THE ANNALS OF “DUNAREA DE JOS” UNIVERSITY OF GALATI Fascicle IV. REFRIGERATING TECHNIQUE, INTERNAL COMBUSTION ENGINES, BOILERS AND TURBINES ISSN 1221 – 4558 The main goal of this international journal is to provide a forum for exchanging recent research and scientific results in the general areas of thermodynamic systems, refrigeration, internal combustion engines, steam boilers and turbines technology. The journal is published in English, continuously, since 1978.