Next Article in Journal
ECOAL Project—Delivering Solutions for Integrated Monitoring of Coal-Related Fires Supported on Optical Fiber Sensing Technology
Previous Article in Journal
Computational Algorithms Underlying the Time-Based Detection of Sudden Cardiac Arrest via Electrocardiographic Markers
Article Menu
Issue 9 (September) cover image

Export Article

Open AccessFeature PaperArticle
Appl. Sci. 2017, 7(9), 955; doi:10.3390/app7090955

CO2 with Mechanical Subcooling vs. CO2 Cascade Cycles for Medium Temperature Commercial Refrigeration Applications Thermodynamic Analysis

Department of Mechanical Engineering and Construction, Jaume I University, Campus de Riu Sec s/n, Castellón de la Plana, E-12071, Spain
Author to whom correspondence should be addressed.
Received: 24 July 2017 / Revised: 4 September 2017 / Accepted: 11 September 2017 / Published: 16 September 2017
(This article belongs to the Section Mechanical Engineering)
View Full-Text   |   Download PDF [6069 KB, uploaded 16 September 2017]   |  


A recent trend to spread the use of CO2 refrigeration cycles in warm regions of the world is to combine a CO2 cycle with another one using a high performance refrigerant. Two alternatives are being considered: cascade and mechanical subcooling systems. Both respond to a similar configuration of the refrigeration cycle, they being based on the use of two compressors and same number of heat exchangers. However, the compressor, heat exchanger sizes and energy performance differ a lot between them. This work, using experimental relations for CO2 and R1234yf semi-hermetic compressors analyzes in depth both alternatives under the warm climate of Spain. In general, it was concluded that the CO2 refrigeration solution with mechanical subcooling would cover all the conditions with high overall energy efficiency, thus it being recommended for further extension of the CO2 refrigeration applications. View Full-Text
Keywords: CO2; transcritical; cascade; mechanical subcooling; energy efficiency CO2; transcritical; cascade; mechanical subcooling; energy efficiency

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

Nebot-Andrés, L.; Llopis, R.; Sánchez, D.; Catalán-Gil, J.; Cabello, R. CO2 with Mechanical Subcooling vs. CO2 Cascade Cycles for Medium Temperature Commercial Refrigeration Applications Thermodynamic Analysis. Appl. Sci. 2017, 7, 955.

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



[Return to top]
Appl. Sci. EISSN 2076-3417 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top