Computer simulation and optimization of building models for photovoltaicphotothermal integration

Photovoltaic solar thermal integration is a new idea for buildings to fully utilize clean energy for energy saving and emission reduction. The digital modeling of photovoltaic solar thermal integration in buildings is finished by creating the energy balance equation of the energy supply system and the physical model of the main equipment. The objective function is established and the constraints are set to achieve optimization of the operation model through planning and solving problems. The TRNSYS simulation platform carries the integrated operation model and optimization scheme, and the optimization effect is simulated and validated. The results of computer simulation effect analysis show that the RMS of the parameters is 2.74%, 11.71%, 8.55%, and 2.47%, respectively, and the simulated and experimental values are consistent. The average system thermal efficiency and average water tank thermal efficiency of the optimized scheme are better than those of the PV/T-FPC system, and the cumulative cost savings in the whole life cycle after replacing the proposed scheme in Beijing and other five cities are 8432 yuan, 5937 yuan, 3513 yuan, 31744 yuan, 34893 yuan, and 31877 yuan, respectively, and the optimization effect is significant.