供冷机组的改进算法及仿真

2007 IFIP International Conference on Network and Parallel Computing Workshops (NPC 2007) Pub Date : 2007-09-18 DOI:10.1109/NPC.2007.156

He Zhi-bin, Zhang Jun-dong, Sun Yu-qing, Z. Hong, Gan Hui-bing

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引用次数: 0

摘要

提出了往复供冷装置的动态模型，并通过引入压缩机出口冷媒焓这一未知变量的方法，对模型的算法进行了修正。对制冷系统进行了动态仿真。实验验证了该模型的准确性，改进后的算法提高了速度和精度，该模型和算法可用于机组模拟器的开发和机组控制。蒸发器和冷凝器一般采用分布参数模型，压缩机的压缩过程采用多向过程，膨胀阀的膨胀过程采用等焓过程，换热器采用对数平均温差法计算。

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Improved Algorithm and Simulation of the Provision Refrigerating Unit

The dynamic model of reciprocating provision cooling plant is presented, and the algorithm of the model is amended, through the method of quoting an unknown variable, which is enthalpy of the refrigerant at the compressor outlet. Dynamic simulation of the refrigerating system is given. The experiment validates that the model is precise and the amended algorithm improve the speed and the precision, the model and the algorithm can be applied to develop the unit simulator and control the unit. The evaporator and the condenser are adopted the distributing parameter model in general, the compression process of compressor is described as polytropic process, the expansion process of expansion valve is considered isenthalpic, and the heat exchanger is calculated with method of logarithmic mean temperature difference.

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2007 IFIP International Conference on Network and Parallel Computing Workshops (NPC 2007)

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