制冷并联机组的冬季冷凝压力调节  

Regulation of condensation pressure in winter for a refrigeration system with a parallel compressor unit

作　　者：刘群生 浮翔 马越峰 隋继学 

机构地区：[1]河南牧业经济学院能源与动力工程学院,郑州450011 [2]北京市京科伦冷冻设备有限公司,北京101302

出　　处：《低温与超导》2017年第11期68-72,91,共6页Cryogenics and Superconductivity

基　　金：2015年度河南省重点科技攻关项目(152102310332);2015年度河南省高等学校重点科研项目(15A470016)资助

摘　　要：制冷并联机组系统冬季易出现冷凝压力过低,弱化冷凝器的传热以减小冷凝器的换热量,即能防止冷凝压力过低。从工程应用出发,以使用空冷冷凝器的制冷系统为例,依照改变传热系数、传热面积和传热温差的思路,给出了防止冬季冷凝压力过低的技术措施,与此类似措施也可应用于采用水冷冷凝器或蒸发冷凝器的其他制冷系统。A refrigeration system using a parallel compressor unit will be prone to excessive low condensation pressure in winter. The heat transfer is weakened to reduce the heat exchange capacity of a condenser, which can prevent excessive low con- densation pressure excessive low. From the view of engineering practice, taking the refrigeration system with an air - cooled con- denser as an example, according to the idea of changing heat transfer coefficient, heat transfer area and heat transfer temperature difference, technical measures to prevent excessive low condensation pressure in winter were proposed. Similar measures could also be applied to other refrigeration systems using water - cooled or evaporative condensers.

关 键 词：制冷 并联机组 冬季 冷凝压力 过低 调节 空冷冷凝器 

分 类 号：TB65[一般工业技术—制冷工程]