中文摘要：

建立了通用型除湿换热器测试平台,对两种翅片长度的除湿换热器（LDCHE和SDCHE）涂覆干燥剂前后的传热传质性能进行了测试研究。研究结果表明,与普通换热器相比,除湿换热器由于干燥剂涂层的影响,其传热能力削减30%,压降增加60%。其他结构尺寸不变,翅片长度增加一倍时,除湿换热器传热系数减少50%,除湿效果提高40%,压降增加80%,除湿与再生的能效比均降低。增加翅片长度能够强化除湿效果,但传热性能降低,增加能耗。

英文摘要：

In this study, a general-purpose test platform is built to test and compare the heat and mass transfer characteristics. Two heat exchangers of different length of fins conventional/desiccant coated （LDCHE and SDCHE） are experimentally investigated and compared with the heat and mass transfer characteristics. Experimental results show that compared with the conventional heat exchanger, the heat transfer capacity of DCHE is reduced by 30% because of the heat resistance produced by desiccant coating. Pressure drop and Euler number are both increased by 60% approx- imately for the same reason. Doubling the length of fins decreases the heat transfer coefficient by 50%, increases the average moisture removal by 40% and pressure drop by 80%, without changing the other structure parameters. The coefficient of dehumidification and regeneration performance both decrease with double length of fins. Long length of fins can increase the capacity of dehumidification, decrease the capacity of heat transfer, and increase energy consumption.