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Research Journal of Engineering and Technology
Year : 2018, Volume : 9, Issue : 1
First page : ( 59) Last page : ( 66)
Print ISSN : 0976-2973. Online ISSN : 2321-581X.
Article DOI : 10.5958/2321-581X.2018.00009.0

Effect of parameters on Earth Air Heat Exchanger in Hot-dry climate

Singh Baljit1,*, Asati A. K.2,*, Kumar Rakesh3

1Ph. D Research Scholar, IKG Punjab Technical University, Jalandhar-Kapurthala Highway, Kapurthala, Punjab, baljitbhullar22@gmail.com

2Associate Professor, SBS STC, Ferozepur, Punjab

3Associate Professor and IET, Bhaddal, Ropar-140108 Punjab, rkthakur99@rediffmail.com

*Corresponding Author E-mail: arunkasati@yahoo.com

Online published on 24 May, 2018.

Abstract

Now days ‘save electricity and save high grade energy” are major concerns for societal needs. Various cooling methods are used to save energy as well as environment. To achieve comfort environment many techniques are used. The use of geothermal energy is one of the attractive ways to make environment healthy for mankind and to reduce the demand of electricity, which is increasing day by day. The Earth Air Heat Exchanger system is a better passive technology to the use of geothermal energy. In this research paper efforts are made to analyse the accomplishment of low cost cooling system of outdoor air for hot-dry climate. The effect of velocity, length and drop in temperature of air is studied at inlet and outlet of the pipe. The results of velocity variation reveal that for length of pipe 15 m and 1.5 m depth at velocities 4.8 m/s, 3.4 m/s and 2.5 m/s, the temperature drop is 4.2°C, 7.5°C and 9.2°C respectively. The effect of variation in length of pipe has been studied and as per the measurements the temperature drops of 9.2°C, 10.6°C and 11.9°C corresponding to length of 15 m, 30 m and 45 m for air velocity of 2.5 m/s and depth of 1.5 m. The maximum average temperature fall corresponding to 45 m length, at 1.5 m depth and at 2.5 m/s velocity is 8.6°C. The results show that maximum temperature drop available at low velocities because air gets larger time to get heat transfer in the underground pipe in soil.

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Keywords

Cooling methods, Geothermal energy, Passive cooling, Climate.

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