197 - ENERGY SAVING AND CO_2 EMISSIONS REDUCTION USING SOLAR ASSISTED HEAT PUMPS FOR RESIDENTIAL HEATING

摘要

A thermodynamic model of a direct expansion solar assisted heat pump (DX-SAHP) was developed in order to simulate its behaviour in space heating applications. In this study, four different configurations of DX-SAHP were simulated using meteorological data from Madrid. The predicted results for this region indicate that long-term performance of the system ranges from 2.08 and 2.41 and that any of the studied configurations may be considered as an available solution to saving energy and CO_2 emissions. Simulation results also indicate that in working with underfloor heating and R134a as refrigerant, DX-SAHP systems are more efficient. On the other hand, the proposed model permits us to know the number of panels needed to install in a specific space heating application.