制冷剂
气体压缩机
瞬态(计算机编程)
空调
环境科学
工程类
机械
核工程
控制理论(社会学)
机械工程
计算机科学
物理
控制(管理)
操作系统
人工智能
作者
Todd Rossi,James Braun
出处
期刊:20th International Congress of Refrigeration: Refrigeration into the Third Millennium.
日期:1999-09-19
被引量:9
摘要
A transient model for air-cooled, direct expansion cooling equipment was developed that runs faster than real time and handles the thermal and refrigerant flow transients associated with on/off compressor control. The model involves the solution of a set of first-order differential equations that arise from mass and energy conservation. The state variables include refrigerant pressures and enthalpies and temperatures of solid material. A novel method for handling the start up and shut down transients was developed. The model was validated using measurements for a 3-ton (10.6 kW) rooftop air conditioner.
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