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A novel hybrid desiccant-based ejector cooling system for energy and carbon saving in hot and humid climates

Heidari, A ; Sharif University of Technology | 2019

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  1. Type of Document: Article
  2. DOI: 10.1016/j.ijrefrig.2019.03.028
  3. Publisher: Elsevier Ltd , 2019
  4. Abstract:
  5. Desiccant-based evaporative cooling systems are considered as an energy efficient alternative to conventional vapor compression systems in humid climates. A novel hybrid desiccant-based ejector cooling (hybrid DEC) system is here presented to utilize low grade heat. In order to evaluate the system performance under subtropical humid climates, a dynamic hourly simulation of the system is performed for a typical building in Sydney. The results indicate that the hybrid DEC system is able to provide comfort conditions in subtropical and humid climates. Hybrid DEC system has a significant higher coefficient of performance compared to the conventional vapor compression system resulting to 84% electricity savings and 10.2% natural gas savings during the summer season, which results to 41% reduction in CO2 emissions. Therefore, these results demonstrate that there is a good potential in combining ejector cooling cycle and desiccant-based evaporative cooling cycle for energy and carbon savings. © 2019 Elsevier Ltd and IIR
  6. Keywords:
  7. Energy saving ; Evaporative cooling ; Solid desiccant ; Carbon ; Driers (materials) ; Ejectors (pumps) ; Energy conservation ; Energy efficiency ; Evaporation ; Gas emissions ; Thermoelectric equipment ; Tropics ; Comfort conditions ; Ejector cooling system ; Ejector cycle ; Electricity saving ; Hot and humid climate ; Solid desiccants ; Vapor-compression systems ; Evaporative cooling systems
  8. Source: International Journal of Refrigeration ; Volume 101 , Volume 101 , 2019 , Pages 196-210 ; 01407007 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/abs/pii/S0140700719301276