ISSN 2319-5347, ISI Impact Factor: 0.763

VOLUME 03 NO. 01 JANUARY 2015:

Title:         Theoretical model of circular solar collector for close water open air (CWOA) heated humidification and dehumidification
Authors:     Anil Motiram Patel, Mandar Mukundrav Sumant, V. Shiva Reddy
Abstract:    The direct contact between the collector and the saline water, result in corrosion and scaling in the still, which is the biggest problem that negatively influence the still performance and thereby reduce the thermal efficiency. In flat plate air heater, cost incurred due to insulation cladding is more so the air heater without insulation is required to develop. .In circular solar collector air heater, air is used as a working fluid, which eliminates this problem. The constructions are usually lightweight and inexpensive, and work at atmospheric pressure. A solar air heater is a component, which increases the temperature of the air to a very high temperature
using the principle of solar radiation. The use of air as a working medium eliminates the need of a heat exchanger. If the θ is the angle between an incident beam radiation I and normal to the plane surface, then the equivalent flux or radiation intensity falling normal to the surface is given by I Cos θ is the incident angle and Cos θ is the incident angle effect which reduce the radiation intensity. We cannot get constant radiation intensity in case of flat plate air heater. Incident angle effect for airtight circular collector is varying by small change with high value for different months at different hours. Due less incident effect maximum solar radiation can be received by collector surface. Hence, circular geometry collector is consider to minimize the angle of incidence of beam radiation on the collector surface and thus maximize the incident beam radiation.

Keywords:   Circular Water Collector, Radiation Intensity, Incident Angle
Pages:          26-30

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