A theoretical and experimental analysis of a self-contained R-290 refrigeration unit applied to a glass door reach-in supermarket display case.
Number: pap. 2456
Author(s) : RONZONI A. F., HEINZLE G., FURLAN A. A., et al.
Summary
This paper presents a theoretical and experimental analysis of a self-contained variable speed R-290 refrigeration unit applied to a typical 1.25m long two-glass-door reach-in supermarket display case, originally designed to run on an incorporated R-404A single speed refrigeration unit. A semi-empirical mathematical model was put forward to predict system energy consumption and cabinet psychometrics. One energy consumption test was performed at 32°C ambient temperature and used to calibrate components overall heat transfer coefficients. The model validation was then performed by using the calibrated model to predict the system energy consumption at 27°C ambient temperature. A good agreement between experimental and numerical results was found with errors lower than 1% and 3% on energy consumption and compressor running time ratio respectively. The model was also applied to predict annual energy consumption for two units (R-290 self-contained and R-404A incorporated) as a function of the monthly average ambient temperatures for Joinville, Brazil. The simulation results indicate an annual energy consumption saving up to 30% when a self-contained R-290 variable speed hermetic refrigeration unit is applied to a cabinet originally designed for an incorporated R-404A single speed compressor refrigeration unit.
Available documents
Format PDF
Pages: 10
Available
Public price
20 €
Member price*
15 €
* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).
Details
- Original title: A theoretical and experimental analysis of a self-contained R-290 refrigeration unit applied to a glass door reach-in supermarket display case.
- Record ID : 30024564
- Languages: English
- Source: 2018 Purdue Conferences. 17th International Refrigeration and Air-Conditioning Conference at Purdue.
- Publication date: 2018/07/09
Links
See other articles from the proceedings (252)
See the conference proceedings
Indexing
-
Themes:
Hydrocarbons;
Supermarkets, display cabinets - Keywords: Variable speed; Display cabinet; R404A; R290; Supermarket; Propane; Expérimentation
-
Field measurements and analysis of supermarket ...
- Author(s) : KHMELNIUK M., KONSTANTINOV I., WOZNIY W.
- Date : 2021/01/13
- Languages : English
- Source: 10th IIR Conference on Compressors and Refrigerants.
- Formats : PDF
View record
-
Supermarket refrigeration: propane refrigerant ...
- Author(s) : PEJKOVIC S.
- Date : 2017/12/06
- Languages : English
- Source: 48th International HVAC&R Congress and Exhibition.
- Formats : PDF
View record
-
CO2 or R290 for Supermarket Applications – Pros...
- Author(s) : RINNE F., PAATZSCH R.
- Date : 2019/04/11
- Languages : English
- Source: 8th Conference on Ammonia and CO2 Refrigeration Technology. Proceedings: Ohrid, North Macedonia, Avril 11-13, 2019.
- Formats : PDF
View record
-
Optimization of water cooled low charge propane...
- Author(s) : HUCHTEMANN K., WINANDY E., BERTAGNOLIO S.
- Date : 2019/08/24
- Languages : English
- Source: Proceedings of the 25th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
- Formats : PDF
View record
-
Study on Energy Efficiency of an Off-Grid Vendi...
- Author(s) : CALOTA R., SAVANIU M., GIRIP A., NASTASE I., GEORGESCU M. R., TONCIU O.
- Date : 2022/06
- Languages : English
- Source: Energies - 15 - 12
- Formats : PDF
View record