Studying the Performance of Back–Pass Plain Plate Solar Air Heating Un-Glazed Collector

Abstract

This paper presents a studying performance of Back – pass plate solar air heating un-glazed collector that is simply say the recent cladding of new building and industrial facade. The use of a solar energy as a source of air heating used for ventilation or air preheating will consequently reduce the energy consumption which is the aim of this paper.
This paper describes the main characteristics of this type of air collector and the heat balance between all its components to reach to an equation that shows the air temperature variation across the collector and to study the effects of its main parameters on the temperature rise between the inlet initial air temperature and its outlet air temperature and made the possibility to design such type of air heating system collectors. The main parameter which plays the main role in temperature variation and rise in this type of collector is the solar radiation, it is calculated for the vertical walls facing south, and then it is changed to an equation to describe its variation through the daylight time for the clear and shiny day, the equation is a half – sine model.