http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
2중 증발 시스템의 원리와 냉방 및 연비 성능 개선 효과에 대한 연구
이해준(Haejun Lee),안용남(Yongnam Ahn),정춘식(ChunShik Jung),왕윤호(Yoonho Wang),김재연(Jaeyeon Kim) 한국자동차공학회 2013 한국자동차공학회 부문종합 학술대회 Vol.2013 No.5
In many countries, Regulations regarding CO2 emission reduction are recently being released. It is becoming more and more important to improve the fuel efficiency of vehicles in the automotive industry. Due to these circumstances, advanced technologies improving the efficiency of the air conditioning system which affects actual fuel efficiency of vehicles have been developing for many years. In this paper, two-zone separated evaporation system which can maximize evaporator & expansion valve`s efficiency is studied. Two-zone separated evaporation system consists of two key technology, dual evaporator and dual expansion valve. Unlike the typical evaporator, the dual evaporator has parallel flow in two rows independently. In 1st row, it is necessary to supply more refrigerant flow rate to 1st row, as higher portion of the cooling is done. In 2nd row, to further cool the air, the refrigerant which is less pressure & temperature than that of the 1st row has to be supplied to the 2nd row. Dual expansion valve expands into the two phase regions and distributes refrigerant to each row of the dual evaporator. This paper presents experimental results of cooling performance in test mode to simulate vehicle cabin cooling evaluation. The conventional system & two zone separated evaporation system were compared in bench and vehicle test mode. As a result, two-zone evaporation system has 10% higher A/C efficiency than conventional system. It is identified that applying two-zone evaporation system to vehicles can improve fuel efficiency.
수냉식 응축기를 활용한 자동차용 에어컨 시스템 효율 향상에 관한 실험적 연구
최준영(Junyoung Choi),원승식(Seungsik Won),안용남(Yongnam Ahn),신현근(Hyunkeun Shin),왕윤호(Yoonho Wang),김재연(Jaeyeon Kim) 한국자동차공학회 2014 한국자동차공학회 부문종합 학술대회 Vol.2014 No.5
Recently regulations regarding C0₂ emission and fuel economy of automobile are being increased. Accordingly power consumption reduction of Mobile Air-Conditioning system(MAC) has been continuously requested. There have been numerous attempts to use a water-cooled condenser instead of conventional air-cooled condenser in an airconditioning system. This paper describes an experimental results of using water-cooled condenser in air-conditioning system. Using additional water-cooled condenser was the most effective way among numerous water-cooled condenser systems. The water-cooled condenser cools refrigerant from superheated state to a two-phase state and the air-cooled condenser cools from two-phase state to sub cool state. This was named combined cooling condenser system which had both a water cooled condenser and an air cooled condenser. Bench and vehicle test were conducted to verify the effects to reduce power consumption due to decreased discharge pressure of air-conditioning system. By using combined cooling condenser system, A/C efficiency improved about 9.4% over the conventional A/C system.
탑승자 쾌적성 향상을 위한 국부 근접 A/C 시스템 개발
이동규(Dongkyu Lee),권대복(Daebok Keon),우상구(Sanggu Woo),이성제(Sungje Lee),안용남(Yongnam Ahn),박재우(Jaewoo Park) 한국자동차공학회 2017 한국자동차공학회 부문종합 학술대회 Vol.2017 No.5
A single module A/C system is developed through application of compact and light-weight components. This module is designed to get more than 300 W cooling performance by using a small electric compressor. Furthermore, this cooled air is discharged to each passenger’s seat to improve passengers’ thermal comfort. Above all, it can be completely independent and individually controlled to meet the air conditioning requirements for individuals effectively.