On-Site Operation Performance Investigation of Nocturnal Cooling Radiator for Heat Radiation
- 205 Downloads
Nocturnal cooling radiation is one of the effective natural passive cooling technologies by electromagnetic infrared radiation exchange between terrestrial surfaces and the sky. For promoting the application of nocturnal cooling radiation in the active cooling system, a novel nocturnal cooling radiator with simple panel structure and low initial investment is designed in this study. In order to investigate the heat radiation performance of the nocturnal cooling radiator, a practical test rig of nocturnal cooling radiation system with thermometer sensors and flow rate sensors is assembled horizontally against on the roof of a science and technology building located in Jinan, China. Then, the outlet water temperature, cooling capacity, and the exterior wall temperature distribution of the nocturnal cooling radiator for different operation conditions are measured and recorded. According to the practical investigation, the heat dissipating capacity of properly designed and controlled nocturnal cooling radiator is proved to be considerable for merging with various active cooling systems.
KeywordsOn-site operation test Nocturnal cooling radiator Performance investigation
The project is supported jointly by a grant from National Natural Science Foundation of China (Number 51808321) and a grant from Shandong Province Natural Science Foundation (Number BS2015NJ016).
- 1.Catalanotti, S., et al.: The radiative cooling of selective surfaces. Sol. Energy 17(83), 97–112 (1975)Google Scholar
- 3.Arago, F.: Annuaire du Bureau des Longitudes pour I’an. reprinted in Oeuvres Completes de Francois Arago. 87–95 (1826)Google Scholar
- 8.Mostrel, M., Givoni, B.: Windscreens in radiant cooling. Passive Sol J 14, 229–238 (1982)Google Scholar
- 10.Ferrer, J., et al.: Modeling and experimental analysis of three radio convective panel for night cooling. Energy Build. 37–48 (2015)Google Scholar