고효율 전동화 차량 HVAC 시스템 구현을 위한 스크롤압축기 1차원 성능예측

Abstract

As the demand for electric vehicles (EVs) continues to grow, the development of EV technology has been actively progressing worldwide. One of the most critical performance indicators in EV development is to maximize the driving range. However, the driving range of EVs, equipped with conventional heating, ventilating, and air conditioning (HVAC) systems, is significantly reduced, as these systems consume substantial electrical power. Therefore, there is a strong need to develop high-efficiency HVAC systems for EVs. In this study, one-dimensional performance predictions of scroll compressor have been conducted to support the implementation of a high-efficiency HVAC system for electric vehicles. The one-dimensional performance analysis has been carried out using an in-house code, based on various scroll geometrical parameters such as basic circle radius, initial involute angle, scroll height, gap clearances, and total number of chambers. Physical quantities related to scroll performance, such as density, pressure, temperature, mass flow rate, power consumption, isentropic efficiency, fluid forces, and compression ratio, have been evaluated with respect to the scroll geometrical parameters. The results reveal a trade-off relationship between the physical quantities and the scroll geometrical parameters. These numerical findings can be used to the design of optimal scroll compressor geometry and guide the development of three-dimensional scroll designs.