Extension of the characteristic equation to absorption chillers with adiabatic absorbers

Gutiérrez Urueta, Geydy and Rodríguez Aumente, Pedro A. and Ziegler, F. and Lecuona Newman, Antonio and Rodríguez Hidalgo, María del Carmen (2012). Extension of the characteristic equation to absorption chillers with adiabatic absorbers. "International Journal of Refrigeration", v. 35 (n. 3); pp. 709-718. ISSN 0140-7007. https://doi.org/10.1016/j.ijrefrig.2011.10.010.

Description

Title: Extension of the characteristic equation to absorption chillers with adiabatic absorbers
Author/s:
  • Gutiérrez Urueta, Geydy
  • Rodríguez Aumente, Pedro A.
  • Ziegler, F.
  • Lecuona Newman, Antonio
  • Rodríguez Hidalgo, María del Carmen
Item Type: Article
Título de Revista/Publicación: International Journal of Refrigeration
Date: May 2012
ISSN: 0140-7007
Volume: 35
Subjects:
Freetext Keywords: Absorption; Lithium bromide; Temperature difference; Chilled water; Air conditioning
Faculty: E.T.S.I. Navales (UPM)
Department: Sistemas Oceánicos y Navales [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Various researchers have developed models of conventional H2O–LiBr absorption machines with the aim of predicting their performance. In this paper, the methodology of characteristic equations developed by Hellmann et al. (1998) is applied. This model is able to represent the capacity of single effect absorption chillers and heat pumps by means of simple algebraic equations. An extended characteristic equation based on a characteristic temperature difference has been obtained, considering the facility features. As a result, it is concluded that for adiabatic absorbers a subcooling temperature must be specified. The effect of evaporator overflow has been characterized. Its influence on cooling capacity has been included in the extended characteristic equation. Taking into account the particular design and operation features, a good agreement between experimental performance data and those obtained through the extended characteristic equation has been achieved at off-design operation. This allows its use for simulation and control purposes.

More information

Item ID: 22620
DC Identifier: http://oa.upm.es/22620/
OAI Identifier: oai:oa.upm.es:22620
DOI: 10.1016/j.ijrefrig.2011.10.010
Official URL: http://www.sciencedirect.com/science/article/pii/S0140700711002556
Deposited by: Memoria Investigacion
Deposited on: 05 Apr 2014 07:53
Last Modified: 21 Apr 2016 17:36
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