冷庫要合理調(diào)節(jié)冷庫蒸發(fā)器并及時除霜
Cold storage to be reasonable and timely adjust the refrigerator evaporator defrosting
一般而言，冷庫蒸發(fā)溫度每提高1℃，可節(jié)能2~2.5。因此，在能夠滿足產(chǎn)品制冷工藝的前提下，可通過調(diào)整供液量，盡量提高蒸發(fā)溫度。
醫(yī)藥冷庫
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.
霜層的熱阻一般比鋼管的熱阻大得多，當(dāng)霜層厚度大于10mm時，其傳熱效率下降30以上。當(dāng)管壁的內(nèi)外溫差為10℃、庫溫在-18℃時，排管蒸發(fā)器的制冷系統(tǒng)運(yùn)行一個月后，其傳熱系數(shù)K值大約只有原來的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.
冷風(fēng)機(jī)結(jié)霜特別嚴(yán)重時，不但熱阻增大，而且空氣的流動阻力增加，嚴(yán)重時將無法送風(fēng)，所以要適時對蒸發(fā)器的表面進(jìn)行除霜處理。
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.
在大中型冷庫的制冷系統(tǒng)中，一般采用熱氨(氟)沖霜和水沖霜而不采用能耗高的電熱融霜方式，而小型氟利昂制冷系統(tǒng)為簡化管路，可采用電熱融霜方式，但是應(yīng)根據(jù)霜層融化所需的熱量配置適宜的電熱功率。
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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