Thermodynamic Performance Enhancement of an Air Conditioner With Dew Point Evaporative Cooler
参考中译:采用露珠蒸发冷却器提高空调的热力性能


          

刊名：Journal of Engineering for Sustainable Buildings and Cities
作者：Sunil Kumar Gupta（Department of Mechanical Engineering, Delhi Technological University）
B. B. Arora（Department of Mechanical Engineering, Delhi Technological University）
Akhilesh Arora（Department of Mechanical Engineering, Delhi Technological University）
刊号：866B0136
ISSN：2642-6641
出版年：2024
年卷期：2024, vol.5, no.1
页码：014501-1--014501-9
总页数：9
分类号：TU98
关键词：Dew point evaporative cooler；Cooling load；Energy efficiency ratio；Energy saving；Air conditioner
参考中译：冰点蒸发冷却器;冷负荷;能效比;节能;空调
语种：eng
文摘：The vapor-compression-based conventional split air conditioners (CACs) consume a large portion of total electrical power and pose an alarming threat to global environment. The present work aims to reduce cooling load and power consumption of CAC by employing a dew point evaporative cooler (DPEC). DPEC consists of a counter flow type heat and mass exchanger with alternate layers of dry and wet channels. The intake air is sensibly cooled before entering the cooling room through the evaporator coil of the air conditioner. Also, the working air (a part of outlet air in dry channel), after absorbing sensible heat of intake air and water vapors from the wet channel surface, is allowed to pass across the condenser coils. The intake dry-bulb temperature (T_0= 29-44℃) and specific humidity (ω_0=6-22 g/kg) are taken as input parameters. While the cooled air entering the evaporator decreases the cooling load on the conditioned space, the compression work is also reduced due to increased heat transfer in the condenser. The maximum reductions in cooling load and monthly energy consumption at T_0=44℃ and ω_0=6 g/kg are found as 59.54% and 340 kWh, respectively. The water consumption for different months of the cooling season varies from 1037.8 L to 2905.95 L. The average energy savings with the DPEC system for hot-dry climate (from April to June) and hot-humid climate (from July to September) of New Delhi, India, are observed to be 479.6 kWh and 79.1 kWh, respectively. The proposed system is found to payback in about 3.37 years.
参考中译：以蒸汽压缩为基础的传统分体式空调机消耗了很大一部分电能，对全球环境构成了令人担忧的威胁。本工作旨在通过采用露点蒸发冷却器(DPEC)来降低CAC的冷负荷和能耗。DPEC由逆流型热质交换器组成，具有交替的干层和湿层通道。进气空气通过空调的蒸发器盘管进入冷却室前进行合理冷却。此外，工作空气(干通道中出口空气的一部分)在吸收来自湿通道表面的进气和水蒸气的显热后，被允许通过冷凝器盘管。输入参数为进气干球温度(T_0=29~44℃)和比湿度(ω_0=6~22 g/kg)。虽然进入蒸发器的冷却空气减少了空调空间上的冷负荷，但由于冷凝器内的热量增加，压缩功也减少了。在T_0=44℃和ω_0=6g/kg时，空调冷负荷和月能耗的最大降幅分别为59.54%和340kWh。降温季节不同月份的用水量从1037.8 L到2905.95 L不等。印度新德里干热气候(4~6月)和湿热气候(7~9月)的平均节能值分别为479.6千瓦时和79.1千瓦时。拟议的系统被发现在大约3.37年内就能收回成本。



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