变工况双级压缩中间压力及其对系统性能的影响

doi:10.3969/j.issn.0438-1157.2012.01.013

化工学报 ›› 2012, Vol. 63 ›› Issue (1): 96-102.DOI: 10.3969/j.issn.0438-1157.2012.01.013

变工况双级压缩中间压力及其对系统性能的影响

金旭1，王树刚1，张腾飞1，李照义2，祖丰1

1大连理工大学建设工程学部；2大连三洋明华电子有限公司开发部

收稿日期:2011-04-29 修回日期:2011-06-02 出版日期:2012-01-05 发布日期:2012-01-05
通讯作者: 张腾飞

Intermediate pressure and its effect on performance of two-stage compression system with variable operating mode

JIN Xu1,WANG Shugang1,ZHANG Tengfei1,LI Zhaoyi2,ZU Feng1

1Faculty of Infrastructure Engineering,Dalian University of Technology;2Department of Research and Development,Dalian Sanyo Meica Electronics Co.Ltd.

Received:2011-04-29 Revised:2011-06-02 Online:2012-01-05 Published:2012-01-05

摘要/Abstract

摘要： 基于质量与能量守恒方程，以转子压缩机几何模型为基础，建立反映中间压力形成过程的变容量双级压缩系统压缩机动态耦合模型，并利用实验对模型进行了校核。基于模拟和实验结果，分析了中间压力随时间的变化及其变工况特性。结果表明，中间压力具有脉动特性，但脉动幅值相对于时均值较小；在影响中间压力的因素中，低高压压缩机理论输气量比的影响最为显著，冷凝温度的影响明显小于蒸发温度的影响；系统制热量随中间压力的升高近似呈线性增加，而系统制热COP随中间压力升高具有先升高后降低的趋势，且存在最优值。

关键词: 中间压力, 双级压缩, 变容量, 动态耦合, R410A

Abstract: A dynamic coupled model of a two-stage compression system with variable capacity reflecting the generation of intermediate pressure is constructed based on the rotary compressor geometry,the mass and energy conservation equations.The model is verified by the experiment.According to the results of simulation and experiment,the variation of the intermediate pressure with time and characteristics of variable operating modes were analyzed.The results show that the intermediate pressure has pulse characteristics,but the pulse amplitude is relatively small by comparison to the time-averaged value.Among the factors affecting the intermediate pressure,the ratio of theoretical displacement of the low compressor to that of the high one is the most significant one and condensation temperature is less significant than evaporation temperature.The heating capacity increases linearly with the intermediate pressure,while the change of the system COP for heating increases with intermediate pressure first and then decreases,and there exists an optimal value.

Key words: intermediate pressure, two-stage compression, variable capacity, dynamic coupled, R410A

中图分类号:

TB61

金旭1，王树刚1，张腾飞1，李照义2，祖丰1. 变工况双级压缩中间压力及其对系统性能的影响[J]. 化工学报, 2012, 63(1): 96-102.

JIN Xu1,WANG Shugang1,ZHANG Tengfei1,LI Zhaoyi2,ZU Feng1. Intermediate pressure and its effect on performance of two-stage compression system with variable operating mode[J]. CIESC Journal, 2012, 63(1): 96-102.

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变工况双级压缩中间压力及其对系统性能的影响

Intermediate pressure and its effect on performance of two-stage compression system with variable operating mode

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