Abstract
The application of solar energy provides an alternative way to replace the primary source of energy, especially for large-scale installations. Heat pump technology is also an effective means to reduce the consumption of fossil fuels. This paper presents a practical case study of combined hybrid PV/T solar assisted heat pump (SAHP) system for sports center hot water production. The initial design procedure was first presented. The entire system was then modeled with the TRNSYS 16 computation environment and the energy performance was evaluated based on year round simulation results. The results show that the system COP can reach 4.1 under the subtropical climate of Hong Kong, and as compared to the conventional heating system, a high fractional factor of energy saving at 67% can be obtained. The energy performances of the same system under different climatic conditions, that include three other cities in France, were analyzed and compared. Economic implications were also considered in this study.
Highlights
There are various applications of solar energy for mediumgrade heating, including water heating, space heating, distillation, and the like
This paper presents a practical case study of combined hybrid PV/T solar assisted heat pump (SAHP) system for sports center hot water production
The entire system was modeled with the TRNSYS 16 computation environment and the energy performance was evaluated based on year round simulation results
Summary
There are various applications of solar energy for mediumgrade heating, including water heating, space heating, distillation, and the like. Unlike the conventional solar thermal collectors, the hybrid photovoltaic/thermal (PV/T) collectors make possible higher energy outputs per unit surface area because the absorbed solar radiation is converted into electricity and usable heat simultaneously The studies on this topic were initiated in the 1970s and since many innovative systems have been introduced. Through system simulation Li and Yang [16] studied a parallel SAHP system for supplying hot water to a hypothetical residential building; the author concluded that the solar collector area affects the optimum flow rate significantly. An indirect hybrid PV/T solar-assisted heat pump system has been investigated from the initial design phase to the detailed analysis of the annual performance through numerical simulation. The cost investment on the proposed system was estimated
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