Storage systems for building-integrated photovoltaic (BIPV) and building-integrated photovoltaic/thermal (BIPVT) installations: Environmental profile and other aspects

Lamnatou, Chr.; Notton, Gilles; Chemisana, Daniel; Cristofari, Christian

doi:10.1016/j.scitotenv.2019.134269

Cited by 49 publications

(7 citation statements)

References 125 publications

(102 reference statements)

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“…Complementary cooling solutions are recommended in order to achieve high productivity [17][18][19][20][21]. The literature presents a large number of papers on different solutions for improving the conversion efficiency by decreasing the temperature of the photovoltaic panels [13,15,20,[22][23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Enhancement of PV Panel Power Production by Passive Cooling Using Heat Sinks with Perforated Fins

et al. 2021

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This paper presents a numerical model regarding the passive cooling of PV panels through perforated and non-perforated heat sinks. A typical PV panel was studied in a fixed position, tilted at 45 degrees from the horizontal with the wind direction towards its backside. A challenging approach was used in order to calibrate the base case of the numerical model according to the NOCT conditions. Further validation of the accuracy of the numerical simulation consisted of a comparison between the results obtained for the base case, or heat sink, with horizontal non-perforated fins and the experiments presented in the literature. Six types of heat sink attached to the backside of the PV panel were numerically studied. The analyzed configurations focused on heat sinks with both perforated and non-perforated fins that were distributed horizontally and vertically. The CFD simulation was also conducted by modeling the air volume around the PV panel in real wind conditions. The main output parameters were the average temperature and the convective heat transfer coefficient on the front and back of the PV panel. The most important effect of cooling was achieved in low wind conditions and high levels of solar radiation. For vair = 1 m/s, G = 1000 W/m2 and ambient temperature tair = 35 °C, the percentage of maximum power production achieved 83.33% for the base case, while in the best cooling scenario it reached 88.74%, assuring a rise in the power production of 6.49%.

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Section: Introductionmentioning

confidence: 99%

Enhancement of PV Panel Power Production by Passive Cooling Using Heat Sinks with Perforated Fins

et al. 2021

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“…Regarding the assessment of the combination of solar energy and TES systems, Lamnatou et al [15] reviewed existing literature on the environmental impact of different storage systems used for building-integrated photovoltaic (BIPV) and building-integrated photovoltaic/thermal (BIPVT) installations. The storage systems analyzed were batteries, PCM, and water tanks in different countries such as Canada and the USA.…”

Section: Introductionmentioning

confidence: 99%

Environmental Assessment of Latent Heat Thermal Energy Storage Technology System with Phase Change Material for Domestic Heating Applications

Bernal¹,

Muñoz²,

Manente³

et al. 2021

Sustainability

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The emissions generated by the space and water heating of UK homes need to be reduced to meet the goal of becoming carbon neutral by 2050. The combination of solar (S) collectors with latent heat thermal energy storage (LHTES) technologies with phase change materials (PCM) can potentially help to achieve this goal. However, there is limited understanding of the environmental sustainability of LHTES technologies from a full life cycle perspective. This study assesses for the first time 18 environmental impacts of a full S-LHTES-PCM system from a cradle to grave perspective and compares the results with the most common sources of heat in UK homes. The results show that the system’s main environmental hotspots are the solar collector, the PCM, the PCM tank, and the heat exchanger. The main cause of most of the impacts is the extensive consumption of electricity and heat during the production of raw materials for these components. The comparison with other sources of household heat (biomass, heat pump, and natural gas) indicates that the S-LHTES-PCM system generates the highest environmental impact in 11 of 18 categories. However, a sensitivity analysis based on the lifetime of the S-LHTES-PCM systems shows that, when the lifetime increases to 40 years, almost all the impacts are significantly reduced. In fact, a 40-year S-LHTES-PCM system has a lower global warming potential than natural gas.

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“…In existing research, temperature mitigation for operating PV cells is realized by taking away the excessive heat through certain media. Air flow (through ventilation), water and phase change materials have been used in this regard; the three types of approaches have been widely investigated, and their effectiveness in temperature mitigation and cell efficiency enhancement have been reviewed in literature [28,29]. However, in practical applications, the heat collected from the PV cells may be further utilized [30,31].…”

Section: Introductionmentioning

confidence: 99%

Performance Improvement for Building Integrated Photovoltaics in Practice: A Review

Dai

Bai

2020

Energies

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Building integrated photovoltaic (BIPV) technologies are promising and practical for sustainable energy harvesting in buildings. BIPV products are commercially available, but their electrical power outputs in practice are negatively affected by several factors in outdoor environments. Performance improvement of BIPV applications requires mitigation approaches based on an understanding of these factors. A review was, therefore, conducted on this issue in order to providing guidance for practical applications in terms of the selection of proper PV technologies, temperature management, solar irradiation enhancement and avoidance of excessive mechanical strain. First, major types of PV cells used in BIPV applications were comparatively studied in terms of their electrical performances in laboratorial and outdoor environments. Second, temperature elevations were widely reported in outdoor BIPV applications, which may cause efficiency degradation, and the mitigation approaches may include air-flow ventilation, water circulation and utilization of phase change materials. The heat collected from the PV cells may also be further utilized. Third, mechanical strains may be transferred to the integrated PV cells in BIPV applications, and their effects on electrical performance PV cells were also discussed. In addition, the power output of BIPV systems increases with the solar irradiation received by the PV cells, which may be improved in terms of the location, azimuth and tilt of the cells and the transmittance of surface glazing. Suggestions for practical applications and further research opportunities were, therefore, provided.

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Storage systems for building-integrated photovoltaic (BIPV) and building-integrated photovoltaic/thermal (BIPVT) installations: Environmental profile and other aspects

Cited by 49 publications

References 125 publications

Enhancement of PV Panel Power Production by Passive Cooling Using Heat Sinks with Perforated Fins

Enhancement of PV Panel Power Production by Passive Cooling Using Heat Sinks with Perforated Fins

Environmental Assessment of Latent Heat Thermal Energy Storage Technology System with Phase Change Material for Domestic Heating Applications

Performance Improvement for Building Integrated Photovoltaics in Practice: A Review

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