2016-01-11 14:48:52

冷库要合理调节冷库蒸发器并及时除霜
Cold storage to be reasonable and timely adjust the refrigerator evaporator defrosting
一般而言，冷库蒸发温度每提高1℃，可节能2~2.5。因此，在能够满足产品制冷工艺的前提下，可通过调整供液量，尽量提高蒸发温度。医药冷库
In general, the evaporation temperature refrigerator every increase 1 ℃, energy-saving 2 ~ 2.5. Therefore, under the premise that can satisfy the product cooling process, for fluid volume can be adjusted through, try to improve the evaporation temperature.
霜层的热阻一般比钢管的热阻大得多，当霜层厚度大于10mm时，其传热效率下降30以上。当管壁的内外温差为10℃、库温在-18℃时，排管蒸发器的制冷系统运行一个月后，其传热系数K值大约只有原来的70左右。
Frost layer thermal resistance of thermal resistance is much larger than steel tube, when the frost layer thickness is greater than 10 mm, its heat transfer efficiency is decreased by more than 30. When the tube wall temperature difference between inside and outside to 10 ℃ when - 18 ℃, libraries, temperature, discharge tube evaporator refrigeration system operation after a month, its heat transfer coefficient K value is only about 70 or so.
冷风机结霜特别严重时，不但热阻增大，而且空气的流动阻力增加，严重时将无法送风，所以要适时对蒸发器的表面进行除霜处理。
Air cooler frost particularly serious, not only the thermal resistance increases, and the air flow resistance increases, serious when will not be able to supply, so want to timely defrosting processing on the surface of the evaporator.
在大中型冷库的制冷系统中，一般采用热氨(氟)冲霜和水冲霜而不采用能耗高的电热融霜方式，而小型氟利昂制冷系统为简化管路，可采用电热融霜方式，但是应根据霜层融化所需的热量配置适宜的电热功率。

In large and medium-sized cold storage refrigeration system, generally USES the hot ammonia gas defrosting (CFC) and water gas defrosting without using electric defrost mode of high energy consumption, and small freon refrigeration system to simplify the line, can use electric defrost mode, but should be based on the heat of the frost layer melts the required configuration is suitable for electric power.

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