种植屋面在中国4种典型气候区的能耗模拟研究

Simulation study on energy consumption of planting roofs in four typical climatic regions of China

采用EnergyPlus能耗模拟软件模拟在长春、北京、长沙和广州4个气候区种植屋面的全年逐时能耗,研究不同气候区土壤厚度和屋面隔热的变化对供冷供热能耗和种植屋面节能率的影响.结果表明,4个城市全年能耗的最小情况为土壤厚度=0.3m,屋面隔热材料采用30mm挤塑聚苯板;土壤厚度和屋面隔热有利于减少4个城市的供热能耗;在长春、北京和长沙,土壤越薄且无隔热材料的屋面组合供冷能耗最小;在广州,土壤越厚且隔热材料越厚的屋面组合供冷能耗最小.

This paper uses EnergyPlus energy consumption simulation software to simulate the annual hourly energy consumption of planting roofs in the four climate zones of Changchun,Beijing,Changsha,and Guangzhou,and it studies the effects of changes in soil thickness and roof insulation in different climate zones on cooling and heating energy consumption and energy saving rate of planting roofs.The results show that the minimum annual energy consumption of the four cities is that the soil thickness is 0.3 m and the roof thermal insulation material is 30 mm extruded polystyrene board,and the soil thickness and roof thermal insulation are beneficial to reduce the heating energy consumption of the four cities.In Changchun,Beijing and Changsha,the cooling energy consumption of the roof combination with thinner soil and no thermal insulation material is the lowest,while in Guangzhou,the cooling energy consumption of the roof combination with thicker soil and thicker heat insulation material is the lowest.