对氨/水工质吸收式制冷机盘管式换热器的传热性能进行了实验研究。详细研究了溶液流量对传热系数的影响。为了了解吸收对传热的影响，还进行了没有吸收现象的实验。结果表明，在实验范围内，有吸收和无吸收的降膜传热系数均随溶液流速线性增加。有吸收的传热系数比无吸收的传热系数小。 传热系数降低的一个原因似乎是液-汽界面剪切力引起的液膜分布不均匀或停滞。局部薄膜过厚和表面润湿不足会导致传热系数降低。在这个实验中，很难清楚地解释驱动压差对传热系数的影响。本研究得到的无量纲Nu-Re关系可用于确定盘管式换热器的尺寸。单位:SICitation:研讨会，ASHRAE交易，1998年，第104卷，pt。 1A，旧金山

The heat transfer performance of a coiled tube heat exchanger for absorption refrigerators with the working pair of ammonia/water was experimentally studied. The effects of solution flow rate on the heat transfer coefficient was investigated in detail. To understand the effect of absorption on heat transfer, experiments without absorption phenomena were also carried out. It has been shown that the heat transfer coefficient of falling film, both with and without absorption, increases linearly to the solution flow rate in the experimental range. A heat transfer coefficient with absorption was found to be smaller than that without absorption. One reason for the reduction in the heat transfer coefficient seems to be uneven distribution or stagnation of liquid film caused by shear force at the liquid-vapor interface. Locally too-thick film and insufficient wetting of the surface result in a reduction in the heat transfer coefficient. In this experiment, it was difficult to explain clearly the effect of the driving pressure difference on the heat transfer coefficient. A nondimensional Nu-Re relation obtained from this study can be applied for sizing coiled tube heat exchangers.Units: SI