Investigating the Effect of Roof Configurations on the Performance of BIPV System

Kim, Ha-Ryeon; Boafo, Fred Edmond; Kim, Jinhee; Kim, Jun-Tae

doi:10.1016/j.egypro.2015.11.387

Cited by 12 publications

(6 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…PV integration into a building is imperative through building-integrated PV (BIPV) or building-attached/applied PV (BAPV) techniques to achieve high-energy-efficient building performance [11]. BIPV replaces the building envelope with components such as PV modules and directly absorbs solar radiation to generate electrical energy on-site [12], which is suitable for new construction. BAPV does not replace the structural component, but can be installed directly on the shell or be rooftop mounted.…”

Section: Introductionmentioning

confidence: 99%

Development and Implementation of Photovoltaic Integrated Multi-Skin Façade (PV-MSF) Design Based on Geometrical Concepts to Improve Building Energy Efficiency Performance

et al. 2023

View full text Add to dashboard Cite

This study presents the influence of multi-skin façade (MSF) design with photovoltaic (PV) systems on the thermal behaviors and power generation potential when installed on the entire southern façade of an office building model. This study considers various flexible changes in MSF system design based on geometrical concepts. For the simulation model development, this study uses the medium-sized prototype office building model, developed based on the ASHRAE 90.1-2019. A total of 24 different patterns are created based on a pyramid configuration: triangular pyramid (TP) and rectangular pyramid (RP). Changing the tilt angle for PV integrated surfaces is the main method used to compare the power generation efficiency of different MSF configurations. Results from this analysis indicate that the proposed PV-integrated MSF system with generated patterns tends to reduce cooling and heating demands. The system also presents increased PV power generation performance compared to vertically installed PV systems (i.e., the base case). The designed pattern has the highest performance in the RP configuration, 49.4% and 46.6% higher than the base case when compared based on energy yield and energy yield per unit area parameter, respectively. Increasing the cavity depth and installing the PV-integrated roof surface angle to coincide with the local latitude can achieve efficient power generation for the TP configuration, provided that only one unit is required for a pattern. As for the RP configuration, reducing the cavity depth and combining the number of units (up to nine units) on the pattern surface can achieve the best-performing power generation, while the heating and cooling demands of the perimeter zone are not significantly impacted. The results show the influence of geometrical design aspects of MSF systems on energy efficiency and the potential to generate energy from PV systems. This study is a part of developing an energy-efficient design method for multi-skin façade systems for commercial buildings.

show abstract

Section: Introductionmentioning

confidence: 99%

Development and Implementation of Photovoltaic Integrated Multi-Skin Façade (PV-MSF) Design Based on Geometrical Concepts to Improve Building Energy Efficiency Performance

et al. 2023

View full text Add to dashboard Cite

show abstract

“…Using their model, the authors observed that climate differences from cold to hot temperatures had a negligible effect on the BIPV performance degradation; however, the PV module degradation in area with very hot temperatures was rapid. Kim et al studied BIPV module temperatures with different insulations by conducting a field study on a miniature house with a tilted BIPV roofing system in Daejeon, South Korea [29]. The locations of the insulation were different: One system had insulation behind the PV modules (i.e., a warm roofing system), while another system had insulation behind the ceiling (i.e., a cold roofing system).…”

Section: Introductionmentioning

confidence: 99%

“…Considering the findings of previous studies on BIPV and PV modules in general, the issue of system temperature and power in BIPVs will persist with the growth of the BIPV industry, especially concerning how temperature affects the PV performance or the building [10]. Several short-term studies on the effect of BIPV module temperature on module performance-involving either modeling or field investigations-have been conducted [21,[28][29][30][31][32][33]; however, only a few studies have reported on the effect of PV modules installed on top of roof tile systems and how the temperature of the roof tiles with attached PV modules compares to that under roof tiles without attached PV modules. The specific weather and climate of the regions where BIPVs are installed are also important for comparison.…”

Section: Introductionmentioning

confidence: 99%

Long-Term Field Observation of the Power Generation and System Temperature of a Roof-Integrated Photovoltaic System in South Korea

et al. 2023

View full text Add to dashboard Cite

A miniature house roof-integrated photovoltaic (PV) system in South Korea was monitored for 2.5 years. System performance was evaluated through power generation, solar irradiance, and system temperature. The comparison of each month’s power generation and solar irradiance revealed a parallel correlation over the entire observation period. The internal module temperature was almost always higher than the roof rear and module rear temperatures by 1–2 and 1–5 °C, respectively, while the temperature behind the PV modules was the lowest among the three temperatures, showing that the installation of PV modules as a roofing system does not affect the temperature of the roofing system. The system temperatures affected the power conversion efficiency; a maximum of 11.42% was achieved when the system temperatures were the lowest, and a minimum of 5.24% was achieved when the system temperatures were the highest. Hence, half of the anticipated generated power was lost due to the temperature fluctuation. Overall, installing PV modules as an entire roofing system is possible with this configuration due to the minimum effect on the roof temperature. However, PV system temperature control is essential for maintaining the power generation performance of the PV modules.

show abstract

“…Results show that the system was capable of generating enough energy year round to achieve net zero energy status. Kim et al [8] used a TRNSYS model to study the performance of a BIPV/T 166 system and examine the efficiency of a PV panel on a cold and a warm roof of a low-rise residential building assuming that the BIPV/T back surface temperature is equal to the roof temperature.…”

Section: Introductionmentioning

confidence: 99%

“…The power for the hot water circulation pump is estimated using empirical equations as shown in Equation 8 and 9 [24]. P el,pump.SH =90W+2×10 -4 P nom,burner(8) P el,pump.DHW =49.4W×exp �0.0083…”

mentioning

confidence: 99%

Techno-economic assessment of photovoltaic (PV) and building integrated photovoltaic/thermal (BIPV/T) system retrofits in the Canadian housing stock

Asaee

Nikoofard

Ugursal

et al. 2017

Energy and Buildings

View full text Add to dashboard Cite

Techno-economic impact of retrofitting houses in the Canadian housing stock with PV and BIPV/T systems is evaluated using the Canadian Hybrid End-use Energy and Emission Model. Houses with south, southeast and southwest facing roofs are considered eligible for the retrofit since solar irradiation is maximum on south facing surfaces in the northern hemisphere. The PV system is used to produce electricity and supply the electrical demand of the house, with the excess electricity sold to the grid in a net-metering arrangement. The BIPV/T system produces electricity as well as thermal energy to supply the electrical as well as the thermal demands for space and domestic hot water heating. The PV system consists of PV panels installed on the available roof surface while the BIPV/T system adds a heat pump, thermal storage tank, auxiliary heater, domestic hot water heating equipment and hydronic heat delivery system, and replaces the existing heating system in eligible houses. The study predicts the energy savings, GHG emission reductions and tolerable capital costs for regions across Canada. Results indicate that the PV system retrofit yields 3% energy savings and 5% GHG emission reduction, while the BIPV/T system yields 18% energy savings and 17% GHG emission reduction in the Canadian housing stock. While the annual electricity use slightly increases, the fossil fuel use of the eligible houses substantially decreases due to BIPV/T system retrofit.

show abstract

Investigating the Effect of Roof Configurations on the Performance of BIPV System

Cited by 12 publications

References 6 publications

Development and Implementation of Photovoltaic Integrated Multi-Skin Façade (PV-MSF) Design Based on Geometrical Concepts to Improve Building Energy Efficiency Performance

Development and Implementation of Photovoltaic Integrated Multi-Skin Façade (PV-MSF) Design Based on Geometrical Concepts to Improve Building Energy Efficiency Performance

Long-Term Field Observation of the Power Generation and System Temperature of a Roof-Integrated Photovoltaic System in South Korea

Techno-economic assessment of photovoltaic (PV) and building integrated photovoltaic/thermal (BIPV/T) system retrofits in the Canadian housing stock

Contact Info

Product

Resources

About