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Experimental and theoretical investigation of a sliding vane compressor-expander unit for an R-134a automotive vapour compression refrigeration system.

机译：R-134a汽车蒸汽压缩制冷系统的滑片式压缩机-膨胀机单元的实验和理论研究。

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摘要

The incorporation of the compressor and expander into one mechanism is a compact and useful method for recovering some energy from the expansion/throttling stage of the refrigeration cycle. This thesis aims to experimentally and theoretically investigate the performance of the overall refrigeration system with emphasis on the compressor-expander unit. Experimental work is carried out over several working conditions. An investigation in the related effects on the cycle COP, volumetric efficiency, compressor power loss and other system operating conditions is conducted as well. The experimental setup includes the compressor-expander, a condenser, a variable orifice expansion valve, an evaporator and an accumulator.;A compressor-expander theoretical model involving detailed modelling of the compressor-expander geometry and solving basic mass and energy conservation equations with justified assumptions is developed. Analytical models for the condenser, expansion device and evaporator work in tandem with the compressor-expander model to predict the fluid conditions in all parts and sections of the cycle.
机译：将压缩机和膨胀机结合到一个机构中是一种紧凑且有用的方法，用于从制冷循环的膨胀/节流阶段回收一些能量。本文旨在通过实验和理论研究整个制冷系统的性能，重点是压缩机-膨胀机单元。实验工作是在几种工作条件下进行的。还对循环COP，容积效率，压缩机功率损耗和其他系统运行条件的相关影响进行了研究。实验装置包括压缩机-膨胀机，冷凝器，可变节流孔膨胀阀，蒸发器和蓄能器。压缩机-膨胀机理论模型，包括对压缩机-膨胀机几何形状的详细建模，并通过合理的方法求解基本的质量和能量守恒方程假设已经建立。冷凝器，膨胀装置和蒸发器的分析模型与压缩机-膨胀器模型协同工作，以预测循环所有部分和部分的流体状况。

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  • 作者

    Azih, Chukwudi.;

  • 作者单位

    Carleton University (Canada).;

  • 授予单位 Carleton University (Canada).;
  • 学科 Engineering Mechanical.
  • 学位 M.A.Sc.
  • 年度 2007
  • 页码 196 p.
  • 总页数 196
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 机械、仪表工业;
  • 关键词

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