Título:
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Energetic evaluation of an internal heat exchanger in a CO2 transcritical refrigeration plant using experimental data
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Autor:
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Torrella Alcaraz, Enrique
Sanchez, D.
Llopis, R.
Cabello, R.
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Fecha difusión:
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Resumen:
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[EN] The performance of an Internal Heat Exchanger (IHX) operating in a CO 2 transcritical refrigeration plant is analysed, from an energetic point of view, in this work. The evaluation is based on experimental data by ...[+]
[EN] The performance of an Internal Heat Exchanger (IHX) operating in a CO 2 transcritical refrigeration plant is analysed, from an energetic point of view, in this work. The evaluation is based on experimental data by contrasting the performance of the plant working with (44 tests) and without the IHX (46 tests) at the same operating conditions. The experimental evaluation covers three evaporating levels (-5, -10 and -15 °C), at two different gas-cooler outlet temperatures each (31, 34 °C), for a wide range of gas-cooler operating pressures (74.5-105.9 bar). The thermal effectiveness of the IHX is empirically analysed for the different operating conditions in the first part of the paper. Moreover, the relation of its effectiveness with the operating parameters is presented. The second part is devoted to analyse the modification of the energetic performance of the plant caused by the IHX. The results show a maximum increment on cooling capacity of 12%, an increment of the efficiency of the plant up to 12% and a maximum increase on discharge temperature of 10 °C at -15 °C of evaporating temperature. © 2010 Elsevier Ltd and IIR. All rights reserved.
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Palabras clave:
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Calculation
,
Carbon dioxide
,
Efficiency-superheat
,
Internal heat exchanger
,
Refrigeration system
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Transcritical cycle
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Cooling Capacity
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Discharge temperature
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Evaporating temperature
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Experimental data
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Experimental evaluation
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Operating condition
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Operating parameters
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Operating pressure
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Outlet temperature
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Refrigeration plants
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Thermal effectiveness
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Transcritical
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Cooling systems
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Heat exchangers
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Refrigerating machinery
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Refrigerators
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Refrigeration
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Derechos de uso:
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Cerrado |
Fuente:
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International Journal of Refrigeration. (issn:
0140-7007
)
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DOI:
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10.1016/j.ijrefrig.2010.07.006
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Editorial:
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ELSEVIER SCI LTD
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Versión del editor:
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https://doi.org/10.1016/j.ijrefrig.2010.07.006
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Código del Proyecto:
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info:eu-repo/grantAgreement/MICINN//CTM2008-06468-C02-01/ES/ESTRATEGIA DE AHORRO Y EFICIENCIA ENERGETICA EN PRODUCCION DE FRIO POR COMPRESION CON REFRIGERANTES HFC/
info:eu-repo/grantAgreement/MARM//200800050084716/ES/RNCO2: NUEVAS TECNOLOGÍAS FRIGORÍFICAS DE COMPRESIÓN DE VAPOR CON UTILIZACIÓN DEL REFRIGERANTE NATURALL CO2 EN SUSTITUCIÓN DE LOS ACTUALES HFC/
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Agradecimientos:
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The authors are indebted to the Spanish Ministry of Education and Science (CTM2008-06468-C02-02/TECNO) and to the Spanish Ministry of the Environment and Rural and Marine Affairs (200800050084716) for their economic support ...[+]
The authors are indebted to the Spanish Ministry of Education and Science (CTM2008-06468-C02-02/TECNO) and to the Spanish Ministry of the Environment and Rural and Marine Affairs (200800050084716) for their economic support to the present work.
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Tipo:
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Artículo
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