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A Dynamic Model of a Gas Engine-Driven Heat Pump in Cooling Mode for Real-Time Simulation  

Shin, Young-Gy (Department of Mechanical Engineering, Sejong University)
Yang, Hoon-Cheul (Building Energy Research Center, Korea Institute of Energy Research)
Tae, Choon-Seob (Building Energy Research Center, Korea Institute of Energy Research)
Jang, Cheol-Yong (Building Energy Research Center, Korea Institute of Energy Research)
Cho, Soo (Building Energy Research Center, Korea Institute of Energy Research)
Publication Information
International Journal of Air-Conditioning and Refrigeration / v.14, no.3, 2006 , pp. 85-93 More about this Journal
Abstract
The present study has been conducted to simulate dynamics of a gas engine-driven heat pump (GHP) for the design of control algorithm. The dynamic model of a GHP was based on conservation laws of mass and energy. For the control of refrigerant pressures, actuators such as an engine throttle valve, outdoor fans, coolant three-way valves and liquid injection valves were controlled by P or PI algorithm. The simulation results were found to be realistic enough to be applied for the control algorithm design. The model could be applied to build a virtual real-time GHP system so that it interfaces with a real controller for the purpose of developing control algorithm.
Keywords
GHP(gas engine-driven heat pump); Automatic control; Heat pump; Real-time simulator; PID control; Compressor; Unloading;
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