2017-05-16 11:40:25

为什么冷库库温下降慢：
Why cold storage is slowing down:
1、蒸发器表面结霜太厚或积尘过多，传热效果下降。
1, the surface of evaporator is too thick or too dusty, the heat transfer effect decreases.
导致冷库温度下降缓慢的另一重要原因是蒸发器传热效率低，这主要是由于蒸发器表面霜层过厚或积尘过多引起的。由于冷库蒸发器的表面温度大多低于0℃，而库房湿度相对较高，空气中的水分极易在蒸发器表面结霜，甚至结冰，影响蒸发器的传热效果。为防止蒸发器的表面霜层过厚，需定期对其进行除霜。
Another important reason for the slow led to the decrease of the cold storage temperature evaporator heat transfer efficiency is low, this is mainly due to the too thickness of evaporator surface frost layer or dust caused by too much. Because of the cold storage most of the surface temperature of the evaporator is lower than 0 ℃, relative humidity and warehouse is higher, the moisture in the air extremely easy in the evaporator surface frost, ice, even influence the effect of heat transfer in the evaporator. In order to prevent the surface frost layer of evaporator from overthick, it needs to be defrosted on a regular basis.
2、冷库由于隔热或密封性能差，导致冷量损耗大。
Cold storage is caused by poor insulation or poor seal performance.
隔热性能差是由于管道、库房隔热墙等的保温层厚度不够，隔热和保温效果不良，它主要是设计时保温层厚度选择不当或施工时保温材料质量差所导致的。另外，在施工使用过程中，保温材料的保温防潮性能有可能被破坏导致保温层受潮、变形，甚至糜烂，其隔热保温能力下降，库防冷量损耗随之增大，库温下降明显减缓。
Poor heat insulation performance is due to pipe, such as the warehouse heat insulation wall insulation layer thickness is not enough, heat insulation and heat preservation effect is bad, it is mainly the design when choosing improper or construction of insulation layer thickness of heat preservation material as a result of poor quality. In addition, in the construction, in use process of insulation materials insulation moistureproof performance is likely to be damage to insulation layer be affected with damp be affected with damp, deformation, erosion, and even the loss of heat insulation, library cold energy loss increase, library temperature slowed down significantly.
导致冷损耗大的另一重要原因是库房密封性能差，有较多的热空气从漏气处侵入库房。一般若在库房门的密封条或冷库隔热壁密封处出现了结露现象，则说明该处密封不严密。
Another important reason for the high cooling loss is the poor sealing performance of the warehouse, which has more hot air to enter the storage room from the leakage. It is indicated that the sealing of the seal in the sealing bar of the warehouse door or the insulation wall of the freezer is not tight.
另外，频繁开关库房门或较多的人一起进入库房，也会加大库房冷量损耗。应尽量避免打开库门，防止大量热空气进入库房。当然，库房进存货频繁或进货量太大时，热负荷急剧增大，要降温至规定温度一般需要较长时间。
In addition, frequent switch storehouse door or more person enter the warehouse, also can increase the store cold quantity loss. Try to avoid opening the library door and prevent a lot of hot air from entering the warehouse. Of course, when the warehouse enters the inventory frequently or the quantity is too big, the heat load increases sharply, to cool to the regulation temperature normally takes a long time.

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