Numerical analysis of a heat exchanger pile response in a Brazilian subtropical region
| Autor: | Roberto Pimentel de Sousa Júnior, Renato Pinto da Cunha |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
lcsh:GE1-350
Work (thermodynamics) Turbulence 020209 energy Electric potential energy 02 engineering and technology Pipe flow Current (stream) 020401 chemical engineering Heat exchanger Heat transfer 0202 electrical engineering electronic engineering information engineering Environmental science Geotechnical engineering 0204 chemical engineering Pile lcsh:Environmental sciences |
| Zdroj: | E3S Web of Conferences, Vol 205, p 05004 (2020) |
| ISSN: | 2267-1242 |
| Popis: | Ground-coupled heat exchanger systems have been used as acclimatization systems for residential and commercial buildings in many countries. Brazil is the ninth largest consumer of electrical energy in the world, for this reason, local researchers are investigating the use of the energy piles in order to reduce the consumption of electricity. Thermal response tests have been carried out on a heat exchanger pile at the geotechnical experimental site of the University of São Paulo in São Carlos city, a region of subtropical climate. Simultaneously, using the thermal properties obtained in these tests, numerical analysis has been performed to investigate the heat exchange performance of energy piles installed in this site. For this numerical analysis, the effect of soil and concrete properties, pile geometry and the flow rate on the pile thermal response were evaluated. The current paper presents the results obtained by the analysis of 67 models tested to found an optimal configuration of an energy pile through the software COMSOL, using Heat Transfer and Non-Isothermal Pipe Flow modules. From this work, it was observed that the optimal configuration was obtained for a turbulent flow condition in piles in the heat exchanger pipes. |
| Databáze: | OpenAIRE |
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