Impact of intermittent heating modes on thermal comfort and energy consumption in large-space industrial buildings

Taking a large-space industrial building in Tianjin as an example,this paper investigates the impact of intermittent heating modes on the indoor thermal environment and energy consumption of industrial buildings.The TRNSYS software is used to simulate the indoor air temperature,wall temperature,PMV (predicted mean vote),and energy consumption changes under four intermittent heating modes on the coldest day.The results show that the heating duration has a significant impact on the minimum indoor air temperature and thermal comfort.The longer the heating duration,the higher the minimum indoor air temperature,and the higher the proportion of PMV in the first level thermal comfort zone.Under the same heating duration,compared with the continuous heating mode,the energy-saving rates of the four intermittent heating modes are 44.1%,37.0%,30.6%,and 27.8%,respectively.The research results can provide references for the energy-saving design of industrial building heating systems.