一种新型太阳能喷射式电热(冷)联供系统的热力性能及经济性分析

Thermo Dynamic Performance and Economic Analysis of a New Type of Solar Jet Co-supply System for Combined Heating or Cooling and Power

提出了一种新型的太阳能喷射式电热(冷)联供系统,该系统基于有机工质朗肯循环和喷射式制冷循环,利用太阳能光热,通过简单阀门切换实现电冷联供和电热联供。针对西北地区冬季/夏季典型太阳辐照强度,计算系统发电功率和制热(冷)功率,研究了系统的发电供热(制冷)能力,并从经济性方面进行系统性分析。结果表明:在西北地区太阳辐照强度条件下,该系统能独立满足建筑物的日常用电和供热(制冷)需求;在夏季,最大发电功率为5.42 kW,最大制冷功率为7.26 kW;在冬季,最大制热功率为2.96 kW;系统的电力生产成本为0.755元/(kW·h),相比其他发电系统,在保证低成本的同时,该系统环保可靠且具备供热(制冷)功能。

A new type of solar jet co-supply system for heating or cooling and power was proposed on basis of organic Rankine cycle and jet refrigeration cycle,via utilization of concentrating solar power,combined heating or cooling and power could be realized through simple valve switching.According to the typical solar radiation intensity in winter and summer in Northwest China,the capacity of power generation,heating or cooling supply were calculated,then the capacity of co-supply of heating or cooling and power for the system was studied while economic analysis was conducted systematically.Results show that under the condition of solar radiation intensity in Northwest China,the system can independently meet the requirements of daily power and heating or cooling of a building.The maximum capacity of power generation and cooling supply is 5.42 kW and 7.26 kW in summer while the maximum heating supply is 2.96 kW in winter.The whole cost of power generation for the system is 0.755 yuan/(kW·h).Compared with other power generation systems,the system has a better performance of low cost,environmental protection,reliability and function of co-supply of heating or cooling and power.