【摘要】 针对城市夏季热负荷需求较小集中供热资源闲置的问题,提出夏季利用城市热网驱动吸收式制冷机组的分布式供冷方式。采用一次能源节能率方法对比分析该种供冷方式与常规电制冷方式的能效差异;通过临界热价指出分布式吸收式供冷方式的经济性。深入分析了热电联产系统的发电效率和供热效率、全国平均发电效率、制冷机组的性能系数等因素对分布式供冷方式的节能性、经济性和适宜性的影响。研究表明城市热网夏季分布式供冷方式不具备明显的节能效益和较大的经济效益空间。同时指出与溶液除湿系统联合使用可以改善城市热网夏季分布式供冷方式的节能性和经济性。更多还原

【Abstract】 The distributed absorption cooling based on district heating system with CHP was researched to utilize the surplus heat from the cogeneration of heat and power(CHP) plant in summer.Compared with the electric compressor cooling,the energy efficiency and cost-effectiveness of the distributed absorption cooling were furthermore analyzed by the Fuel Energy Saving Ratio(FESR) method.Some effect factors such as the average electric efficiency,heating and electric efficiency of the CHP system and the coefficient of performance of the chiller were analyzed.The marginal heating price of the distributed absorption cooling can be obtained.According to the evaluation results,the applicability of the distributed cooling with district heating system is limited by the lower energy efficiency and economical efficiency.The distributed absorption cooling and liquid desiccant dehumidification which has higher heating utilization efficiency was put forward and analyzed.The evaluation results show that the new distributed cooling has higher energy efficiency and economical efficiency,and great applicability.更多还原