新型太阳能连续型固体吸附制冷及供热复合机设计及性能模拟

DESIGN AND PERFORMANCE SIMULATION ON A NOVEL COMBI-SYSTEM WITH CONTINUOUS SOLAR SOLID ADSORPTION REFRIGERATION AND HEATING

该文提出了一种新型的太阳能连续型固体吸附制冷及供热复合机的设计方案 ,从理论上描述了该复合机的热力循环过程 ,并在正常工况下对该复合机进行了性能模拟分析。研究表明 :采用该种设计方案 ,复合系统能连续制冷 ,对于单一复合吸附床系统 ,在日辐射量为 2 1 6MJ,平均环境温度为 2 9 9℃ ,蒸发温度为 5℃ ,上床集热效率 η为 6 0 % ,下床与环境的换热系数α为 2W / (m2 ·K)的工况下 ,白天中能提供 4 7 8℃的热水 30kg ,系统平均制冷COPcooling为 0 18,平均供热COPheating为 0 34,吸附剂持续平均制冷功率SCPa 为 17 6W /kg ,集热面积持续平均制冷功率SCPc 为 87 8W /m2 ,集热面积持续平均供热功率SHPc 为 16 5 9W /m2 ;晚上每千克吸附剂制冷量为 0 2 6MJ ,每平方米集热面积制冷量为 1

In this paper, the design of a novel combi system with continuous solid adsorption refrigeration and heating was proposed.The computer simulation and analysis were made and the system's COP cooling , COP heating etc. are discussed.The simulation indicated that the system could work continuously,and under the conditions of the daily sun radiation 21 6MJ,the average ambient temperature 29 9℃, the evaporating temperature 5℃,the heat collecting coefficient of upper bed η is 60%,and the heat transfer coefficient of lower bed α is 2W/m 2·K.The combi system of single combined bed could provide 30kg hot water of 47 8℃,and has a mean COP cooling of 0 18,a mean COP heating of 0 34,a continuous mean SCP a of 17 6W/kg,a continuous mean SCP c of 87 8W/m 2,and a continuous mean SHP c of 165 9W/m 2;and at night it had a cooling capacity of 0 26MJ per kg of adsorbent,and a cooling capacity of 1 3MJ per m 2 of collecter area.