Share Recommended by the IIR / 
IIR document
Transcritical R744 multi-temperature refrigerated container system designed for high ambient temperature operation.
Number: 292575
Author(s) : LAWRENCE N., ELBEL S., HRNJAK P.
Summary
The paper describes the experimental evaluation of a transcritical R744 system designed to serve in a multi-temperature refrigerated container unit. The high ambient temperatures often encountered in this application, especially for a fluid like CO2, require careful attention to compressor selection and gas cooler design. To evaluate different compressor options, a laboratory breadboard CO2 system was used to test a single-stage compressor compared to an enhanced system with multi-stage compression and intercooler plus an ejector for improved evaporator performance and pressure lift. The results of the experimental evaluation show that the single-stage compression system is limited to an ambient temperature of about 40°C, while the multi-stage compression system is able to operate with sufficient capacity at ambient temperature in excess of 50°C. Also presented is the actual prototype CO2 refrigerated container unit to be evaluated.
Available documents
Paper
Pages: 8
Available
Public price
20 €
Member price*
Free
* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).
PowerPoint version
Pages: 17
Available
Public price
5 €
Member price*
Free
* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).
Details
- Original title: Transcritical R744 multi-temperature refrigerated container system designed for high ambient temperature operation.
- Record ID : 30027579
- Languages: English
- Subject: Technology
- Source: 6th IIR International Conference on Sustainability and the Cold Chain. Proceedings: Nantes, France, August 26-28 2020
- Publication date: 2020/08/26
- DOI: http://dx.doi.org/10.18462/iir.iccc.2020.292575
- Document available for consultation in the library of the IIR headquarters only.
Links
See other articles from the proceedings (84)
See the conference proceedings
-
Investigation of a two-phase ejector as a secon...
- Author(s) : SMIERCIEW K., BUTRYMOWICZ D., KARWACKI J., et al.
- Date : 2011/08/21
- Languages : English
- Source: Proceedings of the 23rd IIR International Congress of Refrigeration: Prague, Czech Republic, August 21-26, 2011. Overarching theme: Refrigeration for Sustainable Development.
- Formats : PDF
View record
-
Simultaneous implementation of rotary pressure ...
- Author(s) : SAEED M. Z., HAFNER A., THATTE A., GABRIELII C. H.
- Date : 2022/06/13
- Languages : English
- Source: 15th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL2022). Proceedings. Trondheim, Norway, June 13-15th 2022.
- Formats : PDF
View record
-
Analysis and comparison of two-phase ejector pe...
- Author(s) : LAWRENCE N., ELBEL S.
- Date : 2014/07/14
- Languages : English
- Source: 2014 Purdue Conferences. 15th International Refrigeration and Air-Conditioning Conference at Purdue.
- Formats : PDF
View record
-
Assessment of maximum allowable discharge press...
- Author(s) : JAKONCZUK P., SMIERCIEW K., BUTRYMOWICZ D., GAGAN J., MANIA T.
- Date : 2023/08/21
- Languages : English
- Source: Proceedings of the 26th IIR International Congress of Refrigeration: Paris , France, August 21-25, 2023.
- Formats : PDF
View record
-
Application of vortex control to a transcritica...
- Author(s) : ZHU J., ELBEL S.
- Date : 2018/04/06
- Languages : English
- Source: 5th IIR International Conference on Sustainability and the Cold Chain. Proceedings: Beijing, Chine, 6-8 avril 2018
- Formats : PDF
View record