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Asati, Arun Kumar
- Analysis of Velocity for Earth Air Heat Exchanger in Hot-Humid Climate
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Authors
Affiliations
1 Department of Mechanical Engineering, IKGPTU Kapurthala, Punjab, IN
2 SBSSTC, Ferozepur, Punjab, IN
3 IET Bhaddal, Ropar, Punjab, IN
1 Department of Mechanical Engineering, IKGPTU Kapurthala, Punjab, IN
2 SBSSTC, Ferozepur, Punjab, IN
3 IET Bhaddal, Ropar, Punjab, IN
Source
Research Cell: An International Journal of Engineering Sciences, Vol 25 (2017), Pagination: 1-10Abstract
Air cooling by conventional methods is practically everywhere, i.e. homes, hotels and hospitals. The temperature of the environment, increasing day by day due to heavy vapor compression systems used to meet the cooling load of buildings. The huge electricity is required for handling the cooling demands which are further destroying our natural resources. Efforts can be made to look for sustainable cooling system instead of using costly air conditioning systems. In this study effort is made to look for a low cost air cooling system for buildings by use of thermal energy of soil. The geothermal effect of soil can be very helpful for decreasing or increasing the temperature of the air. Using this method of cooling, the high grade energy demand, as well as environmental issues, can be minimized. The best use of geothermal energy can be made effective with the use of Earth Air Heat Exchanger method. The study of the air velocity may help in finding a maximum temperature drop of the air. With the rise in velocity to appropriate value it gives better results at a velocity of 2.5 m/s the maximum drop in temperature is 7.2 °C, for 3.4 m/s maximum drop is 6.5°C and at a velocity of 4.8 m/s drop is 4.0°C. Therefore the velocity of 2.5 m/s is cost effective and result oriented to a given Earth Air Heat Exchanger. The maximum average fall for a velocity of 2.5 m/s is equal to 5.4°C in the month of July for hot- humid climate.Keywords
Air Cooling, Geothermal Energy, Earth Air Heat Exchanger, Climate.Full Text
References
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- Effect of Temperature and Specific Humidity of the Air on Performance of Celdek Packed Liquid Desiccant Regenerator
Abstract Views :145 |
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Authors
Affiliations
1 Department of Mechanical Engineering, IET Bhaddal, Ropar, Punjab, IN
2 Department of Mechanical Engineering, SBS STC Ferozepur, Punjab, IN
1 Department of Mechanical Engineering, IET Bhaddal, Ropar, Punjab, IN
2 Department of Mechanical Engineering, SBS STC Ferozepur, Punjab, IN
Source
Research Cell: An International Journal of Engineering Sciences, Vol 25 (2017), Pagination: 147-159Abstract
Current paper presents experimental study of the effect of inlet process parameters of humid air on different output parameters of counter flow liquid desiccant regeneration system. Temperature and specific humidity are selected as inlet process parameters. Regenerator is the heart of liquid desiccant air cooling system. Celdek structured pads with packing density 390 m2/m3 as packing material and calcium chloride as liquid desiccant are used in the present research. Air and desiccant solution flow in counter flow direction with respect to each other. One parameter is varied at a time and others are kept constant. Different outlet parameters studied are outlet specific humidity, evaporation flow rate, outlet temperature of air, outlet temperature of solution and effectiveness of the regenerator. Variation of evaporation rate at average found is 51.86 % which is maximum increase among all output parameters. Decrease in solution output temperature obtained is 4.75 % with varying specific humidity of air.Keywords
Desiccant, Air, Regenerator, Celdek Pads, Specific Humidity, Effectiveness, Evaporation Flow Rate, Temperature.Full Text
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