基于建筑保温层厚度的冷热电联供系统优化配置

Optimization configuration of a combined cooling, heating and power system based on building insulation layer thickness

中文关键词: 冷热电联供  建筑能耗  保温层厚度  优化  经济性

英文关键词: combined cooling, heating and power  building energy consumption  insulation layer thickness  optimization  economy

中文摘要:

      通过分析保温层厚度对建筑负荷的影响,设计了一种基于保温层厚度的冷热电联供系统设备容量优化匹配方法。针对北京地区某办公类建筑的冷热电联供系统进行经济性优化分析,确定最佳保温层厚度和各设备容量配置。结果表明,该建筑最佳保温层厚度为49 mm,燃气内燃机、余热补燃锅炉、吸收式制冷机和电压缩式制冷机容量分别为250、1085 、207 、451 kW。总费用年值随保温层厚度增加呈抛物线变化趋势,当保温层厚度为49 mm时,总费用年值达到最低。所得结论对未来建筑节能改造具有一定指导意义。

英文摘要:

      By analyzing the effects of building insulation layer thickness on building load, an optimization matching method for combined cooling heating and power allocation was proposed, which was based on the optimal building insulation layer thickness. In view of the cogeneration system for an office building in Beijing, the optimal insulation thickness and the configuration of each equipment capacity were determined by economic optimization analysis. The analysis results showt that the optimal insulation layer thickness of this building is 49 mm, the capacities of gas engine, the supplementary firing waste heat boiler, the absorption chiller, and the electric compressor refrigeration are 250 , 1085, 207and 451 kW, respectively. The annual cost shows as a parabolic variation as the insulation layer thickness increases. When the thickness of the insulation layer thickness reaches 49 mm, the annual cost is the lowest. It will be of guiding significance to the building energy saving in future.