Computational Heat and Mass Transfer Optimization of Rectangular Solar Air Heater Duct with Different Shaped RIBS

Abstract

Energy is the foundation of a sustainable and quality life. In many structures, we require energy to meet our daily needs. The rate of energy consumption reflects a pattern or evolves gradually as part of a lifestyle. Broad energy sources can be organized into two classifications: regular and non-regular. Solar air heating systems are generally used as energy storage devices to provide hot air at moderate temperatures for heating and drying applications. An attempt was made to transfer heat through the absorber plate using the roughness. The experimental assembly was built using several components such as flat glass, asbestos, aluminium, galvanised iron, wooden material, collector, and entrance and exit doors. The collector generates hot air with the help of solar radiation. newlineSolar air heaters are used as energy saving devices to heat air. There are many ways to improve the air heater. To obtain a high convection heat transfer coefficient, flow turbulence is required in the heat transfer region. But the power is used for operating the fans, and a lot of power is needed. Test assemblies are made of various materials, flat glass, asbestos, aluminium, galvanised iron inlet and outlet doors. The maximum temperature (°C) of the hot air during the experiment is measured. newlineTraditional energy sources include petroleum products (coal, crude oil and flammable gas). Previous studies have found that the roughness of various rib shapes with air flow changes their laminar behaviour to turbulent shape. The turbulent effect of the flow inside the solar air heater duct disturbs the boundary layer formed near the heated surface. newlineThe main objective of the present work to enhance the heat transfer coefficient rate in solar air heater by using different orientations with staggered-down V-shaped rib roughness on the absorberplate.The experimental setup for flat plate solar collector has been prepared and the parameters like, Relative roughness pitch (P/e); Angle of attack (and#945;); Pitch (P); Height of rib (e) Relative gap size (g/e); Reynol