overall energy concept

- Thirteen social dwellings

- Low temperature heating: floor heating

- Central heating and hot water production

- Photovoltaic installation

- Balanced ventilation with heat recovery

Heat pump system

- Electrical heat pump, water-to-water

- Heating capacity 45 kW

- BTES field (Borehole Thermal Energy Storage), 54 vertical heat exchangers

- Asphalt collector 500 m²

- Solar thermal collectors, flat plate type 75 m²

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Operation experiences

- Measurement campaign: This installation will be monitored over a period of one year.

- The monitoring results presented below focus on the first four months of operation in winter time (October 2007 - January 2008).

- In heating mode the heat pump covered 98 % of the daily heating load.

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Diagr. 1: Balance of energy input (geothermal, electrical) and energy output (useful heat) for the period October 2007 through January 2008

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 Diagr. 2: Balance of heat delivery from GSHP, thermal solar and gas-fired boiler for the period October 2007 through January 2008

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Diagr. 3: Primary energy savings by the use of a heat pump compared to a conventional heating system (gas-fired boiler)

Costs, economic efficiency, incentives

not available

Regulations, guidelines, benchmarking

not available

References

For more detailed information about the heat pump system and the asphalt collector click the following link:
Westerlo Zoerle-Parwijs Sint-Antoniusplein : 13 Low-energy dwellings
(click on "ENGINEERING TECHNIQUES")

¹ Total heat demand: 47.192 kWh
² Reduction of 8 % compared to reference