Transient Simulation of Vapor Compression Systems

Speaker(s): 
Date: 
June 4, 2009 - 11:00am
Location: 
90-4133

Transient simulations of refrigeration cycles are crucial for development and optimization of household refrigerators. While developing such modeling capabilities both model fidelity and execution time need to be considered. In this presentation, a component based transient simulation tool is described where the vapor compression system is coupled with a typical refrigerator cabinet in order to investigate the pull down and cycling characteristics. This model incorporates a moving boundary heat exchanger model based on refrigerant charge inventory instead of heat transfer calculations. A parametric study is presented on the effect of void fraction models on the performance prediction of small refrigeration systems. System pressures and charge distribution were compared for 7 void fraction models. For more information about this seminar, please contact: JoAnne Lambert 510.486.4835, or send e-mail to JMLambert[at]lbl.gov

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