Earth temperatures and underground buildings

Givoni, Baruch; Katz, L.

doi:10.1016/0378-7788(85)90011-8

Cited by 66 publications

(31 citation statements)

References 5 publications

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“…[7]. The boundary condition can take two forms depending on the available data [8]. If the ground surface temperature is known, its temporal variation is the boundary condition.…”

Section: Introductionmentioning

confidence: 99%

A new modeling approach for improved ground temperature profile determination

et al. 2016

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a b s t r a c tThe knowledge of the ground temperature profile with respect to time and depth is very important in many technological fields like geothermal heat pumps, solar energy systems and geotechnical applications. Many researches were performed in the past in order to evaluate this profile. The most common ones, known as energy balance models, use the energy balance equation as a boundary condition. Unfortunately the performance of these models strongly depends on an accurate estimation of several input factors. The objective of this paper is to develop an improved model for the prediction of the ground temperature profile in which the energy balance equation at the ground surface is supplemented by an empirical correlation for the annual average ground surface temperature calculation. This model is less sensitive to uncertainties of input factors. Furthermore, unlike the previous models, a periodic variation of the sky temperature is introduced instead of a previously assumed constant value. The model is validated against measured data in a site located in Varennes (Montreal-Canada) and two further sites, Fort Collins (Colorado) and Temple (Texas) in the U.S.A.

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“…[7]. The boundary condition can take two forms depending on the available data [8]. If the ground surface temperature is known, its temporal variation is the boundary condition.…”

Section: Introductionmentioning

confidence: 99%

A new modeling approach for improved ground temperature profile determination

et al. 2016

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“…The undisturbed earth temperature models have been developed; some are based on multiyear measurements (Givani and Katz [14] and Mihalakakau et al [15]) which describe the ground temperatures at various depths. Mihalakakau et al [16] further developed a model that considered the ambient climatic conditions.…”

Section: Shaded Area Is the Extended Comfort Zonementioning

confidence: 99%

Simulation of a passive ground-coupled cooling system for a room in a hot humid climate

Onyango

2012

WIT Transactions on Ecology and the Environment

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The US government has set a target of reducing CO 2 emissions by 20% below the 2005 targets by the year 2020. Literature review reveals that residential buildings contribute over 20% of the total emissions mainly used for space heating, cooling, water heating and lighting. In hot humid climates, the concern is mainly for cooling and hot water that account for over 50% of the total residential energy consumption in South Florida as pointed out by Fairey and Parker (in Updated Miscellaneous Electricity Loads and Appliance Energy

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“…A literatura sobre o comportamento térmico do solo no decorrer do tempo é um importante embasamento teórico no estudo de TCSA e pode ser encontrada, por exemplo, em [3,4,5,6,7,8,9]. Por outro lado, importantes recomendações de leitura sobre o princípio de funcionamento do TCSA podem ser visualizadas em [10,11,12].…”

Section: Introductionunclassified

Usando séries temporais obtidas experimentalmente como condições de contorno para a simulação numérica de trocadores de calor solo-ar

Rodrigues

Gonçalves

Brum³

et al. 2017

Sci. Plena

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O Trocador de Calor Solo-Ar (TCSA) é um sistema que propicia redução no consumo de energia elétrica em equipamentos de condicionamento de ar tradicionais através de uma melhoria da condição térmica no interior de edificações. Dessa forma, o presente trabalho tem a finalidade de utilizar a ferramenta Boundary Profiles, disponível no software FLUENT, para promover a inserção de dados experimentais como condições de contorno para a modelagem computacional de TCSA, diferentemente do que vinha sendo feito em trabalhos anteriores encontrados na literatura. Essa proposta é uma contribuição científica importante na parte metodológica da modelagem computacional de TCSA, pois permite que dados experimentais de temperatura, ao longo do tempo, sejam introduzidos diretamente no modelo computacional, ou seja, sem a necessidade de qualquer técnica de ajuste estatístico. Com isso, os resultados mostram que os dados obtidos foram gerados de forma mais satisfatória pelo modelo computacional, observando-se reduções nos erros numéricos de até 19%, evidenciando maiores aproximações com resultados experimentais presentes na literatura. Essa qualidade na aproximação dos resultados foi atestada através do estudo de erros numéricos, que também é uma contribuição deste trabalho.

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Earth temperatures and underground buildings

Cited by 66 publications

References 5 publications

A new modeling approach for improved ground temperature profile determination

A new modeling approach for improved ground temperature profile determination

Simulation of a passive ground-coupled cooling system for a room in a hot humid climate

Usando séries temporais obtidas experimentalmente como condições de contorno para a simulação numérica de trocadores de calor solo-ar

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