Risk Identification in the Early Design Stage Using Thermal Simulations—A Case Study

Sajjadian, Seyed Masoud

doi:10.3390/su10010262

Cited by 11 publications

(7 citation statements)

References 5 publications

(7 reference statements)

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“…These thermal bridges are responsible for causing heat losses in winter and heat gains in summer [11,12]. In this sense, thermal bridges can lead to variations up to 30% in the heating demand, even in those buildings with envelopes having high insulation thickness [13].…”

Section: Introductionmentioning

confidence: 99%

Patents Analysis of Thermal Bridges in Slab Fronts and Their Effect on Energy Demand

et al. 2018

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Nowadays, the building sector is one of the main sources emitting pollutant gases to the atmosphere due to its deficient energy behaviour. Among the elements of the envelope, the thermal bridges are where the heat losses and gains mainly occur, depending on the season of the year. To reduce the effect of the thermal bridges, there are different patented technologies which give provide solutions. In this paper, the thermal behaviour of five patented slab front (slab-façade) thermal bridges are analysed in a case study located in the south of Spain. Moreover, the influence of the thermal bridge on the energy demand from the building analysed was evaluated, both in the current scenario and future ones (2020, 2050 and 2080). The results reveal that the use of the patents in slab fronts can mean reductions by up to 95.74% in the linear thermal transmittance. Likewise, due to the improvement of the thermal bridge of slab fronts by using the patented designs which offered the best features, a savings in the global energy demand for heating higher than 18% as well as a savings in the global energy demand for cooling higher than 2.80% could be achieved in all the time scenarios considered.

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Section: Introductionmentioning

confidence: 99%

Patents Analysis of Thermal Bridges in Slab Fronts and Their Effect on Energy Demand

et al. 2018

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“…These data are then inserted to the Psi Therm 7 software to calculate heat transfer and the chances of thermal Bridge occurring. [12] Calculation results are as seen in figure 4. Calculation results show that at 06.00 am, there is not a great difference between heat transfer values that occur on each external and internal surface temperatures, however at 11.00 pm it can be seen that the heat distribution on the external Surface is spread out more evenly and there occurs a heat storage which is then released at its peak at 1.00 pm.…”

Section: Resultsmentioning

confidence: 96%

Effects of Heat Transfer through the Walls of a Catholic Church in Semarang Indonesia Simulated with Psi-Therm Software and OTTV

Purwanto¹,

Tichelmann²

2021

cea

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Verifying the effects of heat transfer towards the rise of temperature in certain spaces which impact air control and conditioning. Climate change affects the rise of environmental temperatures, with the humid and tropical Indonesia not exempt from its effects. Many church buildings in Semarang, Indonesia, of which were previously partial to natural ventilation, have now opted to rely on Air Conditioning in order to cool their indoor temperatures. As a result, electrical consumption is now at an all-time-high, with the absence of proper adjustments needed to anticipate heat transfer from the outdoors from entering these buildings. Aside from skyrocketing expenses spent on electrical bills, the rise in energy consumption is also partial to uncontrollable energy waste. This research aims to provide a guide in designing the walls of church buildings, in order to reduce massive electrical consumption. Methods used in this research are calculations done through the software Psi-Therm as well as making considerations regarding Overall Thermal Transfer Value (OTTV) in order to provide the big picture of controllable thermal conductivity through church wall design. Research results entail a design model of heat transfer flow obstruction which will be beneficial for future church designs.

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“…Dynamic building energy simulation software is used to analyze the savings achievable on building energy use while taking into account different variables [64][65][66][67], as well as their environmental impact [68][69][70][71][72].…”

Section: Structure Of the Methods Of Analysismentioning

confidence: 99%

The Energy Saving Potential of Wide Windows in Hospital Patient Rooms, Optimizing the Type of Glazing and Lighting Control Strategy under Different Climatic Conditions

Cesari

Valdiserri²,

Coccagna³

et al. 2020

Energies

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If not properly designed, the adoption of large windows can sometimes have a negative impact on building energy demand. For this reason, aggravated by the outdated building envelope of the healthcare building stock, large fenestration systems are usually avoided in hospitals, especially in old structures. However, with appropriate glazing specifications, the adoption of wider openings can result into significant energy savings, lower costs and strong positive effects on patients and staff well-being. The present study investigates how different window sizes and types of glazing affect heating, cooling and lighting energy demand in a hospital patient room. The objective is to evaluate the energy savings that may be obtained when installing larger windows and to identify the glazing properties allowing one to reach the maximum energy reductions. Simulations were carried out using nine diverse glazing systems, already available on the market, and their energy performance was evaluated in relation to two different window areas: a common size opening, characterized by a 25% Window-to-Wall Ratio (WWR), and a floor to ceiling window, with 77% WWR. The analysis was conducted taking into consideration four different orientations in four Italian cities, supposing two artificial lighting control strategies. The results highlighted how the adoption of wider windows with appropriate glazings and a daylight-linked dimming lighting control strategy may lower the primary energy demand up to 17%.

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Risk Identification in the Early Design Stage Using Thermal Simulations—A Case Study

Cited by 11 publications

References 5 publications

Patents Analysis of Thermal Bridges in Slab Fronts and Their Effect on Energy Demand

Patents Analysis of Thermal Bridges in Slab Fronts and Their Effect on Energy Demand

Effects of Heat Transfer through the Walls of a Catholic Church in Semarang Indonesia Simulated with Psi-Therm Software and OTTV

The Energy Saving Potential of Wide Windows in Hospital Patient Rooms, Optimizing the Type of Glazing and Lighting Control Strategy under Different Climatic Conditions

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