PERFORMANCES OF A NEW GENERATION HIGH EFFICIENCYHEAT RECOVERY UNITS FOR DOMESTIC VENTILATION

摘要

In 1998 the Dutch ventilation industry launched a new generation of domestic ventilationsystems with high efficiency heat recovery on the market applying counter flow heatexchangers and DC fans. It is expected that these ventilation systems will play an importantrole in realising the goals of the Dutch national energy policy for reducing energy use in thebuilt environment. Another important aspect is the contribution to a healthy indoorenvironment in dwellings with an extreme high energy efficiency, specially in relation toincreasing air tightness and thermal insulation. First measurement results in practice show thatthese systems provide a good indoor environment regarding indoor air quality, thermalcomfort and noise. Energy losses for ventilation can be reduced by 8 to 10 GJ/year.