New Progress and Thinking on Building Integrated PVT Heat Pump Technology
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The solar PVT heat pump technology shows an increasing trend in the field of building energy conservation and renewable energy utilization nowadays, due to its highly efficient and stable time-sharing distributed poly-generation characteristics, as well as its unique advantages in the integration with buildings. This paper analyzed the basic demands of modern buildings with respect to hot water, electricity, cooling, heating and architectural appearance. Several existing problems in the development of solar energy utilization technology were pointed out, as well as three development directions of integration, which refers to the integration of photo-electric and photo-thermal properties, the integration of heating and cooling, the integration of solar modules and buildings. Taking into consideration the perspective of building epidermis, the forms of solar modules which are suitable for the basic architectural design requirements were studied, along with the application of such solar modules and its feasibility. In addition, the design method of the roll-bond-PVT unit and the PVT heat pump poly-generation system were also proposed in this paper. The experimental study was carried out simultaneously, and the main experiment results of the PVT heat pump system were given.
KeywordsPVT PVT heat pump BIPVT Poly-generation system Energy demand of buildings
The authors are grateful for the financial support provided by the National Key Research and Development Project of China (Grant No. 2017YFC0704200) and National Natural Science Foundation of China (Grant No. 51676026, 51578102).