[article] 
inInternational journal of refrigeration > Vol. 33 N° 3 (Mai 2010) . - pp. 510-520

Titre :	Theoretical study on separate sensible and latent cooling air-conditioning system
Titre original :	Etude théorique d'un système de conditionnement d'air fondé sur le refroidissement sensible et latent
Type de document :	texte imprimé
Auteurs :	Jiazhen Ling, Auteur ; Yunho Hwang, Auteur ; Reinhard Radermacher, Auteur
Année de publication :	2010
Article en page(s) :	pp. 510-520
Note générale :	Génie Mécanique
Langues :	Anglais (eng)
Mots-clés :	Air conditioning Design Process Chilling Heat exchange Separation Sensible heat Latent Vapour Compression
Index. décimale :	621.5 Energie pneumatique. Machinerie et outils. Réfrigération
Résumé :	The advantage of separating sensible and latent cooling (SSLC) via the use of separate cycles is saving energy by raising the evaporating temperature of the sensible cooling process. In this study, the pertinent characteristics of the SSLC system using two parallel vapor compression cycles were investigated. The requirement for high air flow rate through the sensible evaporator was the most important hardware design issue, since it might lead to a high air-side pressure drop. To address this issue, a new air distribution method, which could significantly reduce the pressure drop, was proposed to replace the conventional one. The heat exchanger modeling results demonstrated that sensible evaporators of the SSLC system could provide the equivalent cooling capacity at reduced air-side pressure drop to that of the conventional system without increasing the total heat transfer area. Although initial investment of the SSLC system is projected to be higher than the conventional system, the estimated operating cost of the SSLC system is lower than the conventional one because of the low energy consumption.
DEWEY :	621.5
ISSN :	0140-7007
En ligne :	http://www.sciencedirect.com/science/article/pii/S0140700709002758

[article] Theoretical study on separate sensible and latent cooling air-conditioning system = Etude théorique d'un système de conditionnement d'air fondé sur le refroidissement sensible et latent [texte imprimé] / Jiazhen Ling, Auteur ; Yunho Hwang, Auteur ; Reinhard Radermacher, Auteur . - 2010 . - pp. 510-520.
Génie Mécanique
Langues : Anglais (eng)
in International journal of refrigeration > Vol. 33 N° 3 (Mai 2010) . - pp. 510-520

Mots-clés :	Air conditioning Design Process Chilling Heat exchange Separation Sensible heat Latent Vapour Compression
Index. décimale :	621.5 Energie pneumatique. Machinerie et outils. Réfrigération
Résumé :	The advantage of separating sensible and latent cooling (SSLC) via the use of separate cycles is saving energy by raising the evaporating temperature of the sensible cooling process. In this study, the pertinent characteristics of the SSLC system using two parallel vapor compression cycles were investigated. The requirement for high air flow rate through the sensible evaporator was the most important hardware design issue, since it might lead to a high air-side pressure drop. To address this issue, a new air distribution method, which could significantly reduce the pressure drop, was proposed to replace the conventional one. The heat exchanger modeling results demonstrated that sensible evaporators of the SSLC system could provide the equivalent cooling capacity at reduced air-side pressure drop to that of the conventional system without increasing the total heat transfer area. Although initial investment of the SSLC system is projected to be higher than the conventional system, the estimated operating cost of the SSLC system is lower than the conventional one because of the low energy consumption.
DEWEY :	621.5
ISSN :	0140-7007
En ligne :	http://www.sciencedirect.com/science/article/pii/S0140700709002758