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HEAT TRANSFER TUBE FOR AIR-COOLED ABSORPTION REFRIGERATING MACHINE AND ABSORBER
HEAT TRANSFER TUBE FOR AIR-COOLED ABSORPTION REFRIGERATING MACHINE AND ABSORBER
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机译：空冷吸收式制冷机和吸收器的传热管
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摘要
PROBLEM TO BE SOLVED: To enhance wettability of a heat transfer tube by forming a rough surface subjected to blasting on the inner surface of the heat transfer tube. SOLUTION: Absorbing solution (concentrated solution) being fed from a regenerator is passed through a solution distributing pipe 7 and sprayed from each spray nozzle 8 to the uppermost part 9 of the inner surface of a heat transfer tube 4. The sprayed solution flows down on the inner surface of each heat transfer tube 4 being roughened by blasting while absorbing refrigerant vapor being introduced from an evaporator into the heat transfer tube 4 through an upper header 2. After absorbing the refrigerant vapor, the absorbing solution (diluted solution) is collected in a lower header 3 and returned back to the regenerator. White fused alumina having grain size of #16 (JIS R6001) is employed as an abrasive material for blasting the inner surface of the heat transfer tube 4. Pressure of compression air is set at about 5 kg/cm2.
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机译：解决的问题：通过在传热管的内表面上形成喷砂的粗糙表面来提高传热管的润湿性。解决方案：从再生器中送出的吸收液（浓缩液）通过溶液分配管7，并从每个喷嘴8喷到传热管4内表面的最上部分9上。每个传热管4的内表面通过喷砂处理而粗糙化，同时吸收从蒸发器通过上部集管2引入到传热管4中的制冷剂蒸汽。吸收制冷剂蒸汽之后，将吸收溶液（稀释溶液）收集在较低的标头3并返回到再生器。使用粒度为＃16（JIS R6001）的白色熔融氧化铝作为对传热管4的内表面进行喷砂处理的研磨材料。压缩空气的压力设定为约5kg / cm 2。
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