Improved Energy Management in an Intermittently Heated Building Using a Large Broiler House in Central Europe as an Example

Nawalany, Grzegorz; Sokołowski, Paweł

doi:10.3390/en13061371

Cited by 13 publications

(14 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A similar approach was used in this study (constant dampness level in the ground profile). The applied WUFI ® plus calculation tool was used repeatedly for non-stationary analyses, taking the coupling between the building and the ground into account [10,27,[30][31][32][33][34].…”

Section: Discussionmentioning

confidence: 99%

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

Nawalany

Sokołowski

2021

Sustainability

Self Cite

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: Discussionmentioning

confidence: 99%

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

Nawalany

Sokołowski

2021

Sustainability

Self Cite

View full text Add to dashboard Cite

show abstract

“…The location of the building and the prevailing climate primarily determine the energy performance of buildings and the requirements placed on them, from the perspective of thermal protection and energy efficiency [25]. The specific mode of operation of agricultural buildings, especially cyclic use, can be a positive feature in terms of the possibility of technological and functional modifications [14,26,27]. The results of analyzing the influence of location on the energy management of the studied buildings showed that the external climate significantly determined the amount of energy expenditure for heating purposes.…”

Section: Discussionmentioning

confidence: 99%

“…The significant influence of ventilation on shaping the interior microclimate was demonstrated in the work of Verboven et al [13]. The subject of broiler houses was also discussed in recent years, when the results of the impact of the length of the technological break between production cycles on the energy of the building were developed [14]. Martin and Canas [15] analyzed the benefits of storing wine in recessed cellars.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of the Impact of the Location of a Commercial Broiler House on Its Energy Management and Heat Exchange with the Ground

et al. 2021

Self Cite

View full text Add to dashboard Cite

This paper addresses the impact of location on energy management and ground heat transfer in a commercial large-scale broiler house. Four locations in Europe were selected for analysis: Krakow (Poland), Vienna (Austria), Modena (Italy), and Oslo (Norway). An analysis of the impact of location on energy management was performed using the numerical method of computing elemental balances (MEB). WUFIplus® computer software was used to assist in the calculation process. Computer simulations of the effects of location on selected technical factors were performed after validating the computational model. The complex area of building and land was divided into cuboidal balance–difference elements using model discretization. Energy and temperature balance calculations were performed for each balance–difference element assuming a time step every 60 min. Validation of the computational model was performed based on the measured temperature inside and outside the broiler house. The variation in outdoor climate significantly affected the energy flow through the building envelope and ventilation system. Providing that the same material and construction solutions are adopted, a building located in the south of Europe requires 43% less energy for heating compared to a building located in the northern part of the continent. Due to it having the highest solar radiation, the highest energy gains were obtained for the building located in Modena. The buildings located in Krakow and Vienna had a 50% lower yield of thermal energy from the external environment. The percentage of land in the energy balance of the studied building ranged from 8.00 to 8.56%, depending on location. The highest energy gains were obtained for the building located in Modena (4112.8 kWh/a). The buildings located in Krakow and Vienna were characterized by a heat energy yield from the external environment that was two times lower. For the site located in Oslo, it was found that the largest thermal energy gain came from the ground medium located under and surrounding the broiler house (1137 kWh/a). The location of the broiler house significantly affects year-round heating needs. The building located in Oslo required 677,207.2 kWh/a of energy for heating purposes.

show abstract

“…Agricultural buildings used periodically allow numerous technological and operational modifications. They can contribute to rational management of energy necessary to maintain a given building type [28,29]. Current state of knowledge shows that the share of the ground in the total energy balance of residential and industrial buildings is about 5-10% [17].…”

Section: Discussionmentioning

confidence: 99%

Analysis of Energy Exchange with the Ground in a Two-Chamber Vegetable Cold Store, Assuming Different Lengths of Technological Break, with the Use of a Numerical Calculation Method—A Case Study

Sokołowski

Nawalany

2020

Energies

Self Cite

View full text Add to dashboard Cite

The paper deals with the impact of the technological break duration during the cold storage cycle on the energy demand of the cold store for vegetables and fruit and the temperature distribution in the ground under the cold store. The studied facility was a two-chamber vegetable cold store located in southern Poland used to store carrots (Daucus carota) for nine months a year. The experiments were conducted for 12 months (01.05.2017–30.04.2018). The technological break during this period lasted three months (from 1 July 2018 to 30 September 2018). Continuous measurements (with 1-h frequency) were made in order to determine the boundary conditions for numerical analysis. The measured parameters included indoor air temperature, outdoor air temperature, ground temperature under the building and in its vicinity. There were 22 measuring points andPT100 sensors were used. The numerical analysis was based on the elementary balances method. WUFIplus® software was used as a calculation supporting tool. The numerical analysis was conducted for 14 calculation variants, with different duration of technological break. The calculation model validation was performed and the results showed a good correlation with the experimental data. The results of experimental studies and of calculations showed a significant impact of the technological break duration on the soil distribution in the ground and the building energy demand. A technological break of less than 4 weeks is the most optimal in the summer. The technological break longer than 4 weeks significantly affects the cooling energy demand in the first days of the cooling cycle and significantly extends the time necessary for the ground and the floor to reach the optimum temperature. The analysis of the floor temperature results (points A1–C1) showed that the technological break longer than four weeks causes the average floor temperature to exceed 4.0 °C. Therefore, the optimum solution is technological break lasting 7–35 days. Absence of technological break results in a decrease of energy gains from the ground by 20% relative to a three-month technological break. The impact of technological break duration was clearly seen in terms of energy losses from the cold store to the ground. In case of a 91-day technological break, the energy losses to the ground were 1289.5 kWh/a, while in case of absence of technological break this value was ninefold lower (147.5 kWh/a).

show abstract

Improved Energy Management in an Intermittently Heated Building Using a Large Broiler House in Central Europe as an Example

Cited by 13 publications

References 14 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

Numerical Analysis of the Impact of the Location of a Commercial Broiler House on Its Energy Management and Heat Exchange with the Ground

Analysis of Energy Exchange with the Ground in a Two-Chamber Vegetable Cold Store, Assuming Different Lengths of Technological Break, with the Use of a Numerical Calculation Method—A Case Study

Contact Info

Product

Resources

About