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Titolo:
Design and rating of dedicated mechanical-subcooling vapour compression refrigeration systems
Autore:
Khan, JUR; Zubair, SM;
Indirizzi:
King Fahd Univ Petr & Minerals, Dept Mech Engn, Dhahran 31261, Saudi Arabia King Fahd Univ Petr & Minerals Dhahran Saudi Arabia 31261 , Saudi Arabia
Titolo Testata:
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART A-JOURNAL OF POWER AND ENERGY
fascicolo: A5, volume: 214, anno: 2000,
pagine: 455 - 471
SICI:
0957-6509(2000)214:A5<455:DARODM>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
CYCLES;
Keywords:
mechanical-subcooling system; thermodynamic models; characteristic performance curves;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
11
Recensione:
Indirizzi per estratti:
Indirizzo: Zubair, SM King Fahd Univ Petr & Minerals, Dept Mech Engn, KFUPM Box 1474,Dhahran 31261, Saudi Arabia King Fahd Univ Petr & Minerals KFUPM Box 1474 Dhahran Saudi Arabia 31261
Citazione:
J.U.R. Khan e S.M. Zubair, "Design and rating of dedicated mechanical-subcooling vapour compression refrigeration systems", P I MEC E A, 214(A5), 2000, pp. 455-471

Abstract

Subcooling of the refrigerant at the exit of the condenser in a vapour compression refrigeration system allows the refrigerant to enter the main cycle evaporator with a lower quality and thus allows the refrigerant to absorbmore heat in the evaporator, thereby improving the coefficient of performance (COP) of the system. In a dedicated mechanical-subcooling vapour compression refrigeration system, the subcooling is performed by utilizing a small dedicated vapour compression refrigeration cycle. This cycle is coupled to the main cycle at the exit of the condenser. In this paper, thermodynamicmodels of the dedicated mechanical-subcooling systems are developed to simulate the actual performance of the system, particularly with respect to the subcooler saturation temperature in addition to the heat exchanger areas. It is demonstrated that the performance of the overall cycle is improved over the corresponding simple cycle and this improvement is found to be related to the refrigerant saturation temperature of the subcooler. The models are also used to predict an optimum distribution of the total heat exchanger area between the evaporator and condenser.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 07/07/20 alle ore 22:11:16