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介紹冷庫隔熱層的相關設計知識：
Introduction of cold storage insulation design knowledge:
由于冷庫的庫外溫度終年高于庫內，庫外的水蒸氣壓力高于庫內，通過圍護結構的滲透終年由外向內進行。
Libraries outside temperature due to cold storage at the age of higher than that of the rolls, water vapor pressure is higher than outside the library of the rolls, penetration through the palisade structure at the age of outside-in.
聚氨脂中的R11氣體被空氣和水蒸氣置換，使聚氨脂受潮。食品冷庫
Polyurethane R11 gas in the air and water vapour displacement, get together ammoniac fat be affected with damp be affected with damp.
日積月累，受潮越來越重，甚至出現水蒸氣凝結，使導熱系增大，熱阻降低，冷庫內的冷量損耗增大。
Accumulate over a long period, be affected with damp be affected with damp is getting heavier and heavier, appear even water vapor condensation, leads to increasing series of thermal conductivity and thermal resistance is reduced, the cold cold storage within the loss increased.
為避免和延緩聚氨脂受潮，延長絕熱層壽命，有效的方法是在絕熱層的熱側作密封處理，也就是形成隔汽層。
To avoid and delay the polyurethane be affected with damp be affected with damp, prolong the life of insulation blanket, effective methods are on the hot side of the thermal barrier sealing treatment, is the formation of vapour layer.
對土建框架結構的冷庫而言，專門用瀝青和油氈做隔汽層，工期長、造價高，且施工復雜。
For civil engineering structure of cold storage, specially make steam insulation layer with asphalt and asphalt felt, long construction period, high cost, and construction of complex.
簡單的辦法是對聚氨脂的現場發泡工藝提出具體的規范，利用聚氨脂現場發泡的表現光滑、堅韌且密封效果好的特點。
Simple solution is to the scene of polyurethane foam process put forward concrete specification, using the performance of polyurethane foamed smooth, toughness and good sealing effect.
要求現場發泡時先在墻面上發出薄薄的一層，要求表面光滑無孔隙，然后在此基礎上分層發泡，人為地形成多個密封層，有助于延長聚氨脂壽命。

Foam on site with a thin layer on metope, smooth surface, no pore, and then on the basis of the layered foaming, artificially formed multiple sealing layer, helps to extend the life of the polyurethane.

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