Numerical humidity assessment: analysis of the thermal performance of a residential building
DOI:
https://doi.org/10.5902/2179460X74572Keywords:
Computer simulation, Thermal performance, Relative humidity, Earth-air heat exchanger (EAHE)Abstract
The earth-air heat exchanger (EAHE) is a device where the external ambient air is blown to use the ground as a heat source, through buried ducts with the aid of low power fans, thus powering the energy consumed in the building. The air at the outlet of the ducts is heated in winter and cooled in summer, providing thermal comfort conditions for indoor environments. The goal of the extensive search in recent decades has been to find solutions that can improve a building’s thermal comfort in order to provide recommendations for the design of various devices utilized in the utilization of renewable energy sources. This work aims to evaluate the results found for humidity and air temperature in a building. The objective was to create a computational model that depicts practical operating circumstances for a building’s ground-to-ground heat exchangers. These evaluations were carried out by numerical simulation with the EnergyPlus software, for which a meteorological file was created. To examine the building’s behavior in various climates, the data are shown for two typical project days: one in the summer and one in the winter.
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References
Ashrae, (2017). Thermal environmental conditions for human occupancy. American Society of Heating Refrigerating and Air Conditioning Engineers, p. 549–561.
Bénard, J.; Eymard, R.; Nicolas, X.; Chavant, C., (2005). Boiling in porous media: Model and simulations. Transport in Porous Media, 60, 1–31.
Brum, R. S., (2013). Modelagem computacional de trocadores de calor solo-ar. Dissertação (Mestrado em Modelagem Computacional), Universidade Federal do Rio Grande, Rio Grande, Brazil.
Brum, R. S., (2016) Teoria construtal e desempenho termico de trocadores de calor solo-ar. Tese (Doutorado em Engenharia Mecânica), Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.
Brum, R. S.; Rocha, L. A. O.; Vaz, J.; Dos Santos, E. D.; Isoldi, L. A., (2012). Development of simplified numerical model for evaluation of the influence of earth-air heat exchanger installation depth over its thermal potential. International Journal of Advanced Renewable Energy Research, 1, 505–514.
Brum, R. S.; Vaz, J.; Rocha, L. A. O.; Dos Santos, E. D.; Isoldi, L. A., (2013). A new computational modeling tob predict the behavior of earth-air heat exchangers. Energy and Buildings, 64, 395–402.
Brum, R. S.; Ramalho, J. V. A.; Rocha, L. A. O.; Isoldi, L. A.; Dos Santos, E. D., (2016). Transient models to analyze the influence of the air velocity and ducts diameter on the performance of earth-air heat exchangers. Energy and Buildings, 43, 503–520.
Brum, R. S.; Rodrigues, M. K.; Ramalho, J. V. A.; Rocha, L. A. O.; Isoldi, L. A.; Dos Santos, E. D., (2017). On the design of two eahe assemblies with four ducts. Defect and Diffusion Forum, 372, 31–39.
Brum, R. S.; Labat, M.; Lorente, S., (2019a). Improving the performances of earth-air heat exchangers through constructal design. International Journal of Energy Research, 43, 8822–8833.
Brum, R. S.; Ramalho, J. V. A.; Rodrigues, M. K.; Rocha, L. A. O.; Isoldi, L. A.; Dos Santos, E. D., (2019b). Design evaluation of earth-air heat exchangers with multiple ducts. Renewable Energy, 135, 1371–1385.
Candido, C.; Dear, R. J.; Lamberts, R.; Bittencourt, L., (2010). Air movement acceptability limits and. Energy and Buildings thermal comfort in Brazil’s hot humid climate zone. Building and Environment, 45, 222–229.
Crawley, D. B.; Lawrie, L. K.; Winkelmann, F. C.; Pedersen, C. O., (2001). Energyplus: creating a new-generation building energy simulation program. Energy and Buildings, 33, 319–331.
Domingues, A. M. B.; Nóbrega, E. S. B.; Ramalho, J. V. A.; Brum, R. S.; Quadros, R. S., (2021). Parameter analysis of earth-air heat exchangers over multi-layered soils in south brazil. Geothermics, 93.
EnergyPlus (2022). EnergyPlus Engineering Reference, Version 22.2.0 Documentation. U. S. Department of Energy, United States.
Estrada, E.; Labat, M.; Lorente, S.; Rocha, L. A. O., (2018). The impact of latent heat exchanges on the design of earth air heat
exchangers. Applied Thermal Engineering, 129, 306–317.
Goffart, J.; Rabouille, M.; Mendes, N. (2017). Uncertainty and sensitivity analysis applied to hygrothermal simulation of a brick building in a hot and humid climate. Journal of Building Performance Simulation, 10(1), 37–57.
Lamberts, R.; Dutra, L.; Pereira, F. O. R. (2014). Eficiência Energética na Arquitetura. São Paulo, São Paulo.
Nóbrega, E. S. B.; Brum, R. S.; Ramalho, J. V. A.; Quadros, R. S., (2020). A first study on earth-air heat exchanger in Pelotas. Revista Mundi Engenharia, Tecnologia e Gestao, 5, 1–15.
Rodrigues, M. K.; Brum, R. Da S.; ; Vaz, J.; Rocha, L.; Dos Santos, E. D.;, Isoldi, L. A., (2015). Numerical investigation about the imporvement of the thermal potential of an earth-air heat exchanger (EAHE) employng the Constructal Design method. Renewable Energy, 80, 538–551.
Strand, R. K. (1995). Heat source transfer functions and their application to low temperature radiant heating systems. Tese (Engenharia Mecânica), University of Illinois at Urbana-Champaign, Champaign, United States.
Vaz, J. (2011). Estudo experimental e numérico sobre o uso do solo como reservatório de energia para o aquecimento e resfriamento de ambientes edificados. Tese (Doutorado em Engenharia Civil), Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.
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