Math modeling and transient characteristics research of vapor compression cooling system

Abstract

© 2019 American Institute of Physics Inc.. All rights reserved. The article describes the problem of maintaining the energy efficiency of modern heat transformers in off-design operating conditions. A structural scheme of the vapor compression cooling system and static mathematical model based on the equations of heat balance and heat transfer and modified in terms of additional accounting for the effect of outside air mass flow on heat transfer in a heat exchanger-condenser are presented. A control method is proposed which combines a simultaneous change in the compressor capacity and the mass flow rate of the working medium by controlling the expansion valve while maintaining the pressure ratio.