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FLUENT ANALYSIS ON EARTH HEAT EXCHANGER WHERE AIR AS A FLOW MEDIUM

Md Affan Akhtar, Prof. Dharmendra Singh Rathore

Abstract


Renewable energy is the best source of energy. It is abundant in nature, it’s just like a gift of god. Nowadays, heating and cooling is a major issue in environment due to global warming. A major part of energy is being engaged in such issues. So Earth tube heat exchanger is a renewable source of energy for heating and cooling of any building. Here, in this study we will perform a software simulation for the performance check up of the system. Here, the monthly ambient air temperature heating and cooling of the earth air tube heat exchanger over a year, also the temperature difference of air between the inlet and outlet of the earth air heat exchanger for the month of July 2018 to May 2019. It can be observed that the air temperature difference between the inlet and outlet of the EAHE varies according to every month. The soil temperature of earth remains constant almost throughout the year. At a depth of 5 m, and pipe length of total 45 m it is noted that the air temperature decreases from the maximum ambient temperature of 41.2 C corresponding to the month of June in the region of Bhopal M.P.It is also noticed that the air velocity inside the earth air heat exchanger is at a constant value almost the length.

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REFERENCES

Ashrae: Ashrae Handbook of Fundamentals, American Society of Heating, Refrigerating and Air Condition Engineers,2001.

Arkar, C., Medved, S.: Free cooling of a building using PCM heat storage integrated into the ventilation system, Solar Energy 81,2007.

Bartsch, H., J.: Matematické vzorce, SNTL, Praha,1971.

Beltrami, H.: Inference of climate change from geothermal data, Global and Planetary Change 29,2001.

Beltrami, H., Kellman, L.: An examination of short- and long-term air-ground temperature coupling, Global and Planetary Change 38,2003.

Benkert, St., Heidt, F., D., Schöler, D.: Calculation tool for earth-to-air heat exchangers GAEA, Building Simulation, Prague, 1997.

Cílek, V., Kašík, M.: Nejistý plamen. Dokořán, Praha, 2007.

Claesson J., Dunand A.: Heat extraction from the ground by horizontal pipes. A mathematical analysis, Swedish council for Building Research, Stockholm, 1983.

De Paepe, M., Janssens, A.: Thermo-hydraulic design of earth-air heat exchangers, Energy and Buildings 35, 2003.

Djamel Belatrache a, Saı¨d Bentouba a, Mahmoud Bourouis[2016] Numerical analysis of earth air heat exchangers at operating conditions in arid climates

Fabrizio Ascione, Laura Bellia, Francesco Minichiello-: Earth-to-air heat exchangers for Italian climates, Renewable Energy 36 (2011) 2177-2188.

Fink, C. Blümel, E., Kouba, R. Heimrath, R.: Passive Kühlkonzepte für Büro- und Verwaltungsgebäude mittels luft- bzw. Wasserdurchströmten Erdreichwärmetauschern, AEE INTEC, 2002.

Fluid properties calculator, available at url http://www.electro-

Fuxin Niu, Yuebin Yu, Daihong Yu, Haorong Li : Heat and mass transfer performance analysisand cooling capacity prediction of earth to air heat exchanger, Applied Energy 137(2015) 211-221

Gieseler, U.,D.,J., Bier, W., Heidt, F., D.: Cost efficiency of ventilation systems for low-energy buildings with earth-to-air heat exchange and heat recovery, PLEA, Toulouse, 2002.Hagentoft, C.A., Introduction to building physics, Studentliteratur, 2001.

Hellstrom, G.: Ground Heat Storage, Department of Mathematical Physics, University of Lund, Sweden, 1991.

Hens, H.: Building Physics – Heat, Air and Moisture, Ernst&Sohn, 2007.

Herkel, St.: Verwaltungsgebäude DB Netz AG in Hamm, Abslussbericht, Fraunhofer ISE, Freiburg, Germany, 2002.

Hofmeister, O., Kopecký, P., Tywoniak, J.: Sluňákov Ecological Education Centre – Basic Information, Proceedings of conference Central Europe towards Sustainable Building 2007, Prague 2007.

Hollmuller, P., Lachal, B.: TRNSYS compatible moist air hypocaust model: description and validation, Centre universitaire d’études des problèmes de l’energie, Genève, 1998.

Hollmuller, P., Lachal, B: Cooling with air-to-earth heat exchangers versus direct night cooling: a parametric study for different climates, 18th conference PLEA, Florianópolis, 2001.

Hollmuller, P., Lachal, B.: Cooling and pre-heating with buried pipe systems: monitoring, simulation and economic aspects, Energy and Buildings 33, 2001.

Hollmuller, P.: Utilisation des échangeurs air/sol pour le chauffage et le rafraîchissement des bâtiments. Mesures in situ, modélisation analytique, simulation numérique et analyse systémique, Faculté des Sciences de l'Université de Genève, 2002.

Hollmuller, P.: Analytical characterization of amplitude dampening and phase- shifting in air/soil heat-exchangers, Journal of Heat and Mass Transfer 46, 2003.

Hollmuller, P., Lachal, B., Zgraggen, J., Pampaloni, E.: Dephaseur Thermique Diffusiv – raport final, Centre universitaire d’études des problèmes de l’energie, Genève, 2004.

Hollmuller, P., Lachal, B.: Buried pipe systems with sensible and latent heat exchange: validation of numerical simulation against analytical solution and long-term monitoring, 9th conference of IBPSA, Montreal, 2005a.

Hollmuller, P., Lachal, B., Zgraggen, J., M.: Rafraichisement de batiments par dephasage thermique controlé, Proceedings of Cisbat, 2005b.

Hollmuller et al.: Potential of inertial ventilation for passive cooling in Brazilian climates, Palenc 2005, Santorini, 2005c.

Hollmuller, P.: excel routine fouriercyl.xls, from email communication during 2005d.

Hollmuller, P., Lachal, B., Zgraggen, J.,: A new ventilation and thermal storage technique for passive cooling of buildings: thermal phase-shifting, Centre universitaire d’études des problèmes de l’energie, Genève, 2006.

Hollmuller, P., Lachal, B., Zgraggen, J.,: A new heat exchange and storage technique for ventilation: controlled thermal phase-shifting, Proceedings of Heat-SET, Chambéry, 2007.

Haorong Li ,Yuebin Yu,Fuxin Niu, Michel Sha.k ,Bing Chen : Performance of a coupled cooling system with earth-to-air heat exchanger and solar chimney, Renewable Energy 62(2014)468-477

IPCC - Mezivládní panel pro změnu klimatu (kolektiv autorů): Změna klimatu 2007: Fyzikální základy. Shrnutí pro politické představitele, český překlad. Ke stažení na http://www.chmi.cz/cc/ipcc.html.

Janssen, H.: The influence of soil moisture transfer on building heat loss via the ground, Katholieke Universiteit Leuven, 2002.

Johannes Idsø, ID and Torbjørn Årethun 1,[2017] Water-Thermal Energy Production System: A Case Study from Norway Johannes

Kalagasidis, A., S., Weitzmann, P., Nielsen, T., R., Peuhkuri, R., Hagentoft, C., E., Rode, C.: The International Building Physics Toolbox in Simulink, Energy and Buildings 39, 2007.

Kramoliš, P.: Realizovaný projekt nástavby mateřské školy v Ostravě – Proskovicích, Alternativní energie 3, 2002.

Kumar, R., Kaushik, S.,C., Garg, S., N.: Heating and cooling potential of an earth-to-air heat exchanger using artificial neural network, Renewable Energy 31, 2006.

MathWorks: Writing S-functions, 2005. http://www.mathworks.com

Mihalakakou, G., Santamouris, M., Asimakopoulos, D.: Modelling the thermal performance of earth-to-air heat exchangers, Solar Energy 53, 1994.

Mihalakakou, G., Lewis, J., O., Santamouris, M.: On the heating potential of buried pipes techniques – application in Ireland, Energy and Buildings 24, 1996.

Mihalakakou, G.: On the heating potential of a single buried pipe using deterministic and intelligent techniques, Renewable Energy 28, 2003.

Lomas, J., Eppel, H.: Sensitivity analysis techniques for building thermal simulation programs, Energy and Buildings 19, 1992.

Nilsson C.A.: Preheating of Ambient Air by a System of Earth Tubes as a Heat Source for Buildings, Chalmers University of Technology, Göteborg, Sweden, 1991.

Oldenborgh, G., J.: Extraordinarily mild European autumn 2006 due to global warming?, Global Change NewsLetter 67, 2006.

Pfafferott, J.: Evaluation of earth to air heat exchangers with a standardized method to calculate energy efficiency, Energy and Buildings 35, 2003.

Pfafferott, J.: Enhancing the Design and the Operation of Passive Cooling Concepts, Fraunhofer IRB Verlag, 2004.

Rode, C.: Series of lecture notes on numerical transient heat conduction, materials for DTU course Numerical Methods for Building Energy Technology, 1997.

Santamouris, M., Asimakopoulos, D.: Passive cooling of buildings, James and James, London, 1996.

Santamouris, M., Mihalakakou, G., Argiriou, A., Asimakopoulos D.: On the performance of buildings coupled with earth to air heat exchangers, Solar Energy 54, 1995.

Salsuwanda Selamat, Akio Miyara and Keishi Kariya :Analysis of Short Time Period of Operation of Horizontal Ground Heat Exchangers, ISSN 2079-9276,Resources 2015, 4, 507-523; doi:10.3390/resources4030507

Stahl, F.: Preheating of Supply Air through an Earth Tube System – Energy demand and moisture consequences, Building Physics 2002 – 6th Nordic Symposium, 2002.

Sundberg, J.: Thermal Properties of Soils and Rocks, Chalmers University of Technology, Göteborg, Sweden, 1989.

Tywoniak, J., Morávek, P., Kopecký, P.: Zur Wohnungslüftung in Niedrigstenenergiehäusern in Tschechien, 2. Europäisches Blower Door Symposium, Kassel, 2007.

Verhoef, A. et al: Thermal properties for vineyard (EFEDA-I) and savanna (HAPEX - Sahel) sites, Agricultural and Forest Meteorology 78, 1996.

Voss, K., Kramp, M.: Zero-Energy/Emission-Buildings – Terms, Definitions and Building Practice, CESB 2007, Prague, 2007.

Vikas Bansal, Rohit Misra, Ghanshyam Das Agrawal, Jyotirmay Mathur: Performance evaluation and economic analysis of integrated earth–air–tunnel heat exchanger–evaporative cooling system, Energy and Buildings 55 (2012) 102–108.

Weitzmann, P.: A floor heating module using an S-function approach for the International Building Physics Toolbox, Department of Civil Engineering, Technical University of Denmark, 2002.


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