Abstract
The air rate is universally over-sized in underground hydroelectric stations causing energy to be wasted. Therefore, it is necessary to determine the right design heat load of air conditioning. This paper presents an analysis of the heat absorption and heat emission of the building enclosure of LongTan underground hydroelectric station. The results show that the heat adsorption and heat emission of an underground hydroelectric station’s building enclosure must be considered when determining the design heat load of the generator hall and water turbine room; the contrary is true for the busbar chamber and transformer pit. Considering these factors can decrease the air supply rate and the capacity of the air-conditioning equipment, thus saving energy.
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