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摘要:
Efficient Air Conditioning (A/C) system is the key to reducing energy consumption in building operation. In order to decrease the energy consumption in an A/C system, a method to calculate the optimal tube row number of a direct expansion (DX) cooling coil for minimizing the entropy generation in the DX cooling which functioned as evaporator in the A/C system was developed. The optimal tube row numbers were determined based on the entropy generation minimization (EGM) approach. Parametric studies were conducted to demonstrate the application of the analytical calculation method. Optimal tube row number for different air mass flow rates, inlet air temperatures and sensible cooling loads were investigated. It was found that the optimal tube row number of a DX cooling coil was in the range of 5 - 9 under normal operating conditions. The optimal tube row number was less when the mass flow rate and inlet air temperature were increased. The tube row number increased when the sensible cooling load was increased. The exergy loss when using a non-optimal and optimal tube row numbers was compared to show the advantage of using the optimal tube row number. The decrease of exery loss ranged from around 24% to 70%. Therefore the new analytical method developed in this paper offers a good practice guide for the design of DX cooling coils for energy conservation.
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篇名 Optimisation of Direct Expansion (DX) Cooling Coils Aiming to Building Energy Efficiency
来源期刊 房屋建造与规划研究(英文) 学科 医学
关键词 Optimal Tube ROW Number ENTROPY Generation MINIMIZATION Direct Expansion (DX) COOLING COIL Building Energy Efficiency
年,卷(期) 2015,(2) 所属期刊栏目
研究方向 页码范围 47-59
页数 13页 分类号 R73
字数 语种
DOI
五维指标
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研究主题发展历程
节点文献
Optimal
Tube
ROW
Number
ENTROPY
Generation
MINIMIZATION
Direct
Expansion
(DX)
COOLING
COIL
Building
Energy
Efficiency
研究起点
研究来源
研究分支
研究去脉
引文网络交叉学科
相关学者/机构
期刊影响力
房屋建造与规划研究(英文)
季刊
2328-4889
武汉市江夏区汤逊湖北路38号光谷总部空间
出版文献量(篇)
127
总下载数(次)
0
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0
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