中文摘要：

冷热电联供系统（CCHP）是一种建立在能的梯级利用概念基础上,将制冷、供热及发电过程有机结合在一起的总能系统。为深入揭示三联供系统高效原因,本文将典型三联供系统与传统分供系统进行了比较,结果表明:与传统分供系统相比,联供系统能耗相对减少42％。通过对两种三联供方案的系统（火用）分析比较,揭示了冷热电联供系统能量转换的特点及基本规律,及合理评价三联供系统的评价准则。

英文摘要：

Combined Cooling, Heating and Power system (CCHP), which integrates power generation, cooling and heating, is a type of total energy system on the basis of energy cascade utilization principle. In this paper, in order to reveal internal essence of CCHP, we have analyzed typical CCHP systems and compared them with individual systems. Results indicate that CCHP brings 42 percent decrease in energy consumption comparing with the individual systems. Moreover, through exergy comparison for two kinds of CCHP syst...