Abstract
An experimental investigation has been carried out for a range of system and operating parameters in order to analyze effect of artificial roughness on heat transfer and friction in solar air heater duct having triangular protrusions as roughness geometry. An increase in heat transfer and friction loss has been observed in solar for duct having roughened absorber plate. Experimental data have been used to develop Nusselt number and friction factor correlations as function of system and operating parameters for predicting performance of the system having investigated type of roughness geometry.
Highlights
The role of energy becomes increasingly important to fulfill needs of modern societies and to sustain fast economic and industrial growth worldwide
Renewable energy resources are those energy resources which get renewed by nature gain and again these resources are to be continuously produced in nature .Example would solar energy, wind energy, tidal energy, nuclear fusion, gobar gas, biomass, geothermal energy etc
It has been observed in both the cases, Nusselt number increases monotonously with increase in Reynolds number
Summary
The role of energy becomes increasingly important to fulfill needs of modern societies and to sustain fast economic and industrial growth worldwide. The rapid depletion of fossil resources has necessitated an urgent search for alternative sources of energy. Energy consumption has been increasing at one of the fastest rates in the world due to population growth and economic development. In view of world’s depleting fossil fuel reserves and environmental threats, development of renewable energy sources has received an impetus. Included in the definition is electricity and heat generated from solar, wind, ocean, hydropower, biomass, geothermal resources, and bio fuels and hydrogen derived from renewable resources. Renewable energy resources and significant opportunities for energy efficiency exist over wide geographical areas, in contrast to other energy sources, which are concentrated in a limited number of countries. Rapid deployment of renewable energy and efficiency, and technological diversification of energy sources, would result in significant energy security and economic benefits
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