【摘要】 根据微燃机冷热电联供系统的工作流程,建立了以微燃机为中心的数学模型。通过改变微燃机回热度、温比、压比,分析了不同季节联供系统的系统效率、制冷或供热效率、微燃机发电效率、二次余热回收效率的变化;对影响联供系统一次能源节约率的因素进行了分析,找出了主要因素。对联供系统的火用效率和各部件的火用损失系数进行了计算,得出了系统节能的主要努力方向。更多还原

【Abstract】 According to work flow of the CCHP(combined cooling heat and power) system of micro-turbine,the mathematic model is established regarding micro-turbine as the key part of the system.The system efficiency,cooling or heating efficiency,residual heat efficiency on CCHP in different seasons are analyzed through changing heat recover ratio,temperature ratio and pressure ratio.The main factor which effects PES(primary energy saving) of CCHP is found.Finally,the energy saving way is gained with the calculating exergy efficiency and exegry lost coefficient of CCHP.更多还原