In this research, the heat and flow analysis in a condenser of vehicle HVAC system was investigated numerically regarding the different shapes of the condenser tube. The velocity, pressure, and temperature distribution of the test fluid(R-134A) inside the tube were numerically calculated for the optimum design of the condenser tube for two different length with four different inlet velocities. In addition, the local pressure and temperature distributions for total tube length were calculated and the variation of pressure drop of the R-134A with flow rate were also calculated numerically. The tube at case 1 with less curved elbows was determined for the better design than case 2 in the aspect of energy-effective shape of the condenser tube.

Abstract
 1. 서론
 2. 유동해석 방법
  2.1 설계 및 해석조건
  2.2 격자생성
 3. 결과 및 고찰
 4. 결론
 참고문헌

• 이동렬(대구가톨릭대학교 기계자동차공학부) | Dong-Ryul Lee