Abstract
This paper analyzes CGS effectiveness for the CO_2 reduction, and the effects of use of heat pump for heating were investigated at various power plant efficiencies and the COP of heat pump. In the next-generation, it is essential to apply the system with heat pump for heating instead of boiler. The calculation results show that CGS benefit for CO_2 emission is strongly affected by the COP of heat pump and the electric efficiency of CGS is needed to be close to that of power plant efficiency to have a beneficial effect in the prospective system with heat pump. The electrical efficiency of CGS must be higher than the present system with boiler to get the benefits.
