We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Numerical and experimental investigation of a hybrid solar still-solar air heater.
- Authors
Ghazy, Ahmed
- Abstract
Basin-type solar stills are among the simplest and least expensive solar distillation technologies for transforming saline or brackish water into potable water. Extensive research has been conducted to increase the daily distillate yield of solar stills by increasing incident solar radiation, enhancing saline water evaporation, and enhancing vapor condensation. This study presents a novel hybrid solar still-solar air heater (SS-SAH) in which the condensation energy of the solar still is recovered in heating air for space heating, dehydration of industrial products, and crop drying. The thermal performance of the hybrid SS-SAH has been investigated both experimentally and numerically under hot climate conditions. In addition, the impact of various climate and operational conditions on the thermal performance of the hybrid SS-SAH has been explored. Moreover, comparing the thermal performance of the hybrid SS-SAH to that of a conventional solar still of the same size revealed an improvement of 20%. Furthermore, the thermal performance of the hybrid SS-SAH was enhanced under conditions of high solar irradiance, high air mass flow rate, low ambient temperature, low surrounding wind velocity, and low initial saline water mass. For instance, the overall thermal efficiency of the hybrid SS-SAH increased from 42% to 72% when the air mass flow rate was increased from 0.001 to 0.2 kg/s, and distillate water production increased by 50% with the increase in the solar intensity from 950 to 1,150 W/m2.
- Subjects
SOLAR air heaters; SOLAR stills; SPACE heaters; SALINE waters; BRACKISH waters; SALINE water conversion; DRINKING water
- Publication
Desalination & Water Treatment, 2023, Vol 285, p11
- ISSN
1944-3994
- Publication type
Article
- DOI
10.5004/dwt.2023.29310