Zhenping Dong

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Photovoltaic solar heat pump (PV-SHP) system, an integration of the photovoltaic/thermal and solar assistant heat pump technology, can be one promising and sustainable replacement of the conventional water heaters in future. This paper introduces a dynamic simulation model of our proposed PV-SHP system. Numerical results of the system performance are(More)
With the steel fiber reinforced concrete (SFRC) used more and more widely in some large-span structures, large tunnel linings, dam structures, military engineering, and some other major projects, its durability arouses more and more concerns. In this paper carbonation test of SFRC was conducted. The rule for the mixing amount of steel fiber (0, 0.5, 1.0,(More)
Concrete carbonation is one of the most significant causes of deterioration of reinforced concrete structures in atmospheric environment. However, current models based on the laboratory tests cannot predict carbonation depth accurately. In this paper, the BP neural network is optimized by the particle swarm optimization (PSO) algorithm to establish the(More)
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