Next Article in Journal
Feature Selection for Partial Discharge Severity Assessment in Gas-Insulated Switchgear Based on Minimum Redundancy and Maximum Relevance
Previous Article in Journal
Two-Tier Reactive Power and Voltage Control Strategy Based on ARMA Renewable Power Forecasting Models
Article Menu
Issue 10 (October) cover image

Export Article

Open AccessArticle
Energies 2017, 10(10), 1517; doi:10.3390/en10101517

Investigation of the Thermodynamic Process of the Refrigerator Compressor Based on the m-θ Diagram

1
School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China
2
Nanjing Engineering Institute of Aircraft Systems, Shuige Road 33, Nanjing 211106, China
*
Author to whom correspondence should be addressed.
Received: 25 August 2017 / Revised: 16 September 2017 / Accepted: 25 September 2017 / Published: 1 October 2017
(This article belongs to the Section Energy Fundamentals and Conversion)
View Full-Text   |   Download PDF [4985 KB, uploaded 1 October 2017]   |  

Abstract

The variation of refrigerant mass in the cylinder of refrigerator compressor has a great influence on the compressor’s thermodynamic process. In this paper, the m-θ diagram, which represents the variation of refrigerant mass in compressor cylinder (m) and the crank angle (θ), is proposed to investigate the thermodynamic process of the refrigerator compressor. Comparing with the traditional pressure-Volume (p-V) indicator diagram, the refrigerant’s backflow trigged by the delayed closure of valve can be clearly expressed in the m-θ diagram together with the mass flow rate. A typical m-θ diagram was obtained by experimental and theoretical investigations. To improve the thermodynamic model of the compressor, a 3D fluid-structure interaction (FSI) FEA model has been introduced to find out the effective flow area of the valves. Based on the m-θ diagram, the effect of rotating speed on the backflow through the valve, which depends on the movement of the valve, has been investigated. Specific to the compressor used in this study, the maximum backflow through the suction valve and discharge valve occur at 3500 r·min−1 and 5500 r·min−1, respectively. View Full-Text
Keywords: thermodynamic model; m-θ diagram; mass flow rate; rotation speed; refrigerator compressor thermodynamic model; m-θ diagram; mass flow rate; rotation speed; refrigerator compressor
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Wang, T.; He, Z.; Guo, J.; Peng, X. Investigation of the Thermodynamic Process of the Refrigerator Compressor Based on the m-θ Diagram. Energies 2017, 10, 1517.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Energies EISSN 1996-1073 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top