Comparison Study of Air-conditioning Systems using LCC Analysis

LCC를 이용한 공조 방식별 비교 연구

  • Kim, Joung-Kuk (Graduate School of Housing, Seoul National University of Science and Technology) ;
  • Chung, Kwang-Seop (School of Architecture, Seoul National University of Science and Technology) ;
  • Kim, Young-Il (School of Architecture, Seoul National University of Science and Technology)
  • 김종국 (서울과학기술대학교 주택대학원) ;
  • 정광섭 (서울과학기술대학교 건축학부) ;
  • 김영일 (서울과학기술대학교 건축학부)
  • Received : 2012.08.01
  • Accepted : 2012.08.27
  • Published : 2012.09.01

Abstract

The purpose of this study is to make an economic analysis(Life cycle cost) of selecting optimal air conditioning system for a research building which is 8 stories with a total floor area of $32,010m^2$. Energy consumptions of three proposed air-conditioning systems(Alt-1,2,3) that reflect the government green-growth policy are calculated and compared. The results show that life cycle cost of Alt-3(Ventilation DX AHU+EHP) is less than Alt-1(EHP+ventilation DX AHU) by 5.1%, and Alt-2(Absorption chiller/heater+EHP) by 34.3%. Annual energy consumption of Alt-3 is less than Alt-1 by 9.9%, and Alt-2 by 37.4%. Annual $CO_2$ emission of Alt-3 is less than Alt-1 by 9.9%, and Alt-2 by 0.2%.