Assesment of Passive Cooling in Residential Application under Moderate Climate Conditions

In the face of environmental regulations, renewable energy systems are anticipated to become more attractive. Passive buildings may appear promising in terms of energy saving. The aim of the work is an investigation of energy effects of using radiative passive cooling. System analysed here bases on the radiative heat exchange with nocturnal sky. On every exposed surface, beyond the convection mechanism, a radiative heat exchange with the sky takes place. Analysis shows that passive cooling has a potential in cold production, however is sensitive to ambient conditions and that cold supply is inversely proportional to demands. Small value of average heat loss from the radiator makes the system independently unable to fulfil cooling demand, however may become an attractive, eco-friendly supplement to a conventional air-conditioner.