Calculation and Experiment Study on Optimum Charge for a Small CO<sub>2</sub> Refrigeration System

doi:10.7652/xjtuxb201303015

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Calculation and Experiment Study on Optimum Charge for a Small CO₂ Refrigeration System

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- Calculation and Experiment Study on Optimum Charge for a Small CO₂ Refrigeration System
- Vol. 47, Issue 3, Pages: 80-84(2013)
- 作者机构：
  
  安徽工业大学建筑工程学院,安徽,马鞍山,243002
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201303015
  CLC： TB657.9
- Online First：10 March 2013，
  
  Published：2013
- 稿件说明：
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Calculation and Experiment Study on Optimum Charge for a Small CO₂ Refrigeration System[J]. 2013, 47(3): 80-84. DOI: 10.7652/xjtuxb201303015.
DOI：

Calculation and Experiment Study on Optimum Charge for a Small CO₂ Refrigeration System[J]. 2013, 47(3): 80-84. DOI: 10.7652/xjtuxb201303015. DOI：

摘要

为了确定展示柜CO

制冷系统的最佳充注量及充注量对系统性能的影响

首先运用实验数据法和额定工况法对系统的充注量进行理论计算

在此基础上

进行了一系列实验研究。结果表明:针对小型传统制冷系统的充注量理论计算方法也适用于CO

系统

计算结果误差很小; 应用实验数据法和额定工况法计算小型CO

制冷系统充注量

结果几乎相同; 对于CO

跨临界制冷系统

如果采用回热循环

系统运行一段时间后将达到假临界状态

吸、排气温度产生突降。本研究可为小型CO

制冷系统最佳充注量的确定及如何维持系统高效运行提供理论指导。

Abstract

In order to determine the optimum charge of a display cabinet CO

refrigeration system and study the effect of the refrigerant charge on the system performance

the experimental data method and the rated operating method were used to predict the refrigerant charge of the system

and then the experiments were conducted at different charges. The results show that the calculation methods for small conventional refrigeration systems can also be applied to the CO

system with a very small calculation error. The calculation results of the experimental data method are almost the same as those of the rated operating method for the small CO

refrigeration system. For the CO

transcritical system

the pseudo critical state occurs after the sy

stem works for a while when the system adopts regenerative cycle

and the suction temperature and discharge temperature drop suddenly. The results of this study may be useful for determining optimal refrigerant charge and maintaining efficient operation of small CO

refrigeration systems.

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Keywords

references

王栋, 刘训海, 李蒙. 制冷剂充注量与毛细管长度对家用空调性能的影响 [J]. 流体机械, 2006, 34(4): 67-70.LONG Jianyou, ZHU Dongsheng, CHEN Li. Impact of refrigeration charge amount and capillary tube length on household air-conditioner [J]. Fluid Machinery, 2006, 34(4): 67-70.

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Related Author

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Related Institution

Dalian Institute of Chemical Physics, Chinese Academy of Sciences

Graduate School, Chinese Academy of Sciences

School of Energy and Power Engineering, Xi'an Jiaotong University

Institute of Refrigeration and Cryogenics, Zhejiang University

State Key Laboratory of Engines, Tianjin University

⁰

Calculation and Experiment Study on Optimum Charge for a Small CO2 Refrigeration System

DOI：10.7652/xjtuxb201303015

摘要

Abstract

关键词

Keywords

references

Calculation and Experiment Study on Optimum Charge for a Small CO₂ Refrigeration System