Influence of System Operation Method on CO{sub}2 Emissions of PV/Solar Heat/Cogeneration System

摘要

A PV/solar heat/cogeneration system is assumed to be installed in a hotel. The system is operated with various operation methods: CO{sub}2 minimum operation, fees minimum operation, seasonal operation, daytime operation, and heat demand following operation. Of these five operations, the former two are virtual operations that are operated with the dynamic programming method, and the latter three are actual operations. Computer simulation is implemented using hourly data of solar radiation intensity, atmospheric temperature, electric, cooling, heating, and hot water supply demands for one year, and the life-cycle CO{sub}2 emission and the total cost are calculated for every operation. The calculation results show that the two virtual and the three actual operations reduce the life-cycle CO{sub}2 emission by 21% and 13% compared with the conventional system, respectively. In regard to both the CO{sub}2 emission and the cost, there is no significant difference between the two virtual operation methods or among the three actual operation methods.