热泵供热系统设计改造及分析与经济分析
Exergy and economic analysis for a retrofitted heat pump heating system
摘要：
传统集中供热系统一次网输送能力不足，导致管道投资大，供热距离受到限制。提出了一种改进的发电厂热泵供热系统方案，减少了供热管道成本和系统的不可逆损失。应用Cycle-Tempo软件模拟了该系统的热力性能，并与传统分布式电压缩热泵系统和集中吸收式热泵系统的模拟结果进行了对比。结果表明：改进系统总效率为37.037%，比传统分布式电压缩热泵系统和集中吸收式热泵系统的效率分别提高了11.62%和14.84%；在1~20 km的供热距离内，改进方案的供热总成本最小。
Abstract：
In the traditional central heating system, low heat transfer capacity results in a large investment of pipe, which limits the heating distance. Presents a retrofitted heat pump heating system to reduce the investment of pipe and irreversible loss of the system. Simulates the thermal performance of this system with Cycle-Tempo soft, and compares the simulation result with those of traditional distributed electric compression heat pump system and central absorption type heat pump system. The results show that the total exergy efficiency of the retrofitted system is 37.037%, which is higher than that of two traditional heat pump heating systems by 11.62% and 14.84% respectively. The total heating cost of the retrofitted system is always minimal when heating distance in the range of 1 to 20 km.
Keywords:heat pump heating system, retrofit, distributed electric compression heat pump, central absorption type heat pump, exergy analysis, economic analysis