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A Semi-Empirical Method for Representing Domestic Refrigerator/Freezer Compressor Calorimeter Test Data 家用冰箱/冷柜压缩机量热计测试数据的半经验表示方法
从三家制造商的压缩机上收集了家用冰箱/冷冻柜全密封压缩机的质量流量和功率量热计测试数据。热量计测试数据由10个不同的组织采集。这些测试数据通常与10个系数多项式(使用ARI标准540-91中提出的方法)相关,作为饱和蒸发器和冷凝器温度的函数。一般来说,这些多项式表示法准确地表示了实验数据,但不一定为压缩机热量计测试中未表示的条件提供可靠的插值或外推。 研究了代表压缩机性能的半经验模型。该模型基于容积效率的概念,并假设一个多方压缩过程。该模型有五个参数,必须通过拟合实验数据来确定。研究发现,对制冷剂流量和压缩机功率的四次或更多测量足以确定模型参数,从而可以使用模型生成准确的压缩机图。该模型被发现在冷凝和蒸发温度超出测量数据10°C(18°F)的情况下,外推误差在5%以内。 研究了一小部分吸入温度(32.2°C(90°F)以外)的可用数据。结果表明,该模型能够准确地模拟吸入温度变化的影响。单位:双引文:ASHRAE交易,第106卷,第。2.
Mass flow rate and power calorimeter test data for domestic refrigerator/freezer fully hermetic compressors have been collected on compressors from three manufacturers. The calorimeter test data were taken by 10 different organizations. These test data are commonly correlated with 10-coefficient polynomials (using the method presented in ARI Standard 540-91) as a function of the saturated evaporator and condenser temperatures. In general, these polynomial representations accurately represent the experimental data but do not necessarily provide reliable interpolations or extrapolations for conditions not represented in the compressor calorimeter tests. A semi-empirical model to represent compressor performance has been investigated. The model is based on the concept of volumetric efficiency and assumes a polytropic compression process. The model has five parameters that must be determined by fitting experimental data. Four or more measurements of refrigerant flow rate and compressor power were found to be sufficient to determine the model parameters, thereby allowing the generation of accurate compressor maps with the model. The model has been found to extrapolate within 5% error with condensing and evaporating temperatures that extend beyond the measured data by 10°C (18°F). A small set of available data for suction temperatures other than 32.2°C (90°F) were investigated. The results indicate that the model can accurately model the effect of changes in the suction temperature.Units: Dual
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