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2026 Vol.20, Issue 3 Preview Page

Research Article

Exploratory Cost-Optimality Assessment of Building Envelope Thermal Performance Standards in South Korea: EnergyPlus Parametric Simulation and Life-Cycle Cost Analysis

에너지절약설계기준 외피 열관류율의 비용최적 적정성 탐색적 평가: EnergyPlus 파라메트릭 시뮬레이션 및 생애주기비용 분석

Jeong-Min Mun1
,
Hyun-Ho Yang2
,
Jeong-Uk Kim3*
문 정민1
,
양 현호2
,
김 정욱3*
1PhD Candidate, Department of Energygrid, Sangmyung University, Seoul, Korea
2M.S. Student, Department of Energygrid, Sangmyung University, Seoul, Korea
3Professor, Department of Electrical Engineering, Sangmyung University, Seoul, Korea
1상명대학교 에너지그리드학과 박사과정
2상명대학교 에너지그리드학과 석사과정
3상명대학교 전기공학과 교수
*Corresponding Author
30 June 2026. pp. 191-205
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Abstract

This study evaluates cost-optimality of building envelope U-value standards in South Korea (Notification No. 2025-738) using EnergyPlus 24.1.0 and a simplified EU 244/2012 life-cycle cost framework. A total of 1,512 parametric cases covering three building types and four climate zones were analyzed under nine economic-carbon scenario combinations. Wall standards are near cost-optimal for residential buildings, but non-residential standards are consistently lax, with the gap widening toward southern zones. Window standards are less stringent than cost-optimal across all sectors, robust against replacement cost uncertainty. Morris sensitivity analysis ranked airtightness (ACH) as the most influential variable, highlighting the absence of quantitative airtightness provisions in current regulations. These findings are exploratory, based on ASHRAE 90.1-2019 prototype buildings adapted to Korean conditions.

Keywords
Building energy code
EnergyPlus
Cost-optimal
Life-cycle cost
Envelope thermal transmittance
Morris sensitivity
키워드
에너지절약설계기준
EnergyPlus
비용최적화
생애주기비용
외피 열관류율
Morris 민감도 분석
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Information
  • Publisher :Korean Institute of Architectural Sustainable Environment and Building Systems
  • Publisher(Ko) :한국건축친환경설비학회
  • Journal Title :Journal of Korean Institute of Architectural Sustainable Environment and Building Systems
  • Journal Title(Ko) :한국건축친환경설비학회논문집
  • Volume : 20
  • No :3
  • Pages :191-205
  • Received Date : 2026-04-22
  • Revised Date : 2026-06-09
  • Accepted Date : 2026-06-10
  • DOI :https://doi.org/10.22696/jkiaebs.20260017
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