Heat Transfer Model to Predict Temperature Distribution in the Ground

Larwa, Barbara

doi:10.3390/en12010025

Cited by 32 publications

(35 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The temperature variation of the ground under the greenhouse is influenced by both the internal and external microclimate. The distribution of temperature fields in the ground, can be analyzed using mathematical models based on heat balance equations, and taking into account numerous important technical parameters, such as ground density, heat capacity, heat transfer coefficient, as well as diffusion resistance [21,22]. Computer simulations greatly support calculations of the natural temperature distribution in the ground, which in turn allows the interaction between the building and the underlying and surrounding ground to be demonstrated [23].…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of the Effect of Ground Dampness on Heat Transfer between Greenhouse and Ground

Nawalany

Sokołowski

2021

Sustainability

View full text Add to dashboard Cite

This paper deals with the problem of the influence of ground dampness on heat exchange between greenhouse and ground. The effect of humidity on the distribution of ground temperature fields was analyzed. The analysis was performed based on the analytical numerical method in the WUFI®plus software. The computational tool was used after a validation process. Research and simulations were conducted on the example of a real single-span greenhouse located in Southern Poland. The results of indoor and outdoor air temperature measurements were used to determine the boundary conditions, while the measured ground temperatures were used to compare with the results of theoretical calculations. Three variants were used for calculation analysis, assuming different levels of ground dampness. Analysis of the test results showed that during the summer period, dry ground provides 8% more thermal energy to the interior of the greenhouse than the damp ground, and provides 30% more thermal energy than wet ground. In the transition period (autumn/spring), the ground temperature fields are arranged parallel to the floor level, while the heat flux is directed from the ground to the interior of the greenhouse, regardless of the ground dampness level. During this period, the ground temperature ranges from 4.0 °C to 13.0 °C. Beneficial effect of dry ground, which contributes to maintaining an almost constant temperature under the greenhouse floor, was found in winter.

show abstract

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of the Effect of Ground Dampness on Heat Transfer between Greenhouse and Ground

Nawalany

Sokołowski

2021

Sustainability

View full text Add to dashboard Cite

show abstract

“…As numerical studies, many authors used transient 1D heat conduction equation to predict soil heat distribution vertically [10,11]. Among the proposed solutions using Carslaw-Jaeger equation by Larwa [12]. Also, detailed transient heat conduction equation has been solved to follow the ground thermal behaviour during the year [13].…”

Section: Introductionmentioning

confidence: 99%

Comparison Study Between Using Air Data And Soil Data In Predicting Soil Temperature

Hamdane¹,

Silva²,

Pires³

et al. 2021

14th WCCM-ECCOMAS Congress

View full text Add to dashboard Cite

soil in shallow depths could be used as heat sink / heat source for cooling / heating devices. To predict its thermal behaviour during year, some authors use data from soil temperature records some else use data from average yearly air temperature measurements of meteorologic stations to avoid measure soil temperature in shallow depths for long time. In this research paper, we present a comparison study about the use of soil data and the use of air data for soil temperature prediction, where transient heat conduction in semi-infinite solids is utilised in the study. We measured the soil temperature of three sites for three years in Covilha-Portugal to support the current study. Later, we create reference years of soil temperature in the three sites.

show abstract

“…The subject of heat exchange in soil has been studied, inter alia, by Radoń et al [14], Nawalany et al [15,16], Staniec [17], Martin and Canas [18], Janssen [19], Deru [20], Popiel and Wojtkowiak [21], Larwa and Kupiec [22], and Staszczuk et al [23]. In recent years, the issue of soil temperature has been very important to the design of heat pumps and soil heat exchangers which is also reflected in numerous studies [24][25][26][27][28][29]. Depending on the purpose of a building, the surrounding soil can be a heat receiver or a heat source.…”

Section: Introductionmentioning

confidence: 99%

Building–Soil Thermal Interaction: A Case Study

Nawalany

Sokołowski

2019

Energies

View full text Add to dashboard Cite

This paper presents an analysis of thermal interaction between a building and surrounding soil. The examined building was located in southern Poland. Measurements of selected indoor and outdoor air temperature parameters were made in order to determine the boundary conditions. The soil temperature measurements were conducted at 42 points. The analysis of results is divided into four periods: summer, autumn, winter, and spring. The analysis show that weather conditions significantly affect the temperature in soil, but the range of residential building impact decreases with distance, and it varies depending on the season. The residential building impact on the soil temperature is in the range of 1.2–3.3 m. This paper also includes a study of the heat flow direction in soil and a quantitative estimate of heat exchange between a building and the soil. The greatest energy losses 2082 kWh (21.24 kWh/m2) from the building to the soil were recorded in winter. In spring, the energy losses were reduced by about 38% as compared with the energy losses in winter, and the energy losses in spring were comparable to autumn.

show abstract

Heat Transfer Model to Predict Temperature Distribution in the Ground

Cited by 32 publications

References 20 publications

Numerical Analysis of the Effect of Ground Dampness on Heat Transfer between Greenhouse and Ground

Numerical Analysis of the Effect of Ground Dampness on Heat Transfer between Greenhouse and Ground

Comparison Study Between Using Air Data And Soil Data In Predicting Soil Temperature

Building–Soil Thermal Interaction: A Case Study

Contact Info

Product

Resources

About