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Title: Optimum hot water temperature for absorption solar cooling

Abstract

The hot water temperature that maximizes the overall instantaneous efficiency of a solar cooling facility is determined. A modified characteristic equation model is used and applied to single-effect lithium bromide-water absorption chillers. This model is based on the characteristic temperature difference and serves to empirically calculate the performance of real chillers. This paper provides an explicit equation for the optimum temperature of vapor generation, in terms of only the external temperatures of the chiller. The additional data required are the four performance parameters of the chiller and essentially a modified stagnation temperature from the detailed model of the thermal collector operation. This paper presents and discusses the results for small capacity machines for air conditioning of homes and small buildings. The discussion highlights the influence of the relevant parameters. (author)

Authors:
; ; ;  [1];  [2]
  1. Dpto. Ingenieria Termica y de Fluidos, Universidad Carlos III de Madrid, Avda. Universidad 30, 28911 Leganes, Madrid (Spain)
  2. ESIME UPA, IPN, Av. de las Granjas 682, Col. Santa Catarina, 02550, D.F. Mexico (Mexico)
Publication Date:
OSTI Identifier:
21227415
Resource Type:
Journal Article
Journal Name:
Solar Energy
Additional Journal Information:
Journal Volume: 83; Journal Issue: 10; Other Information: Elsevier Ltd. All rights reserved; Journal ID: ISSN 0038-092X
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; HOT WATER; ABSORPTION; LITHIUM BROMIDES; EQUATIONS; HOUSES; SOLAR AIR CONDITIONING; PERFORMANCE; BUILDINGS; EFFICIENCY; STAGNATION; SOLAR AIR CONDITIONERS; OPTIMIZATION; PARAMETRIC ANALYSIS; Absorption chillers

Citation Formats

Lecuona, A, Ventas, R, Venegas, M, Salgado, R, and Zacarias, A. Optimum hot water temperature for absorption solar cooling. United States: N. p., 2009. Web. doi:10.1016/J.SOLENER.2009.06.016.
Lecuona, A, Ventas, R, Venegas, M, Salgado, R, & Zacarias, A. Optimum hot water temperature for absorption solar cooling. United States. https://doi.org/10.1016/J.SOLENER.2009.06.016
Lecuona, A, Ventas, R, Venegas, M, Salgado, R, and Zacarias, A. 2009. "Optimum hot water temperature for absorption solar cooling". United States. https://doi.org/10.1016/J.SOLENER.2009.06.016.
@article{osti_21227415,
title = {Optimum hot water temperature for absorption solar cooling},
author = {Lecuona, A and Ventas, R and Venegas, M and Salgado, R and Zacarias, A},
abstractNote = {The hot water temperature that maximizes the overall instantaneous efficiency of a solar cooling facility is determined. A modified characteristic equation model is used and applied to single-effect lithium bromide-water absorption chillers. This model is based on the characteristic temperature difference and serves to empirically calculate the performance of real chillers. This paper provides an explicit equation for the optimum temperature of vapor generation, in terms of only the external temperatures of the chiller. The additional data required are the four performance parameters of the chiller and essentially a modified stagnation temperature from the detailed model of the thermal collector operation. This paper presents and discusses the results for small capacity machines for air conditioning of homes and small buildings. The discussion highlights the influence of the relevant parameters. (author)},
doi = {10.1016/J.SOLENER.2009.06.016},
url = {https://www.osti.gov/biblio/21227415}, journal = {Solar Energy},
issn = {0038-092X},
number = 10,
volume = 83,
place = {United States},
year = {Thu Oct 15 00:00:00 EDT 2009},
month = {Thu Oct 15 00:00:00 EDT 2009}
}