北京市南苑蔬菜冷库共有五十三间库房,全部为高温库。为适应客户的需要,一九八八年初,投资五万元,将原有的一间100m~2的高温库改造成容量为90t,热负荷为28800MT,温度为-18℃的低温库。考虑冷库目前已有两座机房、两套单独的制冷系统运行,为了减轻操作工人工作量,提高机房自动化水平,决定采用加压供液循环自动控制运行。 Beijing Nanyuan vegetable cold storage a total of 53 warehouses, all for high temperature storage. In order to meet the needs of customers, in early 1988, the company invested 50,000 yuan to transform the existing 100m ~ 2 high-temperature bank into a low-temperature bank with a capacity of 90t, a thermal load of 28800MT and a temperature of -18 ℃. Considering the cold storage has two machine rooms, two separate refrigeration system operation, in order to reduce the workload of workers, improve the level of automation room, decided to use pressurized liquid supply loop automatic control operation.