Passive cooling &amp; climate responsive façade design

Hoces, A.I. Prieto; Knaack, Ulrich; Auer, Thomas; Klein, Tillmann

doi:10.1016/j.enbuild.2018.06.016

Cited by 60 publications

(28 citation statements)

References 55 publications

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“…Of key importance for the economic widespread and market acceptance of photovoltaics in buildings is aesthetics, in particular its color appearance. [12][13][14][15] The additional costs for such customized BIPV solar modules vary in a vast range depending not only on the underlying study layout but also on the factors as the targeted geographical region and the system's design. [16] Following estimations, the cost offset of BIPV materials compared to traditional construction materials ranges from 5000% for replacing concrete roofs tiles [17] to 80% when replacing polished stone facades.…”

Section: Introductionmentioning

confidence: 99%

Perovskite Solar Cells with Vivid, Angle‐Invariant, and Customizable Inkjet‐Printed Colorization for Building‐Integrated Photovoltaics

Eggers

Gharibzadeh

Koch³

et al. 2022

Solar RRL

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The steadily growing market share of building‐integrated photovoltaics (BIPVs) places the aesthetics of solar modules in the focus of research and development. In this work, a colorization method based on inkjet‐printed reflective pigments is adapted for the emerging perovskite photovoltaics. Herein, not only excellent control of color impression, brightness, and pattern is demonstrated, but also angle invariant color perception, which makes the presented approach stand out among the many published colorization strategies for perovskite solar cells (PSCs). Compared to uncolored reference solar cells, bright magenta and yellow PSCs display a remarkable relative power conversion efficiency (PCE) of up to 65% and more than 11% absolute PCE. Moreover, PSCs with more BIPV‐relevant coloring patterns such as a mimic of a marble or corten steel surfaces are demonstrated. The colorization method presented is inexpensive and ready for scalable solar module production. To demonstrate the scalability of the proposed concept, a small‐area perovskite solar module (4 cm2 aperture area) in white marble optics exhibiting a PCE of almost 14% as a potential application is presented.

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Section: Introductionmentioning

confidence: 99%

Perovskite Solar Cells with Vivid, Angle‐Invariant, and Customizable Inkjet‐Printed Colorization for Building‐Integrated Photovoltaics

Eggers

Gharibzadeh

Koch³

et al. 2022

Solar RRL

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“…The cooling energy requirement of buildings is the major cause of the high load during summer. Global warming will further aggravate the situation due to the overall temperature rise worldwide [26]. The high energy requirements of buildings in Saudi Arabia during the hot summer can be fulfilled by installing PV panels on the buildings.…”

Section: Introductionmentioning

confidence: 99%

Performance Enhancement of Roof-Mounted Photovoltaic System: Artificial Neural Network Optimization of Ground Coverage Ratio

Alghamdi

2021

Energies

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Buildings in hot climate areas are responsible for high energy consumption due to high cooling load requirements which lead to high greenhouse gas emissions. In order to curtail the stress on the national grid and reduce the atmospheric emissions, it is of prime importance that buildings produce their own onsite electrical energy using renewable energy resources. Photovoltaic (PV) technology is the most favorable option to produce onsite electricity in buildings. Installation of PV modules on the roof of the buildings in hot climate areas has a twofold advantage of acting as a shading device for the roof to reduce the cooling energy requirement of the building while producing electricity. A high ground coverage ratio provides more shading, but it decreases the efficiency of the PV system because of self-shading of the PV modules. The aim of this paper was to determine the optimal value of the ground coverage ratio which gives maximum overall performance of the roof-mounted PV system by considering roof surface shading and self-shading of the parallel PV modules. An unsupervised artificial neural network approach was implemented for Net levelized cost of energy (Net-LCOE) optimization. The gradient decent learning rule was used to optimize the network connection weights and the optimal ground coverage ratio was obtained. The proposed optimized roof-mounted PV system was shown to have many distinct performance advantages over a typical ground-mounted PV configuration such as 2.9% better capacity factor, 15.9% more energy yield, 40% high performance ratio, 14.4% less LCOE, and 18.6% shorter payback period. The research work validates that a roof-mounted PV system in a hot climate area is a very useful option to meet the energy demand of buildings.

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“…The main Passive Façade structural elements include glazing, cavity, a massive wall, coating color, heat insulation, air ducts, and windows in a massive wall. According to (Prieto et al, 2018;Vučenović et al, 2013), when designing a Passive Façade project for specified climatic conditions, the designer must consider each element's technical and economic parameters. Many investigations on the main structural elements of a Passive Façade and their influence on investigators' efficiency were conducted.…”

Section: Introductionmentioning

confidence: 99%

“…Glazing has a significant impact on the accumulating efficiency of the passive façade. This point is since a double-glazed skin can reflect and absorb some part of the spectrum of solar radiation; consequently, the most efficient is the use of double-glazing skin with low-emittance in the façade (Prieto et al, 2018;Zalewski et al, 2002). Among the other most critical aspects studied in the literature are the following: Air gap (Chen et al, 2006;Du et al, 2020b;Parhizkar et al, 2020), Massive wall and Heat insulation (Hu et al, 2020;Liu et al, 2020;Nizovtsev et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Study of Four Passive Second Skin Façade Configurations as a Natural Ventilation System During Winter and Summer

Hamidi

Malha

Bah

2021

sace

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The fight against climate change is a significant challenge, resulting mainly from the linear and extensive exploitation of natural resources, particularly fossil fuels. Its impacts are now recognized. The current climate models are neither sustainable nor ecological in economic and social terms, especially as we live in a century marked by galloping demography and urbanization. Researchers worldwide have paid great attention to passive solar design strategies such as double skin or Second Skin Façade. From this point, the present work aims to contribute to a better understanding of the feasibility of using a passive façade as a useful technology for natural ventilation to achieve potential energy savings and improve thermal comfort and indoor air quality. For this purpose, a parametric study was conducted for a room with four different southern facade configurations in six Moroccan climatic zones; the difference between each lies in the vent's position in the entrance and exit. This process was done by using COMSOL Multiphysics software. Velocity and volume flow rate fields were analyzed. The proposed configurations provided an average volume flow rate between 200 m3/h and 400 m3/h for a surface of 1 m2 of southern façade with an air vent area of 0.1mx0.2m.

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Passive cooling & climate responsive façade design

Cited by 60 publications

References 55 publications

Perovskite Solar Cells with Vivid, Angle‐Invariant, and Customizable Inkjet‐Printed Colorization for Building‐Integrated Photovoltaics

Perovskite Solar Cells with Vivid, Angle‐Invariant, and Customizable Inkjet‐Printed Colorization for Building‐Integrated Photovoltaics

Performance Enhancement of Roof-Mounted Photovoltaic System: Artificial Neural Network Optimization of Ground Coverage Ratio

Study of Four Passive Second Skin Façade Configurations as a Natural Ventilation System During Winter and Summer

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