Calculating the load on the room cooling ceiling panel at solar heat gains

Abstract

It is known from the theory of heat exchange that for the assimilation of the room heat gains that are not constant in time, a cold flow of the same nature that assimilates them must be equal to them in magnitude. This is obvious with respect to convective heat gains that introduce directly into the air. The case is more difficult with the radiant heat gains, since the incoming radiant flow can be directed to one surface, and the assimilating one comes from another. The article aims to check to what extent this provision plays a role in the realities of maintaining a given room microclimate. However, in engineering practice, there are no purely radiant heat assimilating systems. Therefore, as a room cooling system, a ceiling cooling panel has been used, the heat flow from which is of a radiant-convective nature. The radiant load of the room occurred from the solar radiation, penetrating through the windows of various orientations on the cardinal directions. Determination of the load on the cooling system was performed by calculation. Based on the results of the calculation, it was found that the load on the ceiling panel significantly depends on the internal heat stability of the room.