Refrigeration TechnologyRefrigeration Technology0023-124X2782-4241Eco-Vector10683610.17816/RF106836Research ArticleConditions for the effective use of carbon dioxide as a working substance of heat pumpsKalninI. M.<p>Dr. of Technical Sciences, Professor</p>info@eco-vector.comVasyutinV. A.<p>Candidate of Technical Sciences</p>info@eco-vector.comPustovalovS. B.info@eco-vector.comMoscow State University of Environmental Engineering150720039278122704202227042022Copyright © 2003, Kalnin I.M., Vasyutin V.A., Pustovalov S.B.2003<p>The conditions of effective use of carbon dioxide! (R744) for heat pumps (HP) are considered on the basis of the analysis of its thermophysical and thermodynamic properties, and the competitiveness of HP on R744 with HP on freons. It is shown that the advantages of R744 are most pronounced in HP of large heat output. The works being carried out for the study of the processes, development of calculation techniques and designing of HP on R744 are reported.</p>carbon dioxideworking substanceheat pumpsR744диоксид углеродарабочее веществотепловые насосыR744