Integrated thermal management simulation: evaluating the effect of underhood recirculation flows on AC-system performance

WANG, Z., ET AL.

SEPTEMBER 20, 2018

Proceedings of the 7th Modelica Conference
Como, Italy

Introduction

Vehicle can be seen as a system composed of multiple sub-systems. One such subsystem is the AC system which is used to maintain passenger comfort. A key component of the AC-system is the condenser. The condenser is used to condensate the refrigerant by extracting the heat from the refrigerant to the air-flow. For the operation of the AC-system is very important that the refrigerant condensation is completed at the outlet from the condenser. It is possible that this does not occur in cases of adverse air flow conditions in the proximity of the condenser. For example, airflow recirculation can cause local temperature peaks and consequent reduction of the condensation rate.