듀얼 냉동사이클을 이용하는 특수목적 자동차용 에어컨 시스템의 냉방성능에 관한 연구

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서재형;방유마;이무연
Seo, Jae-Hyeong;Bang, You-Ma;Lee, Moo-Yeon

  • Received : 2015.06.04
  • Accepted : 2016.02.07
  • Published : 2016.04.01

Abstract

본 연구의 목적은 열대 지방에서 사용되는 특수목적 자동차용 에어컨 시스템의 냉방성능 특성을 고찰하는 것이다. 이를 위하여 R-134a를 사용하는 듀얼 냉동사이클을 구성하였고 냉매량 및 실내온도를 변화시켜가면서 냉방성능을 비교하였다. 외기온도 $40.0^{\circ}C$에서 듀얼 냉동사이클의 실내 냉각속도 및 압축비(토출압력) 등을 고려하여 최적 냉매량을 1.5kg으로 선정하였다. 실내온도가 증가할수록 냉방부하가 증가하여 $25.0^{\circ}C$에서 $32.5^{\circ}C$로 실내온도를 높일 경우 $15.0^{\circ}C$에 도달하는데 걸리는 시간은 86.5% 증가하였고, $32.5^{\circ}C$에서 $40.0^{\circ}C$로 증가할 경우 38.1% 증가하였다. 또한, 실내온도가 $25.0^{\circ}C$에서 $40.0^{\circ}C$로 증가할수록 냉방용량은 19.1 kW에서 20.5 kW로 7.3% 증가했으나 냉방성능(COP)는 4.67에서 5.1로 7.0%감소하였다.

Keywords

냉방용량;냉방 성능;냉매;증기 압축 사이클

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Cited by

  1. 1. Design and Cooling Performances of an Air Conditioning System with Two Parallel Refrigeration Cycles for a Special Purpose Vehicle vol.7, pp.2, 2017, doi:10.3795/KSME-B.2016.40.4.213

Acknowledgement

Supported by : 동아대학교