
燃气技术GasTechnology doi:10.3969/j.issn.16715152.2014.03.003
旅馆建筑分布式能源系统的经济性分析
口同济大学机械与能源工程学院(201804)娄志标秦朝葵
要: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,分析摘
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。
关键词:天然气分布式能源系统旅馆微燃机烟气型澳冷机部分负荷
EconomicBenefitsofDistributedEnergySystemforHotels
Tong Ji University Lou Zhibiao, Qin Chaokui
Abstract: 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 microturbines has shortest payback period. Economic benefits for hot water priority turmed out to be better than chilling priority, under all the three DES configurations.
hotelmicroturbineflue gas absorption chiller
Keywords: Natural gasdistributed energy system
partload
1概述
天然气分布式能源系统(DistributedEnergy System,以下筒称DES)以微燃机、内燃机、燃气轮机等为原动机,发电的同时回收余热、进行综合利用"。与常规供能方式相比,DES的设备布置于终端用户处,传输损失少,可同时提供电力、热水、冷水等的生产、存储与转换23)。DES具有整体利用率高、
12|城市燃气·月刊万方数据
环保效果好等优点,在发达国家已获得广泛运用45]。反观国内,在关键设备的低成本化、综合利用技术的优化、电力部门的政策等方面均存在问题,在现有的电力并网政策和价格下,其广泛应用的前景尚不明朗,已建成并长期稳定使用的项目不多,且基本以研究示范为主(6.7]。
本文使用动态负荷软件对北京一个旅馆建筑进行逐时负荷模拟,统计了空调、采暖、电力、卫生热水