| Title |
TRNSYS Simulation Methodology of a VRF Heat Pump for Detailed Energy Analyses |
| Authors |
Sang Woo Ha ; Yong Sung Jang ; Eui-Jong Kim |
| DOI |
https://doi.org/10.6110/KJACR.2022.34.2.075 |
| Keywords |
시스템 에어컨; 가변 냉매 유량 방식; 트랜시스; 과도상태 모델 System air-conditioner; Variable Refrigerant Flow; TRNSYS; Transient model |
| Abstract |
Variable refrigerant flow (VRF) based system air-conditioner can control a number of indoor zones by a single outdoor unit. As the simulation model for this VRF system is not trivial to develop, a simple TRNSYS air-conditioner model is proposed as a methodology for describing the VRF system using the performance data provided by the manufacturer. In this work, a new simulation process algorithm is introduced to describe the detailed VRF control by a simple on/off control. Results show that the proposed model applied for a unit house of a typical flat can control indoor temperatures and humidity levels of a number of rooms under a predefined occupancy scenario. The simulation time step is a key parameter to obtain well-controlled simulation results and corresponding energy consumption. |