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Stability, efficiency and control system of a masterflux compressor in a refrigeration unit of a high end computer.

机译:高端计算机制冷单元中的Masterflux压缩机的稳定性,效率和控制系统。

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摘要

The combination of increased power-dissipation and increased-packaging density has led to substantial increases in chip/module heat flux. The challenge is to limit chip-temperature-rise. Researches identified the advantages of operating of low-temperature-electronics. The current-research focuses on IBM's S/390 mainframe, which uses refrigeration system to maintain low-chip-temperatures.;Multivariable-control of compressor with Thermostatic-expansion-valve-opening (TXV) can give better stability operating around an evaporator set-point-temperature (interface-temperature within a tolerance-range). Compressor is the only mechanical working component; the compressor-role is significant and should be carefully studied. The research was focused on the characteristic of the TXV with the Masterflux compressor, the effect of variation of superheat on the flow through the TXV at varying evaporator temperatures and effect of sudden changes in evaporator heat load.;An experimental-setup was built. A set-of-experiments are conducted to investigate the changes in the stability with the same TXV at the same bulb location for full-load through no-load conditions.
机译:功耗增加和封装密度增加的结合导致芯片/模块热通量的大幅增加。挑战在于限制芯片温度上升。研究确定了低温电子设备的操作优势。当前的研究集中在IBM的S / 390大型机上,该主机使用制冷系统来维持较低的切屑温度。带有恒温膨胀阀开度(TXV)的压缩机的多变量控制可以在蒸发器组周围提供更好的稳定性点温度(接口温度在公差范围内)。压缩机是唯一的机械工作部件。压缩机的作用很重要,应仔细研究。研究的重点是Masterflux压缩机的TXV的特性,在变化的蒸发器温度下过热度变化对流经TXV的流量的影响以及蒸发器热负荷突然变化的影响。;建立了实验装置。进行了一组实验,以研究在空载条件下满载情况下,相同灯泡位置和相同TXV时稳定性的变化。

著录项

  • 作者

    Makwana, Yasin.;

  • 作者单位

    The University of Texas at Arlington.;

  • 授予单位 The University of Texas at Arlington.;
  • 学科 Engineering Mechanical.
  • 学位 M.S.
  • 年度 2003
  • 页码 79 p.
  • 总页数 79
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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