Multi-Layer Heat Extraction from Non-Convective Zone of Solar Ponds for Efficiency Enhancement

International Conference on Sustainable Energy and Green Technology 2018

能源学;生态环境科学

Yaakob, Y.^1 ; Ibrahim, D.^1 ; Moria, H.^2 ; Date, A.^3 ; Akbarzadeh, A.^3

Faculty of Mechanical Engineering, Universiti Teknologi MARA, Permatang Pauh, Penang

13500, Malaysia^1

Mechanical Engineering Department, Yanbu Industrial College, P.O.Box 30436, Post Code 41912, Yanbu Al-Sinaiyah, Saudi Arabia^2

School of Aerospace, Mechanical and Manufacturing Engineerng, RMIT University, Bundoora

VIC

3083, Australia^3

关键词: Convective zone;    Efficiency enhancement;    External heat exchangers;    Heat extraction;    Lower convective zones;    Nonconvective zone;    Overall efficiency;    Thermal efficiency;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/268/1/012126/pdf
DOI  :  10.1088/1755-1315/268/1/012126

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Heat from solar pond has been successfully extracted from lower convective zone (LCZ). An attempt to extract the absorbed heat in non-convective zone (NCZ) using external heat exchanger is introduced with aim to enhance the overall efficiency of solar pond. A sets of external heat exchanger system are installed to extract heat at different level in NCZ by withdraw the hot brine and re-injecting it back at the same level. Cold brine from upper convective zone (UCZ) is used to collect the extracted heat from each of heat exchanger. The result shows by extracting heat from NCZ, the thermal efficiency of solar pond could be increased by up to 50% compared to the common heat extraction solely from LCZ and reducing the upward heat lost to surrounding.