| 摘要 |
FIELD: coolants. SUBSTANCE: coolant is a mixture consisting of cooling agents R134a, R152a and synthetic compressor oil at the following ratio of components, wt.-%: R152a 10-85; compressor oil 4.9-10, and R134a - the rest. Cooling agent is prepared by the successive mixing R152a and R134a followed by mixing this binar system with compressor oil. Invention ensures to increase specific cold-output of refrigerating machine by 5-14%, decrease index of hotbed effect to 0.1-0.3 relative units and increase compressor oil concentration to 10%. EFFECT: enhanced quality and effectiveness of cooling agent. 1 cl, 3 dwg |
