Enhancing heat transfer in two-phase refrigerant flow in condenser of refrigeration unit

Abstract

The two-phase flow of the refrigerant in the condenser pipe of a vapor compression refrigerating plant is considered. The magnitude of the refrigeration coefficient depends directly on the efficiency of the condenser. To increase the heat transfer in the condenser pipe, it seems expedient to increase the length of the region of the annular regime of the coolant flow with a turbulent film, subjected to intense entrainment of liquid droplets into the gas core. Using Kutateldze-Sorokin and Baker flow regime maps, it is possible to reliably determine the state of a two-phase flow in a condenser tube, and to form certain regions of working fluid flow. The controller, temperature and pressure sensors system in the condenser pipe, and actuators can increase the cooling capacity of the installation in general from 8 to 11%, depending on the type of refrigerant.