抄録
In this study, a mathematical optimization model is constructed to analyze the energy saving characteristics of gas engine home cogeneration system (say, GE-CGS). Energy saving characteristic is analyzed by comparing GE-CGS with the corresponding conventional system composed of a gas boiler and electricity purchased from outside grid. The system's operation is determined by the optimization model, by which the annual primary energy consumption is minimized for the energy demands measured actually through one year. Energy saving characteristics is analyzed for 5 houses. As the result, no apparent energy saving improvement was observed.