Shading analysis for rooftop BIPV embedded in a high-density environment: A case study in Singapore

Zomer, Clarissa Debiazi; Nobre, A.; Reindl, Thomas; Rüther, Ricardo

doi:10.1016/j.enbuild.2016.04.010

Cited by 44 publications

(14 citation statements)

References 4 publications

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“…BIPVs integrated into roofs have a great potential for harvesting solar radiation. However, there are some design challenges such as partial shading, which requires a detailed shading analysis during the design phase [8]. In hot climates, BIPVs in roofs may experience excessive heat, which reduces their efficiency.…”

Section: Bipvs Concept and Applicationsmentioning

confidence: 99%

Solar and Shading Potential of Different Configurations of Building Integrated Photovoltaics Used as Shading Devices Considering Hot Climatic Conditions

Asfour

2018

Sustainability

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This study investigates the use of building-integrated photovoltaics (BIPVs) as shading devices in hot climates, with reference to the conditions of Saudi Arabia. It used parametric numerical modelling to critically appraise the potential of eight design configurations in this regard, including vertical and horizontal shading devices with different inclination angles. The study assumed that the examined shading devices could be entirely horizontal or vertical on the three exposed facades, which is common practice in architecture. The study found that the examined configurations offered different solar and shading potentials. However, the case of horizontal BIPV shading devices with a 45° tilt angle received the highest amount of annual total insolation (104 kWh/m2) and offered effective window shading of 96% of the total window area on average in summer. The study concluded that, unlike the common recommendation of avoiding horizontal shading devices on eastern and western facades, it is possible in countries characterised with high solar altitudes such as Saudi Arabia to use them effectively to generate electricity and provide the required window shading.

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Section: Bipvs Concept and Applicationsmentioning

confidence: 99%

Solar and Shading Potential of Different Configurations of Building Integrated Photovoltaics Used as Shading Devices Considering Hot Climatic Conditions

Asfour

2018

Sustainability

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“…In Europe, more than 44% of the new installations in 2017 were on rooftops where shading effects of the urban environment are not always avoidable. Whereas in early PV applications sites were carefully selected to be as shade-free as possible, it is expected that with the decreasing prices of PV systems and the spread of new Building Integrated PV (BIPV) applications, PV will increasingly be installed on surfaces where the effect of shading is of considerable importance (Zomer et al, 2016;Zomer and Rüther, 2017).…”

Section: Introductionmentioning

confidence: 99%

An unsupervised method for identifying local PV shading based on AC power and regional irradiance data

et al. 2018

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“…Systems are integrating/installing solar panels on the roof and/or side walls of a building to meet the energy demand of the building. The studies on power generation characteristics or economy assessment of BIPV considering the climate condition in Singapore [4], Malaysia [5] and Brazil [6] were reported. In addition, the environmental assessment by Life Cycle Assessment of BIPV was also reported [7] [8] [9].…”

Section: Introductionmentioning

confidence: 99%

Energy Characteristics of an Integrated Power Generation System with Photovoltaic and Fuel Cell

Nishimura¹,

Tanikaga²,

Hirota³

et al. 2018

SGRE

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An integrated energy system (with photovoltaic (PV) and fuel cell (FC) for building) is proposed and assessed in term of its energy self-sufficiency rate in seven cities (Nagoya, Toyota, Tajimi, Takayama, Ogaki, Hamamatsu, Shizuoka) in Tokai region in Japan in this paper. In this work, it is considered that the electricity requirement of the building for household users is provided by a building integrated photovoltaic (BIPV) system and the gap between the energy demand and BIPV supply is fulfilled by the FC. The FC is powered by the electrolytic H 2 produced when PV power was in surplus. Based on the study of applying the proposed system in seven cities, which clarifies the effectiveness of the integrated BIPV, electrolytic H 2 and FC power generation system, a universal system model has been developed in this paper. It has been observed that the monthly power production from BIPV as well as FC system are higher in spring and summer, while they are both lower in autumn and winter at all considered locations. The self-sufficiency rate of the FC system is higher with decreasing households' number and it has been observed that 16 is the most appropriate number of households in a building, whose electricity demand could be fully covered by the integrated PV and FC system. Due to its climate condition, Hamamatsu is the best city in the region for installing the proposed system. The correlation between the households' number and self-sufficiency rate of the FC system per solar PV installation area can be expressed by the regression curve in the form of y = ax −b well.

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Shading analysis for rooftop BIPV embedded in a high-density environment: A case study in Singapore

Cited by 44 publications

References 4 publications

Solar and Shading Potential of Different Configurations of Building Integrated Photovoltaics Used as Shading Devices Considering Hot Climatic Conditions

Solar and Shading Potential of Different Configurations of Building Integrated Photovoltaics Used as Shading Devices Considering Hot Climatic Conditions

An unsupervised method for identifying local PV shading based on AC power and regional irradiance data

Energy Characteristics of an Integrated Power Generation System with Photovoltaic and Fuel Cell

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