Loading...

Modeling and Experimental Investigation of a solar Hybrid System to Produce Freshwater from Waste Heat of Photovoltaic Module by Using Thermosyphon heat pipes with different Configurations

Hooshmand, Payam | 2018

1083 Viewed
  1. Type of Document: M.Sc. Thesis
  2. Language: English
  3. Document No: 50836 (58)
  4. University: Sharif University of Technology, International Campus, Kish Island
  5. Department: Science and Engineering
  6. Advisor(s): Behshad Shafii, Mohammad; Roshandel, Ramin
  7. Abstract:
  8. With regard to an increasing world population and the constant capacity of water resources, new and valid methods should be implemented to preserve freshwater resources and accordingly produce drinking water. In the present study, a solar hybrid system was studied by experimental and theoretical means to facilitate the transformation of waste heat from photovoltaic module (PV module) into useful heat that can be used in a solar desalination (SD) system for freshwater production purposes. The study aimed to fabricate a SD system by using both PV module and thermosyphon heat pipes (THPs) technologies in a single system. In the modeling section, the goal is to present a comprehensive model based on the operation conditions of the system. In the experimental section, transferring the waste heat from the PV module to the saline water in the basin was done by heat pipes (HPs). Next, several parameters were taken into consideration after the fabrication of the SD system including the amount of freshwater produced by condensation of vapor from the glass cover and basin sidewalls as well as surface temperatures. In the next stage, the effect of water depth in the basin was evaluated and accordingly the amounts of produced freshwater were measured in passive and active conditions. Thus, this system can be considered as a system which has two main objectives: producing freshwater, and generating electric power by the PV module system. In order to compare the active and passive states, investigate the effects of the presence of a fan inside the basin through reflecting solar beams by a mirror, and finally to reduce the pressure inside the basin on performance, 5 scenarios were considered. Then, the experimental and theoretical results were compared and analyzed. The overall system efficiencies of the active and passive solar stills are evaluated as 44.71%, 23.24, 48.33%, 44.64% and 48.46 for Scenarios 1, 2, 3, 4 and 5, respectively. Finally, cost analysis was performed on the proposed system by which the production cost for one liter of freshwater was investigated
  9. Keywords:
  10. Solar Desalination ; Multiple Active Solar Still ; Experimental Investigation ; Thermosyphon Heat Pipe ; Photovoltaic Model ; Optimum Water Depth ; Overall System Efficiency

 Digital Object List

 Bookmark

No TOC