This study addresses the method of adding heat to a salt gradient solar pond (SGSP) from external sources and investigates the thermal performance of the pond. In this case, the external heat source is solar heat collected by evacuated tube solar collectors (ETSC), and collected heat is transferred to the lower-convective zone (LCZ) of the SGSP by circulating fluid from the LCZ. Results show that heat addition from the external source enhances the thermal performance of the SGSP in terms of heat recovery and thermal efficiency but with certain constraints. The heat addition efficiency reduces with increase in aperture area of the ETSC. Also with increasing heat addition, the heat removal from the SGSP has to be increased; otherwise, the SGSP efficiency reduces rapidly. Heat removal from SGSP has to be performed keeping in mind the heat demand and the quality of heat. The latter reduces with an increase of heat extraction beyond a certain limit. Hence, optimizing the range of parameters in case of adding heat from external sources is very important for the best performance of a SGSP.
Investigation of Thermal Performance of a Solar Pond With External Heat Addition
Contributed by the Solar Energy Division of ASME for publication in the JOURNAL OF SOLAR ENERGY ENGINEERING: INCLUDING WIND ENERGY AND BUILDING ENERGY CONSERVATION. Manuscript received September 8, 2017; final manuscript received November 7, 2017; published online January 22, 2018. Assoc. Editor: M. Keith Sharp.
- Views Icon Views
- Share Icon Share
- Search Site
Ganguly, S., Date, A., and Akbarzadeh, A. (January 22, 2018). "Investigation of Thermal Performance of a Solar Pond With External Heat Addition." ASME. J. Sol. Energy Eng. April 2018; 140(2): 024501. https://doi.org/10.1115/1.4038788
Download citation file: