A group of researchers in China has developed a new design for vacuum integrated photovoltaic (VPV) curtain walls, which they claim can efficiently combine PV power generation and thermal insulation for the building.
What is photovoltaic curtain wall?
Photovoltaic Curtain Wall generates energy in the building implementing solar control by filtering effect, avoiding infrared and UV irradiation to the interior.
Can vacuum integrated photovoltaic curtain walls reduce energy consumption?
Scientists in China have outlined a new system architecture for vacuum integrated photovoltaic (VPV) curtain walls. They claim the new design can reduce building energy consumption and yield more surplus power generation electricity.
What is a PV curtain wall?
The PV curtain wall is the most typical one in the integrated application of PV building. It combines PV power generation technology with curtain wall technology, which uses special resin materials to insert solar cells between glass materials and convert solar energy into electricity through the panels for use by enterprises.
Are PV curtain walls good for commercial buildings?
Compared with ordinary curtain walls, PV curtain walls can not only provide clean electricity, but also have the functions of flame retardant, heat insulation, noise reduction and light pollution reduction, making it the better wall material for glass commercial buildings. (1) On-Grid PV Curtain Wall Power Generation Schematic Diagram
How does a curtain wall reduce energy consumption?
However, the curtain wall with exhaust airflow acts as a thermal buffer layer, more efficiently reducing heat loss through the facade at lower ambient temperatures. Consequently, the energy consumption reduction ratio decreases from 25.65 to 2.77 % with varying outdoor temperatures.
By contrast. VPV curtain walls with low PV coverage may have overheating issues, but may help the building require less energy for lighting and heating. “Thus, the single-objective optimal design of the VPV curtain walls is unable to balance its restrictive and even contradictory functions,” they stated.