Thermal transmittance effect on energy consumption of Mediterranean buildings with different thermal mass

Rodrigues, Eugénio; Fernandes, Marco S.; Gaspar, Adélio Rodrigues; Gomes, Álvaro; Costa, J.J.

doi:10.1016/j.apenergy.2019.113437

Cited by 55 publications

(36 citation statements)

References 27 publications

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“…This case study corresponds to an experimental prototype reproducing usual parameters in residential buildings ( Figure 1) and based on other existing research studies on the subject [34,35]. The prototype is an intermediate floor so slabs and ceilings can be considered adiabatic and heat transfers between the interior and the exterior occur only through the external walls.…”

Section: Case Study and Simulationmentioning

confidence: 99%

Analysis of Energy Consumption in Different European Cities: The Adaptive Comfort Control Implemented Model (ACCIM) Considering Representative Concentration Pathways (RCP) Scenarios

et al. 2020

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Reports of Intergovernmental Panel on Climate Change have set various greenhouse gas emissions scenarios, through which the evolution of the temperature of the planet can be estimated throughout the 21st century. The reduction of the emissions from the different activities carried out by mankind is crucial to mitigate greenhouse gas emissions. One of the most significant activities is users’ behaviour within buildings, particularly the use of Heating, Ventilation and Air-Conditioning systems. Modifying users’ behaviour patterns to guarantee acceptable thermal conditions inside buildings could lead to considerable energy saving percentages, and adaptive thermal comfort models could be an opportunity to achieve important savings. For this reason, this study analyzes the potential to apply adaptive thermal comfort models to use artificial air-conditioning systems by modifying setpoint temperatures. The analysis was conducted in five major European cities (Barcelona, Berlin, Bern, Rome, and Vienna) and in five climate change scenarios in the year 2050. The results showed that, in general, the energy saving achieved by adaptive strategies was larger in the cities with a greater cooling demand. Also, in both Representative Concentration Pathways (RCP) of the Fifth Assessment Report (AR5) considered, the energy saving were decreased in the cities of Barcelona and Rome, with values lower than those of the Fourth Assessment Report (AR4) scenarios considered, whereas in the cities of Berlin, Bern, and Vienna, the saving in the RCP scenarios is greater than those in the other scenarios.

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Section: Case Study and Simulationmentioning

confidence: 99%

Analysis of Energy Consumption in Different European Cities: The Adaptive Comfort Control Implemented Model (ACCIM) Considering Representative Concentration Pathways (RCP) Scenarios

et al. 2020

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“…Many studies have discussed the potential of retrofitting building envelopes in conjunction with local limitations such as climate, local policy, and occupant behaviour by using case studies in their specific locations [27][28][29][30][31]. In a case study from Egypt, a retrofitted educational building demonstrated that a simple retrofitting strategy on a building envelope can reduce the average energy consumption up to 33% even though the building is located in a hot climate [27].…”

Section: Literature Reviewmentioning

confidence: 99%

“…In a case study from Egypt, a retrofitted educational building demonstrated that a simple retrofitting strategy on a building envelope can reduce the average energy consumption up to 33% even though the building is located in a hot climate [27]. In reference [28], a case study in Italy illustrated the effect of building envelope mass on thermal transmittance. In addition, it also illustrated the correlation between the climate of each location and energy consumption.…”

Section: Literature Reviewmentioning

confidence: 99%

Energy and Economic Analysis of Tropical Building Envelope Material in Compliance with Thailand’s Building Energy Code

Chiradeja

Ngaopitakkul

2019

Sustainability

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The building envelope has a direct impact on the overall energy consumption of a building. Thus, an improvement in the building envelope using energy-efficient material can yield the desired energy performance. This study is based on the materials and compositions used in building envelopes in compliance with the building energy code of Thailand. The building under study is an educational building located in Bangkok, Thailand. Both the energy and the economic aspects of retrofitted building envelopes are discussed in this study. The energy performance was evaluated by calculating the thermal transfer value and whole building energy consumption using the building energy code (BEC) software. The simulation was done under the assumption that the building envelope in the case study building was retrofitted with different materials and compositions. The study determines the feasibility of retrofitting buildings using energy-efficient material by utilizing the discounted payback period and internal rate of return (IRR) as indicators. The results show that retrofitted building envelopes in every case can reduce the whole building energy consumption. In the best envelope configuration, energy consumption can decrease by 65%. In addition, the economic potential is also high, with an IRR value of approximately 15% and a payback period of 23 less than nine years. These finding indicate that a building envelope made with energy-efficient material can achieve good results for both energy performance and economic feasibility.

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“…This, apart from renovating overheated inner air, temper the dwelling to delay the advance of the thermal wave at daytime. This effect, commonly called the Mediterranean climate, is studied in Reference [23] for external walls of nZEB buildings, in Reference [24] with respect to the effect of high thermal insulation, and in Reference [25], regarding the effect of thermal transmittance. (4) In order to face the mild weather period successfully, it is necessary for the external envelope of the building to operate dynamically, i.e., enclosed or partially open, depending on the outside weather.…”

Section: Introductionmentioning

confidence: 99%

uhuMEBr: Energy Refurbishment of Existing Buildings in Subtropical Climates to Become Minimum Energy Buildings

2020

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Today, most countries in the world have mandatory regulations, more or less strict, regarding energy efficiency in buildings. However, a large percentage of the buildings already built were constructed under lax or non-existing regulations in this regard. Therefore, many countries are facing the energy refurbishment of their existing buildings to reduce their carbon footprint. Depending on ambient weather conditions where a building settles, its operation with respect to the achievement of maximum energy efficiency should usually be different. This happens in subtropical climates when, during the year and depending on the season, the building needs to conserve heat, evacuate it or even make an exchange with the outside to take advantage of favorable environmental conditions. This paper presents a complete methodology for conducting building energy efficiency refurbishments in subtropical climates in order to convert them into minimum energy buildings. The proposed methodology is illustrated by a case study in a dwelling that includes all the stages, from the analysis of the existing dwelling to the refurbishment works, showing the final results and the subsequent dwelling operation.

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Thermal transmittance effect on energy consumption of Mediterranean buildings with different thermal mass

Cited by 55 publications

References 27 publications

Analysis of Energy Consumption in Different European Cities: The Adaptive Comfort Control Implemented Model (ACCIM) Considering Representative Concentration Pathways (RCP) Scenarios

Analysis of Energy Consumption in Different European Cities: The Adaptive Comfort Control Implemented Model (ACCIM) Considering Representative Concentration Pathways (RCP) Scenarios

Energy and Economic Analysis of Tropical Building Envelope Material in Compliance with Thailand’s Building Energy Code

uhuMEBr: Energy Refurbishment of Existing Buildings in Subtropical Climates to Become Minimum Energy Buildings

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