Exergy analysis of an enhanced solar pond

4th International Conference on Energy Equipment Science and Engineering

Wudan, W.^1^3 ; Liuhongsheng^2 ; Wangweiwei, W.^3

Yingkou Institute of Technology, Yingkou

115000, China^1

Key Laboratory of Ocean Energy Utilization and Energy Conservation, Ministry of Education, Dalian University of Technology, Dalian

116024, China^2

760th Research Institute of China Shipbuilding Industry Corporation Dalian, 116013, China^3

关键词: Convective zone;    Exergy Analysis;    Exergy efficiencies;    First law of thermodynamics;    Heat extraction;    Lower convective zones;    Nonconvective zone;    Salty water;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/242/2/022013/pdf
DOI  :  10.1088/1755-1315/242/2/022013

来源: IOP

【 摘 要 】

In this paper we present an investigation of the exergy performance of a mini trapezoidal solar pond (surface of 5.76 m2 and depth of 1.5 m) in Dalian. The pond was filled with salty water to form the upper convective zone (UCZ), the non-convective zone (UCZ), and the lower convective zone (LCZ). Exergy efficiency, the ratio of available exergy to the total exergy was defined, basing on the first law of thermodynamics at each zone of the solar pond. The exergy efficiency of the three layers were analyzed separately accounting to the simulation results of the temperature distribution in the trapezoidal solar pond. It shows that the exergy efficiency of LCZ is the highest and most stable and proved to be the best heat extraction position.