Share

IIR document

Theoretical analysis of dynamic characteristics in linear compressors.

Author(s) : ZHANG X., ZIVIANI D., BRAUN J. E., et al.

Type of article: Article, IJR article

Summary

Linear compressor technology is characterized by the absence of a crank mechanism, which has gained increasing attention in vapor compression systems due to its compactness and lower friction losses in comparison to conventional reciprocating compressors. Limited work was found in the open literature related to the development and in-depth validation of a comprehensive linear compressor dynamic model that couples thermodynamic aspects with both mechanical and electrical sub-models. This paper presents a comprehensive and generalized simulation model that is used to simulate the dynamic performance of a linear compressor. The model is based on mass and energy balance equations applied to open control volumes. The overall model is composed of several sub-models including the piston dynamics, electrical motor, valve dynamics, and leakage flows. The thermodynamic model and the sub-models are integrated into a compressor overall energy balance that describes the different heat flows and losses. The linear compressor model is able to predict both transient and steady-state behaviors of the piston movement, internal pressure and temperatures as well as the overall performance. Comparisons of predicted and measured mass flow rates as a function of operating frequency are also presented within this work.

Available documents

Format PDF

Pages: 114-127

Available

  • Public price

    20 €

  • Member price*

    Free

* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).

Details

  • Original title: Theoretical analysis of dynamic characteristics in linear compressors.
  • Record ID : 30027198
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 109
  • Publication date: 2020/01
  • DOI: http://dx.doi.org/10.1016/j.ijrefrig.2019.09.015

Links


See other articles in this issue (20)
See the source

Indexing