[1]王庚,张小松,陈瑶,等.陶瓷泡沫填料逆流直接蒸发冷却热质传递特性的实验研究[J].东南大学学报(自然科学版),2012,42(3):457-462.[doi:10.3969/j.issn.1001-0505.2012.03.012]
 Wang Geng,Zhang Xiaosong,Chen Yao,et al.Experimental study on heat and mass transfer characteristics in evaporative cooler with ceramic foam packings[J].Journal of Southeast University (Natural Science Edition),2012,42(3):457-462.[doi:10.3969/j.issn.1001-0505.2012.03.012]
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陶瓷泡沫填料逆流直接蒸发冷却热质传递特性的实验研究()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
42
期数:
2012年第3期
页码:
457-462
栏目:
能源与动力工程
出版日期:
2012-05-20

文章信息/Info

Title:
Experimental study on heat and mass transfer characteristics in evaporative cooler with ceramic foam packings
作者:
王庚 张小松 陈瑶 徐国英
东南大学能源与环境学院,南京 210096
Author(s):
Wang Geng Zhang Xiaosong Chen Yao Xu Guoying
School of Energy and Environment, Southeast University, Nanjing 210096, China
关键词:
氧化铝陶瓷泡沫 逆流 直接蒸发冷却 热质传递
Keywords:
alumina ceramic foam counter flow direct evaporative cooling heat and mass transfer
分类号:
TU831.6
DOI:
10.3969/j.issn.1001-0505.2012.03.012
摘要:
采用30 PPI的氧化铝(Al2O3)陶瓷泡沫块作为蒸发冷却器填料,在人工环境舱中进行了逆流直接蒸发冷却实验.着重研究了填料厚度、进口空气的干球温度、湿球温度以及空气流量对填料热质传递性能的影响.选用冷却效率和加湿量分别作为热传递和质传递性能的评价指标.实验结果表明,以氧化铝陶瓷泡沫为填料的直接蒸发冷却器,冷却效率最高可以达到0.88,出口空气的含湿量最大可以增加3.15 g/kg.当进口干球温度、进口湿球温度升高以及空气流量增大时,陶瓷泡沫的冷却效率都呈下降趋势.加湿量随着进口干球温度的升高而增加,但是随着进口湿球温度升高和空气流量增大而减少.在相同实验条件下,2层陶瓷泡沫的冷却效率、加湿量都高于1层的冷却效率和加湿量.
Abstract:
Alumina(Al2O3)ceramic foam blocks with a pore density of 30 PPI(pores per inch)were selected to be the direct evaporative cooling experimental wetted pad. Experiments were carried out in a psychrometric chamber with controllable air temperature and humidity. The effects of operating parameters, such as height of the packing, the dry-and wet-bulb temperature of inlet air, as well as mass flow ratio of water to air, on the heat and mass transfer performances were analyzed. Cooling efficiency and the humidity increment were chosen as the performance index. Experimental results show that a cooling efficiency of 0.88 and a water content increment of 3.15 g/kg can be achieved. The cooling efficiency of the packing decreases with the increasing inlet air dry-and wet-bulb temperature and the air flow rate. The water content increment rises with the increment of the inlet air dry-bulb temperature, but drops with wet-bulb temperature and the air flow rate. Both the cooling efficiency and the water content increment grow with the height of the packing.

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备注/Memo

备注/Memo:
作者简介: 王庚(1977—),男,博士生; 张小松(联系人),男,博士,教授,博士生导师,rachpe@seu.edu.cn.
基金项目: “十二五”国家科技支撑计划资助项目(2011BAJ03B00)、国家自然科学基金资助项目(51036001).
引文格式: 王庚,张小松,陈瑶,等.陶瓷泡沫填料逆流直接蒸发冷却热质传递特性的实验研究[J].东南大学学报:自然科学版,2012,42(3):457-462. [doi:10.3969/j.issn.1001-0505.2012.03.012]
更新日期/Last Update: 2012-05-20