TY - CPAPER AU - Ion Dosa TI - COMPARATIVE EXERGY ANALYSIS OF A SINGLE STAGE HEAT PUMP AND A HEAT PUMP CASCADE OPERATING AT DIFFERENT TEMPERATURE LIFTS T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 15th International Multidisciplinary Scientific GeoConference SGEM2015, ENERGY AND CLEAN TECHNOLOGIES PY - 2015 DO - 10.5593/sgem2015/b41/s17.016 PB - Stef92 Technology ER -