梯级降温除湿系统的变工况实验研究
摘要：蒸气压缩式除湿装置被广泛应用于小容量除湿场合，但其蒸发温度低于出风露点温度导致除湿装置运行效率不高。为提升能效，提出了一种采用非共沸制冷剂的新型除湿系统。该系统用一个单转子压缩机实现双蒸发温度和双冷凝温度。对不同工况下新型除湿系统和常规除湿系统的性能进行了实验研究，结果显示：与R134a常规除湿系统相比，采用R407C的新型除湿系统的单位功耗除湿量增大了4.3%～14.0%,采用R32/R1234ze(E)(30%/70%)的新型除湿系统的单位功耗除湿量增大了9.7%～27.2%。
关键词：除湿系统非共沸制冷剂单转子压缩机单位功耗除湿量双蒸发温度双冷凝温度
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参考文献参考文献
[1] LING J Z,KUWABARA O,HWANG Y,et al.Theoretical study on separate sensible and latent cooling air-conditioning system[J].International journal of refrigeration,2010,33:510-520.
[2] CAO X,ZHANG C L,ZHANG Z Y.Stepped pressure cycle:a new approach to Lorenz cycle[J].International journal of refrigeration,2017,74:283-294.
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[5] 米诺尔B H.包含四氟丙烯和二氟甲烷的制冷剂混合物及其用途：201380044384[P].2015-04-29.
[1] LING J Z,KUWABARA O,HWANG Y,et al.Theoretical study on separate sensible and latent cooling air-conditioning system[J].International journal of refrigeration,2010,33:510-520.
[2] CAO X,ZHANG C L,ZHANG Z Y.Stepped pressure cycle:a new approach to Lorenz cycle[J].International journal of refrigeration,2017,74:283-294.
[3] 刘春慧，张海峰，张蕾，等.双温双控压缩机开发[C]//中国家用电器技术大会论文集.宁波：中国家用电器协会，2016:732-737.
[4] LIU X R,LIANG X F,HUANG M Y.A novel dehumidification system using zeotropic refrigerants[C]//The 25th International Congress of Refrigeration.Montreal:International Institute of Refrigeration,2019:4077-4083.
[5] 米诺尔B H.包含四氟丙烯和二氟甲烷的制冷剂混合物及其用途：201380044384[P].2015-04-29.
Experimental investigation on stepped-cooling dehumidification system under variable conditions
Abstract: Vapor compression dehumidifiers are widely used in small-capacity dehumidification occasions, but their evaporating temperature is lower than the dew point temperature of supply air, resulting in low operating efficiency of the dehumidifier. To improve energy efficiency, a new dehumidification system using non-azeotropic refrigerant is proposed. The system uses a single rotor compressor to achieve dual evaporating and dual condensing temperatures. The performances of the new dehumidification system and the conventional dehumidification system under different working conditions are experimentally studied. The results show that compared with the R134 a conventional dehumidification system, the dehumidification capacity per unit power consumption of the new dehumidification system using R407 C is increased by 4.3% to 14.0%. The dehumidification capacity per unit power consumption of the new dehumidification system using R32/R1234 ze(E)(30%/70%) is increased by 9.7% to 27.2%.
Keywords: dehumidification system; non-azeotropic refrigerant; single rotor compressor; dehumidification capacity per unit power consumption; dual evaporating temperature; dual condensing temperature;
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