风速与压缩机频率对两种回路蒸发盘管换热除湿性能影响的实验研究  

Experimental Study on the Effects of Wind Speed and Compressor Frequency on the Heat Transfer and Dehumidification Performance of Two Kinds of Loop Evaporation Coil

作　　者：王顺亮 裴清清[1,2] 王四海 WANG Shunliang;PEI Qingqing;WANG Sihai(School of Civil Engineering,Guangzhou University,Guangzhou 510006f China;Guangdong Province New Air Conditioning System Energy Conservation Engineering Technology Research Centert Guangzhou 511400,China;Guangzhou Tongfang Ruifeng Energy Saving Technology Co.,LTD,Foshan 528000,China)

机构地区：[1]广州大学土木工程学院,广州510006 [2]广东省新型空调系统节能工程技术研究中心,广州511400 [3]广州同方瑞风节能科技股份有限公司,佛山528000

出　　处：《制冷》2022年第4期44-50,共7页Refrigeration

摘　　要：通过对翅片管换热器流程与回路设计的研究,本文提出了一组6排管全逆流蒸发盘管流程与回路的改进方案,即并联型先顺后逆流蒸发盘管,利用焓差实验室测试了两组蒸发盘管在不同工况下的换热和除湿特性并进行了对比分析。结果表明:在相同迎面风速和压缩机频率下,并联型先顺后逆蒸发盘管流程与回路设计更有利于换热除湿,但同时空气侧压降增大。在相同压缩机频率下,随着迎面风速的增加,并联型先顺后逆蒸发盘管比全逆流蒸发盘管换热性能的提升较大,除湿性能的提升较小;两组蒸发盘管运行时迎面风速不得超过2.8 m/s。压缩机频率越大,两组蒸发盘管随迎面风速增加换热性能的提升越小,除湿性能的提升略有增大。在相同迎面风速下,随着压缩机频率的增加,并联型先顺后逆蒸发盘管比全逆流蒸发盘管的换热和除湿性能提升的更快,更适合在高压缩机频率下运行。Based on the research on the flow and circuit design of finned tube heat exchanger, this paper puts forward an improved scheme of a group of 6-Row tube full countercurrent evaporation coil refrigeration circuit, that is, parallel type first forward and then countercurrent evaporation coil, the heat transfer and dehumidification characteristics of two groups of coils under different conditions were tested and compared by enthalpy difference laboratory. The results show that under the same head-on wind speed and compressor frequency, the flow and circuit design of parallel forward then reverse evaporation coil is more conducive to heat exchange and dehumidification, but at the same time, the pressure drop on the air side increases. Under the same compressor frequency, with the increase of head-on wind speed,compared with the full countercurrent evaporation coil, the parallel first forward then reverse evaporation coil increases the heat transfer performance and weakens the dehumidification performance;the head-on wind speed of the two groups of coils shall not exceed 2.8m/s. The higher the compressor frequency, the smaller the improvement of heat transfer performance of the two groups of evaporation coils with the increase of head-on wind speed, and the improvement of dehumidification performance increases slightly. Under the same head-on wind speed, with the increase of compressor frequency, the parallel first forward then reverse evaporation coil improves the heat exchange and dehumidification performance faster than the full countercurrent evaporation coil, and is more suitable for operation at the frequency of high-pressure compressor.

关 键 词：蒸发盘管 流程与回路 迎面风速 压缩机频率 换热和除湿性能 

分 类 号：TU83[建筑科学—供热、供燃气、通风及空调工程]