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由本省设计院设计的我厂制冷系统选用了北京冷冻机厂生产的WNA-106型卧式冷凝器三台,制冷系统投入运行一段时间后发现冷凝温度不断升高,有时甚至高达39℃～40℃,冷凝压力也升高至1.51～1.55MPa,由于冷凝压力升高,排气温度常高达145℃～150℃,因而使得压缩机常常不得不停机,严重影响了制冷系统正常运行。再过一段时间,冷凝器管壁面竟然多处多次出现破裂穿孔并产生了漏气现象。针对上述问题进行了分析研究,对冷凝温度不断升高的现象,在排除了冷凝器内供水量不足,冷却水分布不均匀,冷凝器设计传热面积太小、冷凝器中有积液、制冷系统中制冷剂
The design of our factory by the province’s refrigeration system selected by the Beijing Refrigeration Factory WNA-106 horizontal condenser three, the refrigeration system put into operation for a period of time and found that condensing temperature rising, and sometimes even as high as 39 ℃ ~ 40 ℃, the condensing pressure is also increased to 1.51 ~ 1.55MPa, the condensing pressure increases, the exhaust temperature is often as high as 145 ℃ ~ 150 ℃, making the compressor often have to shut down, seriously affecting the normal operation of the refrigeration system. After a while, the condenser tube wall surface even appeared many times and perforation rupture and caused a leak phenomenon. In view of the above problems were analyzed and studied, the phenomenon of rising condensing temperature, excluding the lack of water supply in the condenser, the uneven distribution of cooling water, the condenser design heat transfer area is too small, condenser effusion, refrigeration Refrigerant in the system