旅馆建筑分布式能源系统的经济性分析

使用动态负荷软件对北京的一个旅馆建筑计算了逐时电力、采暖、制冷、卫生热水负荷,分析了负荷特性并与国内外的负荷指标进行对比。为该建筑配置了6种天然气分布式能源方案和1个传统供能方案,计算了对应的年运行费用与设备初投资;通过经济性分析,得出结论:传统方案初投资比分布式能源系统方案低,但运行费用较高。微燃机配置为2台C65时投资回收期最短。在3种微燃机配置情况下,余热优先供热比制冷的经济性要好。

Economic Benefits of Distributed Energy System for Hotels

Hourly electricity, heating, cooling and water demand were calculated for a hotel in Beijing. Resultant designing indexes were compared with some recommended values. 6 set of DES （Distributed Energy System） schemes and 1 conventional scheme were configured for the target building. Annual operation costs and initial costs for the proposed 7 schemes were calculated according to hourly demands. Economic analyses show that conventional scheme has a lower initial cost and a higher operation cost, and DES scheme incorporating 2 sets of C65 micro-turbines has shortest pay-back period. Economic benefits for hot water priority turned out to be better than chilling priority, under all the three DES configurations.