▎ 摘　　要

NOVELTY - Refrigeration oil comprises 0.0011-0.0329 wt.% nanoparticles, where the nanoparticle includes graphene or graphene oxide material. USE - The refrigeration oil is useful for improving the energy efficacy of refrigerating device (claimed). ADVANTAGE - The refrigeration oil improves the compatibility of the refrigerant and oil, enhances the thermal conductivity of refrigerant and the heat exchange effect of evaporator and condenser and improves the performance of refrigeration system. DETAILED DESCRIPTION - Preparing refrigeration oil comprises (i) adding dispersant Span 85 (RTM: Sorbitan monooleate-85) into the reagent bottle; (ii) adding nanoparticle graphene into the reagent bottle of step (i), where the mass ratio of graphene and dispersant is 1:(0.1-10); (iii) adding refrigerated machine oil into the reagent bottle of step (ii), and mixing, where the mass of graphene in refrigerating machine oil is 0.0011-0.0329 wt.%; and (iv) filling reagent bottle of step (iii) with graphite, placing the reagent bottle of olefin refrigerating machine oil in an ultrasonic oscillator and subjecting to ultrasonic vibration under a constant temperature water bath at 25-80 degrees C.