The effect of using two PCMs on the thermal regulation performance of BIPV systems

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Abstract

Building Integrated Photovoltaics (BIPVs is one of the most promising applications for Photovoltaic(PVs). However, when the temperature in the BIPV increases, the conversion efficiency deteriorates. APV/PCM system using Phase Change Materials(PCM) for BIPV thermal control has been experimentally and numerically studied previously. One of the main barriers for this application is how to improve the low thermal conductivity of the PCM in order to achieve a quick thermal dissipation response with longer thermal regulation in PVs. Although the metal fins inserted inside the PCM can improve the heat transfer, the thermal regulation period declines as the volume of the PCM is substituted by the metal mass of the PV/PCM system. A modified PV/PCM system integrated with two PCMs with different phase transient temperatures for improving the heat regulation needs to be investigated. The use of combinations of PCMs, each with a set of different phase transient temperatures, is expected to enhance the thermal regulation effect of the PV/PCM system and lengthen the thermal regulation time in PVs. In this study a developed PV/PCM numerical simulation model for single PCM application has been modified to predict the thermal performance of the multi-PCMs in a triangular cell in the PV/PCM system. A series of numerical simulations tests have been carried out in static state and realistic conditions in UK. The thermal regulation of the PV/PCM system with a different range of phase transient temperature PCMs has been discussed.
LanguageEnglish
Pages957-963
JournalSolar Energy Materials and Solar Cells
Volume95
DOIs
Publication statusPublished - Mar 2011

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Phase change materials
Pulse code modulation
Hot Temperature
Metals
Temperature
Fins (heat exchange)
Computer simulation
Conversion efficiency
Thermal conductivity

Cite this

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abstract = "Building Integrated Photovoltaics (BIPVs is one of the most promising applications for Photovoltaic(PVs). However, when the temperature in the BIPV increases, the conversion efficiency deteriorates. APV/PCM system using Phase Change Materials(PCM) for BIPV thermal control has been experimentally and numerically studied previously. One of the main barriers for this application is how to improve the low thermal conductivity of the PCM in order to achieve a quick thermal dissipation response with longer thermal regulation in PVs. Although the metal fins inserted inside the PCM can improve the heat transfer, the thermal regulation period declines as the volume of the PCM is substituted by the metal mass of the PV/PCM system. A modified PV/PCM system integrated with two PCMs with different phase transient temperatures for improving the heat regulation needs to be investigated. The use of combinations of PCMs, each with a set of different phase transient temperatures, is expected to enhance the thermal regulation effect of the PV/PCM system and lengthen the thermal regulation time in PVs. In this study a developed PV/PCM numerical simulation model for single PCM application has been modified to predict the thermal performance of the multi-PCMs in a triangular cell in the PV/PCM system. A series of numerical simulations tests have been carried out in static state and realistic conditions in UK. The thermal regulation of the PV/PCM system with a different range of phase transient temperature PCMs has been discussed.",
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The effect of using two PCMs on the thermal regulation performance of BIPV systems. / Huang, M. J.

Vol. 95, 03.2011, p. 957-963.

Research output: Contribution to journalArticle

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AB - Building Integrated Photovoltaics (BIPVs is one of the most promising applications for Photovoltaic(PVs). However, when the temperature in the BIPV increases, the conversion efficiency deteriorates. APV/PCM system using Phase Change Materials(PCM) for BIPV thermal control has been experimentally and numerically studied previously. One of the main barriers for this application is how to improve the low thermal conductivity of the PCM in order to achieve a quick thermal dissipation response with longer thermal regulation in PVs. Although the metal fins inserted inside the PCM can improve the heat transfer, the thermal regulation period declines as the volume of the PCM is substituted by the metal mass of the PV/PCM system. A modified PV/PCM system integrated with two PCMs with different phase transient temperatures for improving the heat regulation needs to be investigated. The use of combinations of PCMs, each with a set of different phase transient temperatures, is expected to enhance the thermal regulation effect of the PV/PCM system and lengthen the thermal regulation time in PVs. In this study a developed PV/PCM numerical simulation model for single PCM application has been modified to predict the thermal performance of the multi-PCMs in a triangular cell in the PV/PCM system. A series of numerical simulations tests have been carried out in static state and realistic conditions in UK. The thermal regulation of the PV/PCM system with a different range of phase transient temperature PCMs has been discussed.

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