We researched how satisfactory natural ventilation during the night is in order to achieve adequate thermal comfort of a stand alone house in the summer and on what it depends. We measured air temperature and relative humidity in a some places in the building during the time span of a few most hot months. Based on results of those measuring devices we found it to be dependent on room orientation, which floor it is in and type of used building materials. In some rooms natural cooling is not enough for optimal thermal comfort and there we need mechanical cooling.
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