Article | Proceedings of the 9th International MODELICA Conference; September 3-5; 2012; Munich; Germany | Modeling of a falling film evaporator

Title:
Modeling of a falling film evaporator
Author:
Alberto de La Calle: CIEMAT-Plataforma Solar de AlmerĂ­a, Tabernas, Spain Luis J. Yebra: CIEMAT-Plataforma Solar de AlmerĂ­a, Tabernas, Spain Sebastián Dormido: UNED, Escuela Tåcnica Superior de IngenierĂ­a Informática, Madrid, Spain
DOI:
10.3384/ecp12076941
Download:
Full text (pdf)
Year:
2012
Conference:
Proceedings of the 9th International MODELICA Conference; September 3-5; 2012; Munich; Germany
Issue:
076
Article no.:
098
Pages:
941-948
No. of pages:
8
Publication type:
Abstract and Fulltext
Published:
2012-11-19
ISBN:
978-91-7519-826-2
Series:
Linköping Electronic Conference Proceedings
ISSN (print):
1650-3686
ISSN (online):
1650-3740
Publisher:
Linköping University Electronic Press; Linköpings universitet


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Falling film evaporators have demonstrated a good performance in air-conditioning and refrigeration. This paper presents the development of a detailed falling film evaporator model. The model is based on classical Newton’s viscosity law and Nusselt falling film theory. A library of evaporator components compatible with Modelica.Fluid; Modelica.Thermal and Modelica.Media has been implemented. The simulations presented have the expected behaviour. These models will be used to a complete model of a heat pump.

Keywords: Falling film; evaporator; heat pump; dryout; simulation; object-oriented modeling

Proceedings of the 9th International MODELICA Conference; September 3-5; 2012; Munich; Germany

Author:
Alberto de La Calle, Luis J. Yebra, Sebastián Dormido
Title:
Modeling of a falling film evaporator
DOI:
http://dx.doi.org/10.3384/ecp12076941
References:
[1] D. C. Alarcón-Padilla; J. Blanco-Gálvez; L. García-Rodríguez; W. Gernjak; and S. Malato. First experimental results of a new hybrid solar/gas multi-effect distillation system: the AQUASOL project. Desalination; 220(1-3):619–625; 2008. doi: 10.1016/j.desal.2007.05.027.
[2] D. C. Alarcón-Padilla; L. García-Rodríguez; and J. Blanco-Gálvez. Assessment of an absorption heat pump coupled to a multi-effect distillation unit within AQUASOL project. Desalination; 212(1-3):303–310; 2007. doi: 10.1016/j.desal.2006.10.015.
[3] D. C. Alarcón-Padilla; L. García-Rodríguez; and J. Blanco-Gálvez. Experimental assessment of connection of an absorption heat pump to a multieffect distillation unit. Desalination; 250(2):500–505; 2010. doi: 10.1016/j.desal.2009.06.056.
[4] G. Ribatski and A. M. Jacobi. Falling-film evaporation on horizontal tubes—a critical review. International Journal of Refrigeration; 28(5):635–653; 2005. doi: 10.1016/j.ijrefrig.2004.12.002.
[5] G. Ribatski and J. R. Thome. Experimental study on the onset of local dryout in an evaporating falling film on horizontal plain tubes. Experimental Thermal and Fluid Science; 31(6):483–493; 2007. doi: 10.1016/j.expthermflusci.2006.05.010.
[6] E. Zarza; J. Ajona; J. León; A. Gregorzewski; and K. Genthner. Solar thermal desalination project at the Plataforma Solar de Almeria. Solar Energy Materials; 24(1–4):608–622; 1991. doi: 10.1016/0165-1633(91)90094-2.

Proceedings of the 9th International MODELICA Conference; September 3-5; 2012; Munich; Germany

Author:
Alberto de La Calle, Luis J. Yebra, Sebastián Dormido
Title:
Modeling of a falling film evaporator
DOI:
http://dx.doi.org/10.3384/ecp12076941
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