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and heat transfer mechanism in case of different rib geometries has been expatiated based on available literature …
Persistent link: https://www.econbiz.de/10011117079
In the present scenario, numerous applications perform on solar energy for cooking, heating and cooling, and power generation, globally. Solar air heaters are one of these applications purposely used for, drying, timber seasoning and space heating. In the present work, a solar air heater (SAH)...
Persistent link: https://www.econbiz.de/10011189918
in solar air heater. Over the years different rib geometries have been designed to investigate heat transfer and friction … characteristics of solar air heater. In this paper an attempt is made to review development of different rib geometries employed for …. Performance evaluation for different orientations of double arc rib roughness is presented. …
Persistent link: https://www.econbiz.de/10011190416
This paper presents thermo-hydraulic performance comparison of rib roughness under investigation, ‘V-down ribs with gap …’ and similar reported rib roughness geometries used in solar air heater duct. The present rib roughness has flow … boundary conditions correspond closely to those found in conventional solar air heaters. Five rib roughened plates having …
Persistent link: https://www.econbiz.de/10011190446
The regeneration of silica gel desiccant by a solar air heater for use in an air-conditioning system has been investigated. The hot air is produced by a compound parabolic concentrator collector (CPC), which has aperture and receiver areas 1.44 and 0.48m2, respectively. The regeneration...
Persistent link: https://www.econbiz.de/10010804112
This paper describes the development and testing of an educational solar air heater. The flat-plate solar air heater has been used as a teaching rig for undergraduate students in measurements laboratory sessions, during which the collector efficiency is determined. The results of indoor testing...
Persistent link: https://www.econbiz.de/10010804597
The influence of external recycle on the collector efficiency in solar air heaters with internal fins attached, has been investigated theoretically. The application of external recycle operation to solar air heaters actually has two conflict effects. One is the increase in fluid velocity to...
Persistent link: https://www.econbiz.de/10010804905
The device performance of the new design of wire mesh packed double-pass solar air heaters with attaching wire mesh under external recycle was investigated experimentally and theoretically. The improvement of device performance of wire mesh packed solar air heaters with different flow patterns...
Persistent link: https://www.econbiz.de/10010807237
The heat transfer coefficient between the absorber plate and air can be considerably increased by using artificial roughness on the underside of the absorber plate of a solar air heater duct. Under the present work, an experimental study has been carried out to investigate the effect of...
Persistent link: https://www.econbiz.de/10010808300
In order to enhance rate of heat transfer to flowing air in the duct of a solar air heater, artificially roughened surface of absorber plate is considered to be an effective technique. Investigators reported various roughness geometries in literature for studying heat transfer and friction...
Persistent link: https://www.econbiz.de/10010808656