冷库内制冷量测量方法的实验研究

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英文篇名：Experimental study on measurement method of refrigerant volume in cold storage 作者：王猛 ; 臧润清 ; 冯海 英文作者：Wang Meng;Zang Runqing;Feng Hai;Tianjin Key Laboratory of Refrigeration Technology,Refrigeration Engineering Research Center of Ministry of Education of People's Republic of China,Tianjin Refrigeration Engineering Technology Center,Tianjin University of Commerce; 关键词：冷库 ; 实验研究 ; 制冷量 英文关键词：Cold storage;;Experimental research;;Cooling capacity 中文刊名：DWYC 英文刊名：Cryogenics & Superconductivity 机构：天津市制冷技术重点实验室冷冻冷藏技术教育部工程研究中心天津市制冷技术工程中心天津商业大学; 出版日期：2018-09-06 19:03 出版单位：低温与超导 年：2018 期：v.46 语种：中文; 页：DWYC201808018 页数：4 CN：08 ISSN：34-1059/O4 分类号：95-98

摘要

制冷量是评价制冷系统性能好坏的重要指标,对于冷库系统制冷量的测量也是十分重要的。为了探究系统制冷量的测量方法,首先采用实验与理论结合的方法计算出冷库系统的热容值,再通过库温的变化曲率及热平衡关系式,计算出该制冷机组在不同库温下的制冷量。这种方法的优势在于对测试设备的要求较低,能够得到制冷量的连续变化曲线。对于冷库热容的计算,介绍了三种计算方法。对于库温为-20℃时,计算得到的冷库系统内热容值为368000W/℃,而实验测得的冷库系统内热容值为371000W/℃。
        The cooling capacity is an important index to evaluate the performance of the refrigeration system,and it is also very important for the measurement of the refrigerating capacity of the cold storage system. In order to explore the measurement method of the system refrigeration capacity,the heat capacity of the cold storage system was calculated by the combination of experiment and theory. Through the change of curvature and thermal balance temperature,the cooling capacity was calculated at different temperatures under the refrigeration unit. The advantage of this method is that the requirement of the test equipment is low,and the continuous change curve of the cooling capacity can be obtained. Three calculation methods were introduced for the calculation of heat capacity of cold storage. When the temperature of the cold storage was-20℃,the internal heat capacity of the calculated cold storage system was 368000 W/℃,and the internal heat capacity of the experimental cold storage system was 371000 W/℃.

引文

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