Bifacial photovoltaic sunshade (BiPVS) is an innovative building-integrated photovoltaic (BIPV) technology. Vertically mounted BiPVS is capable of converting part of the incident solar radiation into electricity,
The resulting rate of time-temperature changes can be expressed by equation: C PV dTmod = q LW + q SW + q conv − P dτ (1) where C PV - is heat capacity of photovoltaic module, q LW -
In addition, the average heat transfer coefficient of dusty PV module is slightly higher than that of clean PV panels by 4.13%, which can be revealed by the thermal diffusivity. This work confirms
show a clear positive correlation between cooling load and indoor thermal discomfort hours, while lighting energy consumption negatively correlates with indoor thermal discomfort hours and building cooling load. In
And the average heat transfer coefficient of dusty PV modules is slightly higher than that of clean PV panels by 4.13%. On the one hand, the increase of convective heat transfer coefficient can
Results show that the convective heat transfer 14 coefficient of PV panel is not only affected by wind speed and dust density, but also related to the 15 tilt angle of panel. As the dust
The buildings with high wall reflectivity and low WWR achieve more energy savings. Solar photovoltaic (PV) shading systems are of great significance for achieving low-carbon buildings. Bifacial photovoltaics (bPV) is a promising technology that can generate electricity from both the front and rear sides of bPV modules.
Comparison of this study with the optimal energy saving solution for a single PV sunshade in Hong Kong , it is found that the energy saving rate of using PV louver is about 20% higher than that of single PV sunshade.
The coupled heat transfer process of rooftop photovoltaic shading units and indoor heat gain are analyzed. The energy-saving potential of photovoltaic rooftops compared to traditional rooftops is revealed. The energy-saving performance of photovoltaic and traditional rooftops under different roof reflectivity are summarized.
The balance between solar gains in the winter and solar exclusion in the summer in relation to the reduction of daylight determines the efficiency of the shading system.
This paper integrates bifacial photovoltaics as sunshades into buildings. The impact of installation and building factors on power generation is studied. The impact of installation factors of bPV on the energy savings is studied. The south orientation, small tilt angle and wide bPV are recommended to install.
The overall heat transfer coefficient ( U -value) (Eq. 3) and the solar heat gain coefficient (SHGC) (Eq. 4) are rates that assess the energy performance of a fenestration system in a steady state.
