Abstract
The purpose of HVAC systems is to provide a comfortable environment and set the conditions for efficient work. The enhancement of buildings´ energy performance puts emphasis on meeting the comfort requirements indoors, as the acceptable environments have to be provided from less energy. The comfort of occupants is determined by the heat exchange between his body and his indoor environment. Even if whole body thermal comfort is accomplished there may be local areas on the body where sensation of discomfort may arise. The paper contains the results of a human subject experiment that was carried out to study the combined effect of two, simultaneously present local discomfort parameters, namely radiant temperature asymmetry and warm feet. Results showed that local discomfort caused by warm feet was not present or was out ruled by the radiation from the cold wall surface.
Highlights
The purpose of HVAC systems, along with the construction of the building is to provide a comfortable environment and set the conditions for efficient work
It was hypothesized as well that radiant temperature asymmetry caused by the cold wall surface will overrule the sensation of warm feet caused by floor heating
5 Discussion It was hypothesized in this study that radiant temperature asymmetry caused by the cold wall surface will overrule the sensation of warm feet caused by floor heating
Summary
The purpose of HVAC systems, along with the construction of the building is to provide a comfortable environment and set the conditions for efficient work. The systems have to fulfil this requirement by using less energy and emitting fewer pollutants to the environment. In Europe, the energy demand of building operation takes 40% of the primary energy use. EU has put emphasis on reducing the energy use of buildings, and set requirements that member countries have to accomplish [1]. It is important that while energy consumption should be reduced desired indoor comfort is maintained. This principle requires further investigation and modelling of comfort conditions
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