Development of a VRF with Individual Capacity from Combination Ratio Model (VICOR Model) for TRNSYS Application

Dae-Uk Shin; Min-Hyeong Kim; Kwang-Woo Kim

doi:10.22696/jkiaebs.20260003

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2026 Vol.20, Issue 1 Preview Page Next Page

Research Article

Development of a VRF with Individual Capacity from Combination Ratio Model (VICOR Model) for TRNSYS Application TRNSYS 적용을 위한 조합비 기반 개별 용량 도출 VRF 모델(VICOR Model) 개발

28 February 2026. pp. 29-37

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Abstract

This study developed VICOR model, a TRNSYS component for Variable Refrigerant Flow (VRF) systems. It directly inputs up to 100 indoor units, automatically calculates real-time combination ratio based on operating units, and performs 5-dimensional interpolation using manufacturer catalog data (indoor/outdoor dry-bulb temperatures, indoor wet-bulb temperature, airflow, and combination ratio). Diverse indoor conditions are integrated via load-weighted averaging, and total cooling capacity is proportionally distributed to each room’s instantaneous load. Validation with a 5-zone cooling simulation showed set-temperature (26°C) satisfaction of 98.0–99.3%, RMSE 0.21–0.49°C, and CVRMSE 2.0–2.3%.

Keywords

가변 냉매 유량

TRNSYS

모델링

VICOR 모델

키워드

VRF (Variable Refrigerant Flow)

TRNSYS

Modeling

VICOR model

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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 :1
Pages :29-37
Received Date : 2025-12-10
Revised Date : 2026-01-07
Accepted Date : 2026-01-07
DOI :https://doi.org/10.22696/jkiaebs.20260003

Journal of Korean Institute of Architectural Sustainable Environment and Building Systems ISSN:1976-6483(Print) 2586-0666(Online) 한국건축친환경설비학회논문집

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