CAJ | 학술논문

实验研究了湿空气在泡沫金属内流动析湿过程的传热传质特性，得出了不同因素的影响规律。研究结果表明，随着入口空气相对湿度、温度和速度的增加，总换热量增加，且空气温度的影响比较明显；当入口空气温度由25℃增大到35℃时，换热量最大可增加82%；随着冷却水温度升高，潜热和显热换热量均减小，且潜热换热量降低幅度更大。与同体积的开窗翅片管式换热器相比，析湿工况下泡沫金属换热器内的湿空气换热量提高40%~112%。1
실험연구료습공기재포말금속내류동석습과정적전열전질특성，득출료불동인소적영향규률。연구결과표명，수착입구공기상대습도、온도화속도적증가，총환열량증가，차공기온도적영향비교명현；당입구공기온도유25℃증대도35℃시，환열량최대가증가82%；수착냉각수온도승고，잠열화현열환열량균감소，차잠열환열량강저폭도경대。여동체적적개창시편관식환열기상비，석습공황하포말금속환열기내적습공기환열량제고40%~112%。1
The heat transfer characteristics of moist air in metal foam during flow and dehumidification processes were investigated experimentally, and the influence principles of different factors were obtained. The results show that, the total heat transfer rate increases with the increasing inlet air relative humidity, temperature and velocity, and the influence of air temperature is more noticeable than that of the other factors; as the air temperature increases from 25℃to 35℃, the total heat transfer increases by 82%;the latent and sensible heat transfer rates decrease with the increasing cooling water temperature, and the latent heat transfer has much greater deterioration. Compared to louvered fin and tube heat exchanger, metal foam heat exchanger with the same volume can enhance heat transfer capacity by 40%~112%under the dehumidifying conditions.