Dubro I. Multi-criterion Modeling and Evaluation of Alternatives in Refrigerating Equipment Conversion to Modern Refrigerants.

Dissertation is devoted to a multi-criterion approach to create models for assessment of alternative refrigerants used in refrigerating systems. The assessment models of ecological risk and danger of refrigerants based on an additive factor model and priori-and-posteriori models were developed. The multi-criterion analysis tool "EcoRef" is the application software, designed to determine ecological properties of refrigerants and it is an integrated database for over 150 pure refrigerants and mixtures. A quantitative analysis of calculated ecological characteristics of refrigerating systems has shown that the environmental consequences to a greater extent depend on a reasonable thermodynamic choice of energy-effective cooling agent rather than a direct ecological danger of refrigerants. The results of dissertation contain recommendations for choice of preferable refrigerants for different types of refrigerating systems.