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Experimental evaluation of the energy efficiency of a CO2 refrigerating plant working in transcritical conditions
- Source :
- RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia, instname
- Publication Year :
- 2008
- Publisher :
- Elsevier, 2008.
-
Abstract
- [EN] This work presents the experimental evaluation of the energy efficiency and optimal gas-cooler pressures of a single-stage refrigerating plant working with carbon dioxide as refrigerant in transcritical conditions. The performance of the plant was tested at three different evaporating temperatures (-0.9, -10.1 and -18.1 degrees C), for three gas-cooler refrigerant outlet temperatures (31.2, 33.6 and 40.0 degrees C) at each evaporating temperature and in a wide range of gas-cooler pressures (74.4-104.7 bar). The experimental tests enabled us to calculate accurately the optimal gas-cooler pressures and compare them with the most commonly used relations to define this value in single-stage refrigerating cycles operating with carbon dioxide in transcritical conditions. Furthermore, an analysis of the reduction in energy efficiency produced in the plant if the optimum pressure is not well defined is also presented.<br />The authors are indebted to Frost-Trol S.A. (www.frosttrol.com) and the Spanish Ministry of Education and Science (ENE2006-09972/CON) for the economical support given to the present work and for the Grant BES-2007-16820 linked to the Ministry project
- Subjects :
- Optimum pressure
Work (thermodynamics)
Engineering
Transcritical cycle
business.industry
Compression system
Energy Engineering and Power Technology
Mechanical engineering
Industrial and Manufacturing Engineering
Refrigerating plant
Refrigerant
Carbon dioxide
Gas-cooler
MAQUINAS Y MOTORES TERMICOS
Christian ministry
CO2
Gas cooler
business
Efficient energy use
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia, instname
- Accession number :
- edsair.doi.dedup.....689b4942fe474d8c6afdabd856a6c722