The Experts below are selected from a list of 765 Experts worldwide ranked by ideXlab platform
Koray Ulgen - One of the best experts on this subject based on the ideXlab platform.
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an approach for energy modeling of a building integrated photovoltaic bipv Trombe Wall system
Energy and Buildings, 2013Co-Authors: Basak Kundakci Koyunbaba, Zerrin Yilmaz, Koray UlgenAbstract:Abstract In this paper, an attempt has been made to validate the simulation model with experimental results of a model BIPV Trombe Wall built in Izmir, Turkey. An energy analysis for determining the performance of a BIPV Trombe Wall integrated to the facade of a room has been carried out. The analysis is based on transient condition. Computational fluid dynamics (CFD) has been applied to predict the temperature and velocity distribution in the test room model. The simulations for two-dimensional model of BIPV Trombe Wall system have been carried out for February 4–7th, 2008. The temperature and velocity distribution of the BIPV Trombe Wall system are obtained from the simulation results. The simulation results and the measured values of surface temperatures of PV module and thermal Wall; indoor, inter-space, inlet and outlet air temperatures have been compared and it is seen that they are in good agreement. The experimental results also show that 10% of solar radiation transmittance has been supplied by using a semi-transparent a-Si solar cell. Thus, thermal energy input to the system increases compared to other BIPV systems. Meanwhile, the experimental daily average electrical and thermal efficiency of this system can reach 4.52% and 27.2% respectively.
Frank De Troyer - One of the best experts on this subject based on the ideXlab platform.
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bioclimatic prosthesis experimental dataset for a low cost Trombe Wall to existing social housing refurbishment for an intermediate valley chillan city in the south of chile
Data in Brief, 2020Co-Authors: Leonardo Agurto, Karen Allacker, Adelqui Fissore, Cristobal Agurto, Frank De Troyer, Boris RebolledoAbstract:Abstract This dataset is part of the article entitled “Design and experimental study of a low-cost prefab Trombe Wall to improve indoor temperatures in social housing in the Biobio Region in Chile” [1] , [2] . The dataset represents the outcome of experimental measurements during a 1-year monitoring campaign to assess the performance of an adaptable and low-cost prefabricated Trombe Wall (TW) with a vertical water storage system. The experiments include periods with mobile insulation during winter nights and external shading during summer which were added to test their effect on the thermal performance. Temperature sensors were used to measure and compare the temperature in two test cells: one with and one without the TW. Following the National Chilean Standard [3] , the experiment was done in the interior valley (Chillan), a Mediterranean climate (Csb), according to the Koppen climate classification [4] . The two test cells were designed to represent the most used area of a social housing unit in combination with the most widely used type of window in north facades in the region. One test cell was built exactly as the social housing unit, while the second test cell included a low-cost Trombe Wall. Five temperature sensors were installed in the test cells. The thermal performance of the TW was monitored and analysed for the first time in Chile, providing insights in the thermal performance of the TW and proving the potential effectiveness of seasonal variations to improve winter and summer performances.
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design and experimental study of a low cost prefab Trombe Wall to improve indoor temperatures in social housing in the biobio region in chile
Solar Energy, 2020Co-Authors: Leonardo Agurto, Karen Allacker, Adelqui Fissore, Cristobal Agurto, Frank De TroyerAbstract:Abstract A renewed interest in bioclimatic strategies for building retrofitting is noticed because more than 40% of the total annual world energy consumption is used in buildings. In Chile, the social housing stock is more than 5.5 million units built with government subsidies. Thermal regulations improvement started in 2000, nevertheless, solar passive strategies are still not present on the immediate retrofitting agenda. The Bioclimatic Prosthesis Project aims to design-develop prefabricated small scale passive solar systems for the refurbishment of social housing reducing their energy use. These systems should be affordable and easy to build and install. This paper focuses on an adaptable and low-cost prefabricated Trombe Wall with a vertical storage system. Mobile insulation during winter nights and external shading during summer were also tested. The system was built and installed in a test cell similar to the most used area of a social housing. The thermal efficiency of it, was monitored and compared to a similar test cell without the passive component. Two different microclimate scenarios were tested: in the coast and in the interior valley. Results show the addable Trombe Wall can reduce energy demands and winter firewood consumption by nearly 33%, increasing the indoor temperature in 5 °C in the better cases measured during the cold season. In winter, the indoor thermal comfort hours are increased by 69.35% for the city in the central valley (Chillan). For the coastal city (Coronel), the results were 56.29%. In summer, the comfort hours were also increased by 10% on the coast, and in almost 19.5% in the interior valley, adding an external shading element to solve the overheating risk.
Anabela Paiva - One of the best experts on this subject based on the ideXlab platform.
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Influence of Air Vents Management on Trombe Wall Temperature Fluctuations: An Experimental Analysis under Real Climate Conditions
'MDPI AG', 2021Co-Authors: Ana Briga-sá, José Boaventura-cunha, João Lanzinha, Anabela Paiva, Luís FernandesAbstract:The Trombe Wall is a passive solar system that can improve buildings energy efficiency. Despite the studies already developed in this field, more research is needed to assess the possibility of its integration in buildings avoiding user intervention. In this study, the influence of air vent management and materials’ heat storage capacity upon its thermal performance, particularly in the temperature fluctuation and indoor conditions, was discussed. Comparing two days with similar solar radiation (SR) for non-ventilated (NVTW) and ventilated (VTW) Trombe Walls, a differential of 43 °C between the external surface temperature and the one in the middle of the massive Wall was verified for NVTW, while for VTW this value was 27 °C, reflecting the heat transfer by air convection, which reduced greenhouse effect, solar absorption and heat storage. A cooling capacity greater than 50% was verified for VTW compared to NVTW during night periods. An algorithm for the Trombe Wall’s automation and control was proposed considering SR as variable. Air vents and external shading devices should be open when SR exceeds 100 W/m2 and closed for 50 W/m2 to obtain at least 20 °C inside the room. Closing for 50 W/m2 and opening for values lower that 20 W/m2 is suggested for summer periods
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An experimental analysis of the Trombe Wall temperature fluctuations for high range climate conditions: Influence of ventilation openings and shading devices
Energy and Buildings, 2017Co-Authors: José Boaventura-cunha, João Lanzinha, Anabela PaivaAbstract:Abstract Despite the studies already developed about Trombe Walls, more research work is needed to contribute to the knowledge about their behaviour and optimize it according to the specific characteristics of each climatic region. The ventilation openings and the shading device operation decisively influence the temperatures fluctuation along the system and that impact should be discussed. In this context, a test cell with a classical Trombe Wall was submitted to real climatic conditions in a Portuguese city. The effect of ventilation openings and shading devices in the temperatures fluctuation was analysed. The temperatures in the air layer and along the massive Wall presented a similar oscillation pattern and exceeded 60 °C without ventilation and shading devices. For this configuration, temperature values at the top of the air layer were always higher than those obtained at the base and a differential of 19 °C was achieved. The temperature fluctuation across the massive Wall was not proportional to its thickness due to its heat storage capacity. When the ventilation system was closed and the shading device was not activated, the temperature inside the test cell exceeded the outside temperature value in 9 °C, showing the system ability to store and release heat.
Leonardo Agurto - One of the best experts on this subject based on the ideXlab platform.
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bioclimatic prosthesis experimental dataset for a low cost Trombe Wall to existing social housing refurbishment for an intermediate valley chillan city in the south of chile
Data in Brief, 2020Co-Authors: Leonardo Agurto, Karen Allacker, Adelqui Fissore, Cristobal Agurto, Frank De Troyer, Boris RebolledoAbstract:Abstract This dataset is part of the article entitled “Design and experimental study of a low-cost prefab Trombe Wall to improve indoor temperatures in social housing in the Biobio Region in Chile” [1] , [2] . The dataset represents the outcome of experimental measurements during a 1-year monitoring campaign to assess the performance of an adaptable and low-cost prefabricated Trombe Wall (TW) with a vertical water storage system. The experiments include periods with mobile insulation during winter nights and external shading during summer which were added to test their effect on the thermal performance. Temperature sensors were used to measure and compare the temperature in two test cells: one with and one without the TW. Following the National Chilean Standard [3] , the experiment was done in the interior valley (Chillan), a Mediterranean climate (Csb), according to the Koppen climate classification [4] . The two test cells were designed to represent the most used area of a social housing unit in combination with the most widely used type of window in north facades in the region. One test cell was built exactly as the social housing unit, while the second test cell included a low-cost Trombe Wall. Five temperature sensors were installed in the test cells. The thermal performance of the TW was monitored and analysed for the first time in Chile, providing insights in the thermal performance of the TW and proving the potential effectiveness of seasonal variations to improve winter and summer performances.
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design and experimental study of a low cost prefab Trombe Wall to improve indoor temperatures in social housing in the biobio region in chile
Solar Energy, 2020Co-Authors: Leonardo Agurto, Karen Allacker, Adelqui Fissore, Cristobal Agurto, Frank De TroyerAbstract:Abstract A renewed interest in bioclimatic strategies for building retrofitting is noticed because more than 40% of the total annual world energy consumption is used in buildings. In Chile, the social housing stock is more than 5.5 million units built with government subsidies. Thermal regulations improvement started in 2000, nevertheless, solar passive strategies are still not present on the immediate retrofitting agenda. The Bioclimatic Prosthesis Project aims to design-develop prefabricated small scale passive solar systems for the refurbishment of social housing reducing their energy use. These systems should be affordable and easy to build and install. This paper focuses on an adaptable and low-cost prefabricated Trombe Wall with a vertical storage system. Mobile insulation during winter nights and external shading during summer were also tested. The system was built and installed in a test cell similar to the most used area of a social housing. The thermal efficiency of it, was monitored and compared to a similar test cell without the passive component. Two different microclimate scenarios were tested: in the coast and in the interior valley. Results show the addable Trombe Wall can reduce energy demands and winter firewood consumption by nearly 33%, increasing the indoor temperature in 5 °C in the better cases measured during the cold season. In winter, the indoor thermal comfort hours are increased by 69.35% for the city in the central valley (Chillan). For the coastal city (Coronel), the results were 56.29%. In summer, the comfort hours were also increased by 10% on the coast, and in almost 19.5% in the interior valley, adding an external shading element to solve the overheating risk.
Zerrin Yilmaz - One of the best experts on this subject based on the ideXlab platform.
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an approach for energy modeling of a building integrated photovoltaic bipv Trombe Wall system
Energy and Buildings, 2013Co-Authors: Basak Kundakci Koyunbaba, Zerrin Yilmaz, Koray UlgenAbstract:Abstract In this paper, an attempt has been made to validate the simulation model with experimental results of a model BIPV Trombe Wall built in Izmir, Turkey. An energy analysis for determining the performance of a BIPV Trombe Wall integrated to the facade of a room has been carried out. The analysis is based on transient condition. Computational fluid dynamics (CFD) has been applied to predict the temperature and velocity distribution in the test room model. The simulations for two-dimensional model of BIPV Trombe Wall system have been carried out for February 4–7th, 2008. The temperature and velocity distribution of the BIPV Trombe Wall system are obtained from the simulation results. The simulation results and the measured values of surface temperatures of PV module and thermal Wall; indoor, inter-space, inlet and outlet air temperatures have been compared and it is seen that they are in good agreement. The experimental results also show that 10% of solar radiation transmittance has been supplied by using a semi-transparent a-Si solar cell. Thus, thermal energy input to the system increases compared to other BIPV systems. Meanwhile, the experimental daily average electrical and thermal efficiency of this system can reach 4.52% and 27.2% respectively.
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an approach for energy conscious renovation of residential buildings in istanbul by Trombe Wall system
Building and Environment, 2008Co-Authors: Zerrin Yilmaz, Arch Basak KundakciAbstract:Turkey has a great potential of solar energy, which is the primary source of renewable energy; however, sufficient benefit cannot be obtained from this clean energy source. In Turkey, 36% of the total energy consumed in buildings is used for heating. Due to the lack of regulations in encouraging the solar energy utilization in buildings, the heating energy consumption plays an important role in the energy economy of our country. Therefore, energy conservation methods become necessary. Energy conservation is important for the existing buildings as for the new buildings. In this study, the south facade of a flat in an existing building in Istanbul in Turkey is recommended to be renovated by the application of Trombe Wall principle, which is a well-known indirect passive solar gain system. An approach is proposed for this application and the comparison of the existinsg facade with the renovated facades has been made according to thermal performances and hourly variations of Wall interior temperatures. The results of this theoretical application study are given in this paper.
