Open Access Open Access  Restricted Access Subscription or Fee Access

Cooling and Heating Effect of Geothermal Energy and Its Thermal Analysis Using Air as a Flow Medium

Sanjeev Patel, Abhishek Kumar

Abstract


Geothermal energy is one of the renewable sources of energy, which exists free in the environment. The main concept of a geothermal energy is the thermal energy of the ground which is used for cooling and heating. Here, air is used as a flow medium. The flow medium gets cool in the summer and gets heated in the winter due to the temperature difference between the flow medium and underground surface. Study of model is carried out using ANSYS software. Software simulation is being used for measurement of heat transfer. The software requires parameters, such as the diameter, air flow rate depth, tube length and condensation in the meantime have to be considered., Computational Fluid Dynamics (CFD Fluent) workbench under ANSYS software is used as simulation analysis. The parameters used for computation are the pipe of 45 m length, 0.004 m thickness and 0.08 m diameter. Velocity of air is considered to be 1 m/s and 5 m depth of pipe from the earth ground. The inlet temperature for a days in June (2016) to May (2017) according the climate of Algeria. Copper is considered for analysis. Using Fluent heat variations is being analyzed. It is observed at increasing velocity increases the rate of heat transfer, mid temperature, outlet temperature varies in summer and winter.

Full Text:

PDF

References


A. Capozzaa, A. Zarrellab, M. De Carlib. Analysis of vertical ground heat exchangers: the new CaRM tool, In: 69th Conference of the Italian Thermal Machines Engineering Association. ATI2014.

R. Ranjan Manjul, V.N. Bartaria. Earth air heat exchanger performance in summer cooling for various supply air conditions – a review, Int J Eng Trends Technol. 2016; 35: 387p. 8 May 2016 ISSN: 2231-5381 http://www.ijettjournal.org.

Y. Mana, H. Yangb, Y. Qua, Z. Fanga. 9th International Symposium on Heating, Ventilation and Air Conditioning (ISHVAC) and the 3rd International Conference on Building Energy and Environment (COBEE) Feasibility Investigation of the Low Energy Consumption Cooling Mode with Ground Heat Exchanger and Terminal Radiator.

M. Grosso, G. Chiesa. Horizontal earth-to-air heat exchanger in Imola, Italy. A 30-monthlong monitoring campaign, In: 6th International Building Physics Conference. IBPC, 2015.

C.G. Popovicia, T. Mateescua, R. Luciua, I. Cazacua. Bucharest, Romania Innovative solutions for geothermal heat exchangers, In: Sustainable Solutions for Energy and Environment. EENVIRO 2016, 26–28 October 2016.

A. Debbarma. Performance of proposed earth-tank heat exchanger: a computational study, IOSR J Eng (IOSRJEN). e-ISSN: 2250-3021, p-ISSN: 2278-8719 Vol. 3, Issue 1 (Jan. 2013), ||V2|| PP 68-72 www.iosrjen.org 68.

M. Carlinia, E. Allegrinia, S. Castelluccia. Numerical simulation of a down-hole heat exchanger: an application to a case study in central Italy, In: 71st Conference of the Italian Thermal Machines Engineering Association, ATI2016, 14–16 September 2016, Turin, Italy.

S. Jakhar, M.S. Soni, N. Gakkhar. Performance analysis of earth water heat exchanger for concentrating photovoltaic cooling, In: 5th International Conference on Advances in Energy Research. ICAER 2015, 15–17 December 2015, Mumbai, India.

M.S. Sodha, D. Buddhi, R.L. Shawney. Optimization of pipe parameters of an underground air pipe cooling system Energy Conserv Manage. 1993; 34(6): 465–70p

M. Krarti, J.F. Krieder. Analytical model for heat transfer in an underground air tunnel, Energy Conserv Manage. 1996; 37(10): 1567–74p

D. Deglin, L.V. Caenegem, P. Dehon. Subsoil heat exchanger for air conditioning of livestock buildings, J Agric Eng. 1999; 73: 179–88p.

V. Bansal, R. Misra, G. Das Agarwal, J. Mathur J. ‘Derating Factor’ new concept for evaluating thermal performance of earth air tunnel heat exchanger: a transient CFD analysis, Appl Energy. 2013; 102 :418e26p.

H. Ben Jmaa Derbel, O. Kanoun. Investigation of the ground thermal potential in Tunisia focused towards heating and cooling applications, Appl Therm Eng. 2010; 30: 1091e100p.

D. Yang, Y. Guo, J. Zhang. Evaluation of the thermal performance of an earth-to-air heat exchanger (EAHE) in a harmonic thermal environment, Energy Convers Manage. 2016; 109: 184e94p.

F. Ascione, L. Bellia, F. Minichiello. Earth-to-air heat exchangers for Italian climates, Renew Energy. 2011; 36: 2177–88p.

V. Bansal, R. Misra, G.D. Agrawal, J. Mathur. Performance evaluation and economic analysis of integrated earth–air–tunnel heat exchanger–evaporative cooling system, Energy Build. 2012; 55: 102–8p.

A. Sehli, A. Hasni, M. Tamali. Energy Procedia. 18 (2012) 496 – 506p 1876-6102 © 2012 Published by Elsevier Ltd. Selection and/or peer review under responsibility of The TerraGreen Society. doi: 10.1016/j.egypro.2012.05.061 The potential of earth-air heat exchangers for low energy cooling of buildings in South Algeria.

V. Bansal, R. Misra, G.D. Agarwal, J. Mathur. “Derating Factor” new concept for evaluating thermal performance of earth air tunnel heat exchanger, Appl Energy. 2013; 102: 418–26p.

A. Tudor, V. Badescu. The influence of several parameters on the performance of earth to air heat exchangers in South-Eastern European climates, U.P.

A. Debbarma. Performance of proposed earth-tank heat exchanger: a computational study, IOSR J Eng (IOSRJEN). e-ISSN: 2250-3021, p-ISSN: 2278-8719 Vol. 3, Issue 1 (Jan. 2013), ||V2|| PP 68-72 www.iosrjen.org 68.

A. Capozzaa, A. Zarrellab, M. De Carlib. Analysis of vertical ground heat exchangers: the new CaRM tool, In: 69th Conference of the Italian Thermal Machines Engineering Association. ATI2014.

C.G. Popovicia, T. Mateescua, R. Luciua, I. Cazacua. Bucharest, Romania Innovative solutions for geothermal heat exchangers, In: Sustainable Solutions for Energy and Environment. EENVIRO 2016, 26–28 October 2016.

R. Ranjan Manjul, V.N. Bartaria. Int J Eng Trends Technol. (IJETT) – Volume 35 Number 8- May 2016 ISSN: 2231-5381 http://www.ijettjournal.org Page 387 Earth Air Heat Exchanger Performance in Summer Cooling for Various Supply Air Conditions – A Review.

D. Belatrachea, S. Bentouba, M. Bourouis. Numerical analysis of earth air heat exchangers at operating conditions in arid climates, Int J Hydrogen Energy. 2016. 1e7journal homepage:M. Grosso, G. Chiesa. Horizontal earth-to-air heat exchanger in Imola, Italy. A 30-monthlong monitoring campaign, In: 6th International Building Physics Conference. IBPC, 2015.


Refbacks

  • There are currently no refbacks.