In this paper, three kinds of PV glazing system applied to office building of Shanghai which located in hot summer and cold winter zone of China were studied. Building simulation software Energy Plus was used to simulate thermal load, lighting electricity consumption, and PV electricity generation. According to the simulation results of annual electricity consumption, taking SC as the comparison basis, the saving rate of single PV glazing system (SPV) was 3.6%, double PV glazing system (DPV) was 4.8%, and natural-ventilated PV glazing system (NVPV) was 6.7%.

To a closed type parabolic trough solar collector, thermal performance was analyzed, a mathematical model was set up, and test-bed of collector to heat efficiency test was built. According to the experiment test data, the accuracy of the thermal mathematics model was validated. The results show that the model simulation accuracy is so higher that the model is reasonable and available.

In this paper, the mathematical model of Concrete Thermal Storage Element was introduced, then simulation software FLUENT was used to simulate Concrete Thermal Storage Elements of different cross sections, square, triangle, hexagon and test model. According to the simulation results, the hexagon section regenerator gets the best performance of heat storage, followed by the test model, square section regenerator is the third one, and last is triangle section regenerator.