Analysis of Heat Transfer for Solar Air Heater - A Perspective View

Solar air heater is one of the most valuable heat sources of energy with variety of applications such as industrial process heating, space heating, drying of fruits and vegetables, etc. It is renewable as well as pollution free for space heating and when it is used in commercial buildings or industries could be very expensive. The solar air heating is a process in which the radiant energy emitted from the sun is captured on an absorber plate and is used for space heating. Improvement in thermal performance of a solar air heater can be done by enhancing the heat transfer. Providing artificial roughness on a heat transferring surface is one of the methods for effective enhancement of heat transfer to fluid flow, the other is to introduce the copper wire mesh screen matrix and by passing the fluid through it. In this paper, reviews of heat transfer techniques with the use of Artificial Roughness Geometry and wire mesh in order to improve performance and the effect of various parameters of porous media like pitch, number of layers, bed depth, porosity, thermal conductivity, pitch to wire diameter ratio have been discussed. Shashi Shukla | Prof. H. S. Sahu "Analysis of Heat Transfer for Solar Air Heater - A Perspective View" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-2 , February 2019, URL: https://www.ijtsrd.com/papers/ijtsrd21612.pdf