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Solar chimney power plant (SCPP) is a promising unit of power generation from renewable energy source in near future. Apart from climatic conditions, the performance of the unit depends on design parameters of plant. To understand the performance of the unit, fluid flow and heat transfer study is essential throughout the unit. In present work, a numerical study has been conducted to see the effect of inlet area on the performance of the unit through fluid flow and heat transfer. Numerical solutions of the steady turbulent flow are carried out by commercial software Fluent. A finite volume method has been employed to solve the governing equations. It is revealed that the considered plant having inlet height of 5cm performs better than that of having the inlet height10cm.

In the global outbreak of the covid-19 pandemic the cleaning of hands has become most necessary which helps in prevention of germs which indirectly helps in reducing the cause of the diseases not only the covid-19 but various diseases because most of the germs reaches our body through hands while we touch our face of eat something with dirty hands. Now as prescribed by the WORLD HEALTH ORGANIZATION {WHO} to reduce the spreads we have to wash hands thoroughly with soap and water regularly as well as we have to sanitize our hands with the help of the sanitization liquids or gels. The most preferable form of the sanitization of the hands is considered as the use of sanitization liquids as compared to washing hands with soap because sanitizers are much more effective as compared to soaps and can be carried anywhere and can be used just by pouring in hands and rubbing thoroughly without the use of any water. And in another lateral thinking way it is not only helps in reducing the germs but also helps in saving the water. Since squeezing the sanitization bottle at times after times is considered unnecessary and unhygienic automation of the sanitization comes into picture.