司派友;刘双白;刘青山;支长双;王维萌;刘迎文;何雅玲;

• 1:国网冀北电力有限公司电力科学研究院
• 2:西安交通大学能源与动力工程学院

摘要(Abstract)：

为了探索液化过程参数设计方法,利用Aspen Plus软件开展低温液空储能系统液化过程热力学特性的仿真研究,建立液化过程的模拟流程,并采用■分析方法研究了液化压力、节流入口温度、膨胀机入口温度对液化过程的影响规律,结合p-h图分析参数变化对膨胀过程工作特性的影响,获得液化过程各部件■损失随工作参数的变化情况。研究发现:液化压力的变化对节流阀及膨胀机■损失的影响较小,但较低的液化压力将导致液化过程冷箱热负荷降低,使得冷箱■损失降低;同时,较低的液化压力可有效减少膨胀机出口带液量,进一步提升液化过程的安全可靠性。当节流入口温度和膨胀机入口温度降低时,液化过程流量及出口总气相分量变小、冷箱换热量降低,使得节流阀和冷箱的■损失不断降低。液化过程的总■损失随着液化压力、节流入口温度、膨胀机入口温度的不断降低,其最大降幅分别为13.17%,51.02%和19.95%。结果表明:液化流程的参数优化设计可以有效降低系统能量损失、提升系统性能,有利于空分、天然气液化等低温系统及其设备的高效安全运行。

关键词(KeyWords)： 液化空气储能;热力学分析;液化过程;■分析

Abstract:

Keywords:

基金项目(Foundation): 国家电网公司总部科技项目(52018K170028)

作者(Author): 司派友;刘双白;刘青山;支长双;王维萌;刘迎文;何雅玲;

Email:

DOI: 10.13800/j.cnki.xakjdxxb.2020.0422

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