0
Research Papers

Evaluating Thermal Performance and Energy Conservation Potential of Hybrid Earth Air Tunnel Heat Exchanger in Hot and Dry Climate—In Situ Measurement

[+] Author and Article Information
Rohit Misra

Mechanical Engineering Department,
Malaviya National Institute of Technology,
Jaipur, Rajasthan 302001, India
e-mail: rohiteca@rediffmail.com

Vikas Bansal

Government Women Engineering College,
Ajmer, Rajasthan 305001, India

Jyotirmay Mathur

Mechanical Engineering Department,
Malaviya National Institute of Technology,
Jaipur, Rajasthan 302001, India

Tarun Aseri

Government Engineering College,
Ajmer, Rajasthan 305002, India

1Corresponding author.

Manuscript received March 25, 2012; final manuscript received September 8, 2012; published online June 24, 2013. Assoc. Editor: Zahid Ayub.

J. Thermal Sci. Eng. Appl 5(3), 031006 (Jun 24, 2013) (9 pages) Paper No: TSEA-12-1041; doi: 10.1115/1.4023435 History: Received March 25, 2012; Revised September 08, 2012

Earth air tunnel heat exchanger is a passive cooling device with advantageous feature to reduce energy consumption in buildings. Curtailing the electricity consumption of conventional vapor compression system based air-conditioner is a major concern especially in area with hot and dry weather conditions. The performance of conventional air-conditioners can substantially be enhanced by coupling these active cooling systems with passive cooling systems. In the present research, the thermal performance and energy conservation potential of hybrid cooling system has been investigated experimentally. An attempt has been made to enhance the thermal performance of active cooling system by coupling it with earth air tunnel heat exchanger (EATHE) in two different hybrid modes. The air which comes out of EATHE is relatively cooler than the ambient air and therefore can be used either for cooling the condenser tubes of a conventional window type air-conditioner or supplying it directly to the room being conditioned. The energy consumption of conventional 1.5TR window type air conditioner is found to be reduced by 16.11% when cold air from EATHE is completely used for condenser cooling.

FIGURES IN THIS ARTICLE
<>
Copyright © 2013 by ASME
Your Session has timed out. Please sign back in to continue.

References

Goswami, D. Y., and Ileslamlou, S., 1990, “Performance Analysis of a Closed Loop Climate Control System Using Underground Air Tunnel,” J. Sol. Energy Eng., 112, pp. 76–81. [CrossRef]
Bansal, N. K., Sodha, M. S., and Bharadwaj, S. S., 1983, “Performance of Earth Air Tunnels,” Energy Res., 7, pp. 333–345. [CrossRef]
Goswami, D. Y., and Biseli, K. M., 1993, “Use of Underground Air Tunnels for Heating and Cooling Agricultural and Residential Buildings,” Fact Sheet EES 78, University of Florida, Gainesville, FL.
Bansal, V., Misra, R., Agrawal, G. D., and Mathur, J., 2010, “Performance Analysis of Earth–Pipe–Air Heat Exchanger for Summer Cooling,” Energy Build., 42, pp. 645–648. [CrossRef]
Hajidavalloo, E., 2007, “Application of Evaporative Cooling on the Condenser of Window Air-Conditioner,” J. Appl. Therm. Eng., 27, pp. 1937–1943. [CrossRef]
Stevens, J. W., 2004, “Optimal Placement for Air-Ground Heat Transfer Systems,” J. Appl. Therm. Eng., 24, pp. 149–157. [CrossRef]
Hepbasli, A., Akdemira, O., and Hancioglub, E., 2003, “Experimental Study of a Closed Loop Vertical Ground Source Heat Pump System,” Energy Convers. Mgmt., 44(4), pp. 527–548. [CrossRef]
Bojic, M., Papadakis, G., and Kyritsis, S., 1999, “Energy From a Two-Pipe Earth-to-Air Heat Exchanger,” Energy, 24, pp. 519–523. [CrossRef]
Hepbasli, A., and Akdemir, O., 2004, “Energy and Exergy Analysis of a Ground Source (Geothermal) Heat Pump System,” Energy Convers. Mgmt., 45(5), pp. 737–753. [CrossRef]
Pfafferott, J., 2003, “Evaluation of Earth-to-Air Heat Exchangers With a Standardized Method to Calculate Energy Efficiency,” Energy Build., 35, pp. 971–983. [CrossRef]
Kumar, R., Ramesh, R., and Kaushik, S. C., 2003, “Performance Evaluation and Energy Conservation Potential of Earth–Air-Tunnel System Coupled With Non-Air-Conditioned Building,” Build. Environ., 38, pp. 807–813. [CrossRef]
Ajmi, F. A., Loveday, D. L., and Hanby, V., 2006, “The Cooling Potential of Earth–Air Heat Exchangers for Domestic Buildings in a Desert Climate,” Build. Environ., 41, pp. 235–244. [CrossRef]
Bi, Y. H., Chen, L., and Wu, C., 2002, “Ground Heat Exchanger Temperature Distribution Analysis and Experimental Verification,” Appl. Therm. Eng., 22(2), pp. 183–189. [CrossRef]
Wu, H. J., Zhu, D. S., and Zou, H. S., 2002, “Thermodynamic Analysis and Simulation of Ground Source Heat Pump With Adsorption Dehumidification,” Proceedings of the International Sorption Heat Pump Conference, pp. 528–532.
Wu, H. J., Zhu, D. S., and Li, J., 2003, “Thermodynamic Analysis of Earth Cooling System Combined With Adsorption Dehumidification for Air Conditioning,” J. South China Univ. Technol., Nat. Sci., 31(7), pp. 37–41. Available at http://file.lw23.com/1/14/14e/14e3d95a-692e-4337-9b4d-1c3da7c9519c.pdf
Yumrutas, R., Kanoglu, M., Bolatturk, A., and Bedir, M. S., 2005, “Computational Model for a Ground Coupled Space Cooling System With an Underground Energy Storage Tank,” Energy Build., 37, pp. 353–360. [CrossRef]
Yumrutas, R., and Unsal, M., 2005, “Modeling of a Space Cooling With Underground Storage,” Appl. Therm. Eng., 25, pp. 227–239. [CrossRef]
Holman, J. P., 2004, Experimental Methods for Engineers, Tata McGraw-Hill, New Delhi, Chap. III.

Figures

Grahic Jump Location
Fig. 1

Schematic of room integrated with hybrid EATHE system

Grahic Jump Location
Fig. 2

Weather station for measuring solar radiation, relative humidity and DBT of ambient air

Grahic Jump Location
Fig. 3

Experimental set-up of hybrid EATHE system

Grahic Jump Location
Fig. 4

Intensity of solar radiation recorded in the month of May–June for different modes

Grahic Jump Location
Fig. 5

Hourly temperature and relative humidity recorded in the month of March for different modes

Grahic Jump Location
Fig. 6

Hourly temperature and relative humidity recorded in the month of April for different modes

Grahic Jump Location
Fig. 7

Hourly temperature and relative humidity recorded in the month of May for different modes

Grahic Jump Location
Fig. 8

Hourly temperature and relative humidity recorded in the month of June for different modes

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In