Mathematical model of absorption bromide refrigeration unit of two–stage steam generation

Abstract
Energy and technical economical efficiencies of a lithium bromide absorption refrigerator with two stage generation of working substance vapor (BARD), operating on three circuits are  influenced by parameters of external sources of heat and temperature drops in apparatus. To estimate efficiency there was developed a simulator which consists of subprograms to calculate thermodynamic cycles, thermodynamic and thermophysical properties of water, water vapor and aqueous solution of lithium bromide;   subprograms to calculate heat exchange apparatus and basic technical economic indices. The mathematical model developed helps to define the most effective type of machine for prescribed parameters of external heat sources.