Invertis Journals of Renewable Energy

Kishan Pal Singh ¹, Onkar Singh ¹

Affiliations
1 Department of Mechanical Engineering, H.B.T.I, Kanpur, IN

Abstract

The strong warming of the last 60 years can't explain. The 0.6 K increase in average global surface temperature during the 20^th century (As IPCC). Compressors and chloro fluro carbon are partially responsible for greenhouse gas emissions and environmental pollution currently being addressed globally. The current climate models predict that global temperatures will rise by a further 1.4 to 5.8 K by the end of the 21st century. Therefore, the use of nature friendly refrigerant when the driving power comes from renewable or low-grade waste heat sources may lessen global warming and ozone layer depletion. This paper describes a system and introduces an efficient diffusion absorption cycle.

Keywords

Lithium Bromide, Ammonia, Absorption, Diffusion, Regenerator.

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Kishan Pal Singh ¹, Ayaz Mehmood ²

Affiliations
1 Department of Mechanical Engineering DCTM, Palwal, Haryana, IN
2 Department of Mechanical Engineering, Mewat College of Engineering & Technology, Mewat (Haryana), IN

Abstract

In hot and humid region, air-conditioning is increasingly used to attain thermal comfort. Air-conditioning is highly energy intensive and it is desirable to develop alternative low-energy means to achieve comfort. A comparison of overall cost reduction in providing thermal comfort in a building by the use of (i) Wetted roof surface and (ii) Painted roof, against bare roof surface. For this purpose M.R reading hall of M.A Library A.M.U Aligarh is chosen as the subject building and the mathematical model available in the literature have been used for prediction of roof outside surface temperature and consequent heat transmission in the building through the roof. Calculations were carried out for a typical summer day of May for Aligarh (India). The difference between the wetted & bare roof and painted & bare roof is compared to conclude that wetted roof surface cooling technique is much better than the painted roof surface.

Keywords

Solar Energy, Passive Cooling, Thermal Modeling, Periodic Analysis.

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Kishan Pal Singh ¹, Yogesh Kumar ²

Affiliations
1 Department of Mechanical Engineering, DCTM, Palwal, Haryana, IN
2 Department of Mechanical Engineering, CCS University, Meerut (UP), IN

Abstract

Performance analysis of a single slope basin type solar still has been carried out based on the experimental data recorded at Aligarh for some typical days. The radiative, convective and evaporative heat transfer coefficients between the water surface and the glass cover through the humid air are evaluated using standard correlations and those used by other authors. The experimental data include the temperatures of basin liner (absorber plate), water mass, humid air, glass cover surface and the ambient air.

Keywords

Heat Transfer Coefficients, Convection, Radiation, Evaporation, Solar Flux.

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Kishan Pal Singh ¹

Affiliations
1 D.C.T.M., Palwal, IN

Abstract

Correlation for the design parameter of solar distillation plant based upon experimental data collected on a prototype unit of size 2 m×1 m area at Aligarh, has been developed. The correlation for the absorber plate temperature, glass temperature, water liner temperature and water vapor temperature developed in terms of the solar flux fit the experimental data for the month of March, April and December. The mass of distillate calculated from the energy balance equation with the help of MATLAB software using the developed correlation also agree well, with the measured values of the distillate on the available plant.

Keywords

Solar Water Still, Design Parameters, MATLAB Experiment.

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Nizam Ali ¹, Kishan Pal Singh ¹

Affiliations
1 Delhi College of Technology and Management, Palwal (Haryana), IN

Abstract

The aim of this study is to discuss a vehicle driven by a solar and electrical means. The renewable energy is vital for today's world as in near future the non-renewable sources that we are using are going to get exhausted. The solar vehicle is a step in saving these non-renewable sources of energy. The basic principle of solar car is to use energy that is stored in a battery during and after charging it from a solar panel. The charged batteries are used to drive the motor which serves here as an engine and moves the vehicle in reverse or forward direction. The electrical tapping rheostat is provided so as to control the motor speed. This avoids excess flow of current when the vehicle is supposed to be stopped suddenly as it is in normal cars with regards to fuel. This idea, in future, may help protect our fuels from getting extinguished. All recent electric vehicles present drive on AC power supplied motor. The setup requires an inverter set connected to battery through which DC power is converted to AC power. During this conversion many losses take place and hence the net output is very less and lasts for shorter duration of time. Although this is cheaper setup and maintenance required is much more in AC drive than DC drive. The vehicle designed is controlled by electrical means. It also has a bomb detector which helps it detect the bombs. It is very useful for military purposes. This vehicle is small in size and light in weight so these are very useful in military operations.

Keywords

Bomb Detector, Photo Volatile Cell, Solar Cell, Solar Powered Vehicle.

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Kishan Pal Singh ¹, S. Q. Hussain ²

Affiliations
1 Department of Mechanical Engineering, D.C.T.M, Palwal, Haryana, IN
2 Department of Mechanical Engineering, WIT, Sohna, Haryana, IN

Abstract

Experimental studies on a basin type still, basically application to the solar energy has been carried out at room condition for the purpose of simulation and to provide a substantial feed back for its thermal modeling in the actual conditions of solar energy. The basin holds water maintain at a certain depth which is being heated electrically. Due to evaporation of water, there exist humid air zone above the water level. The vapour on reaching the inclined glass cover condenses and trickles down to collected outside the still. The measurement consists of power input, distillate output and temperatures along the height from the base of basin up to the glass outer and the air surrounding it. Temperature profiles along the height in water depth, humid air region and near the glass cover are quite interesting. Subsequently, the vapour pressure in the system has also been predicted. Effect of heat input on the temperatures of the absorber, the water, humid air vapour and those of glass cover are studied. The distillate output increases with time of heating as well as on increasing the heat input. Efficiency of the still has been studied based upon the total heat input and the heat taken by the water. The efficiency of the still increases with the heat input.

Keywords

Solar Energy, Solar Heating, Heat Input, Productivity.

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