Summary
At present there is a lack of a concept which can be used to evaluate and compare efficiency for installed refrigeration systems using short term measurements. Traditionally COP (Coefficient of Performance) has been used but it has a weakness as a comparator as it is strongly dependent on operating conditions. System Efficiency Index (SEI) is the ratio between the measured COP and the COP for an ideal process, known as the Carnot efficiency operating between the same temperature levels. In collaboration between SP Technical Research Institute of Sweden, IOR and VDMA the method has been further developed. This paper will focus on the method and results from the implementation of SEI from field measurements for, in the first step, condensing units and chillers. The principle is the same for all kind of refrigeration systems. In the next step more measurements for refrigeration systems will be evaluated.
Available documents
Format PDF
Pages: 8 p.
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: System efficiency index, SEI, a key performance indicator for field measurements of refrigeration, air conditioning and heat pump systems.
- Record ID : 30012086
- Languages: English
- Source: 3rd IIR International Conference on Sustainability and the Cold Chain. Proceedings: London, UK, June 23-25, 2014
- Publication date: 2014/06/23
Links
See other articles from the proceedings (87)
See the conference proceedings
Indexing
- Themes: Energy efficiency, energy savings
- Keywords: Refrigerating system; Measurement; Temperature; Efficiency; Performance; COP
-
Optimisation through performance inspections.
- Author(s) : BERGLÖF K.
- Date : 2010/06/13
- Languages : English
- Source: IIR/Eurotherm sustainable refrigeration and heat pump technology conference. Proceedings of the Eurotherm Seminar No. 88, Stockholm, Sweden, June 13-16, 2010.
- Formats : PDF
View record
-
System efficiency index a tool for energy optim...
- Author(s) : BERGLÖF K.
- Date : 2015/06/12
- Languages : English
- Source: Le ultime tecnologie del freddo e del condizionamento. Atti del 16° Convegno Europeo: June 12-13, 2015, Milano, Italia.
- Formats : PDF
View record
-
Panorama des économies d'énergie dans les systè...
- Author(s) : BORLEIN C.
- Date : 2010/11
- Languages : French
- Source: Revue générale du Froid & du Conditionnement d'air - vol. 100 - n. 1108
View record
-
Theoretical analysis of a CO2-NH3 cascade refri...
- Author(s) : DOPAZO J. A., FERNÁNDEZ-SEARA J., SIERES J., et al.
- Date : 2009/06
- Languages : English
- Source: Applied Thermal Engineering - vol. 29 - n. 8-9
View record
-
Thermodynamic, energy-efficiency, and economic ...
- Author(s) : KAZACHKI G., GAGE C.
- Date : 1997/09/01
- Languages : English
- Source: Heat Pump Systems, Energy Efficiency, and Global Warming.
- Formats : PDF
View record