Measurement of Heat Loss from Hot Water Supply System in a Hotel and Insulation Retrofit

抄録

The heat loss was measured from a hot water supply system for a hotel in the Kansai area. The supply water is heated in a gas boiler, stored in a hot water tank. The temperature and flow rate of the hot water in the piping system were measured. More than 40% of the heat of the water was lost during circulation via the piping system. Additional thermal insulation was applied to the pipes and storage tank to examine the effect; the heat loss was significantly reduced.