NDJ Sustainable
Engineering,  LLC

BIPVT

We are working toward net-zero energy buildings through harvesting solar energy and improving energy efficiency of building envelope!

Building Integrated Photovoltaic Thermal System (BIPVT)

We are conducting intensive research and development to validate the manufacturing and integration method.

    Performance

    The purpose of the panel performance testing is to assess the efficiency of the BIPVT panels. The control panel is comprised of a PV module alone. For each test, the two panels to be tested will be placed upon a controlled surface, and systematically, temperature, voltage, current, solar irradiance, and flow rate measurements will be taken for each panel. For the PV/FGM panel, a water flow system will be introduced. The flow rate and water temperature will be examined so that the hot water heating efficiency can be calculated.

    A multifunctional environmental chamber in the Carleton Laboratory will be used for performance test. The chamber is designed with a high standard of airproof and waterproof performance, so that the air flow and water flow can be accurately controlled and quantitatively examined. The intake air flow can be room air and vapor to simulate different humidities and to produce condensation within the chamber. The test space will be adjustable for different types of tests. A removable wall is installed within the chamber to divide the test space. A luminary mounting system is mounted to a slotted channel rail, so that different target test areas can be used with adjustable irradiation concentration.

    We will set up performance tests for both the control panels and our new panels. For each test, the panels to be tested will be placed upon a controlled surface within the environmental chamber and systematically, temperature, voltage, current, solar irradiance, and flow rate measurements will be taken for each panel with a data acquisition system. For the photovoltaic thermal panel, a water/air flow system will be introduced. The flow rate and temperature will be examined so that the heat collection efficiency can be monitored. Because the environmental chamber enables us to reproduce most climate conditions on the earth, we will investigate the performance of the solar panels in different areas, say Phoenix, New York, and Minneapolis.

    The heat and energy transport in the BIPVT will be simulated through a finite element model, which will be used in the life cycle analysis of BIPVT system. Based on the life-cycle assessment (LCA) standards and guidelines, the proposed BIPVT technology can be evaluated for environmental, economic, and societal impacts. The present system boundary will be defined to start at the existing materials acquired from the market. The unit cost and mass and energy flow are directly obtained from the current market, our experimental tests and simulation, and the data from the literature. The external heat supply or electricity generation facility for heat utilization is also considered beyond the system boundary.
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    Performance