Experimental evaluation of ammonia adiabatic absorption into ammonia-lithium nitrate solution using a fog jet nozzle

Alejandro Zacarías; María Venegas; Antonio Lecuona; Rubén Ventas

doi:10.1016/j.applthermaleng.2012.07.006

Experimental evaluation of ammonia adiabatic absorption into ammonia-lithium nitrate solution using a fog jet nozzle

Alejandro Zacarías, María Venegas, Antonio Lecuona, Rubén Ventas

Escuela Superior de Ingeniería Mecánica y Eléctrica (ESIME), Unidad Azcapotzalco

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

This paper presents the experimental assessment of the adiabatic absorption of ammonia vapour into an ammonia-lithium nitrate solution using a fog jet nozzle. The ammonia mass fraction was kept constant at 46.08% and the absorber pressure was varied in the range 355-411 kPa. The nozzle was located at the top of the absorption chamber, at a height of 205 mm measured from the bottom surface. The diluted solution flow rate was modified between 0.04 and 0.08 kg s^-1 and the solution inlet temperature in the range 25.9-30.2 °C. The influence of these variables on the approach to adiabatic equilibrium factor, outlet subcooling, absorption ratio and mass transfer coefficient is analysed. The approach to adiabatic equilibrium factor for the conditions essayed is always between 0.82 and 0.93. Pressure drop of the solution entering the absorption chamber is also evaluated. Correlations for the approach to adiabatic equilibrium factor and the Sherwood number are given.

Original language	English
Pages (from-to)	781-790
Number of pages	10
Journal	Applied Thermal Engineering
Volume	50
Issue number	1
DOIs	https://doi.org/10.1016/j.applthermaleng.2012.07.006
State	Published - 2013

Keywords

Adiabatic absorption
Ammonia-lithium nitrate solution
Fog jet nozzle
Mass transfer
Pressure drop

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10.1016/j.applthermaleng.2012.07.006

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title = "Experimental evaluation of ammonia adiabatic absorption into ammonia-lithium nitrate solution using a fog jet nozzle",

abstract = "This paper presents the experimental assessment of the adiabatic absorption of ammonia vapour into an ammonia-lithium nitrate solution using a fog jet nozzle. The ammonia mass fraction was kept constant at 46.08% and the absorber pressure was varied in the range 355-411 kPa. The nozzle was located at the top of the absorption chamber, at a height of 205 mm measured from the bottom surface. The diluted solution flow rate was modified between 0.04 and 0.08 kg s-1 and the solution inlet temperature in the range 25.9-30.2 °C. The influence of these variables on the approach to adiabatic equilibrium factor, outlet subcooling, absorption ratio and mass transfer coefficient is analysed. The approach to adiabatic equilibrium factor for the conditions essayed is always between 0.82 and 0.93. Pressure drop of the solution entering the absorption chamber is also evaluated. Correlations for the approach to adiabatic equilibrium factor and the Sherwood number are given.",

keywords = "Adiabatic absorption, Ammonia-lithium nitrate solution, Fog jet nozzle, Mass transfer, Pressure drop",

author = "Alejandro Zacar{\'i}as and Mar{\'i}a Venegas and Antonio Lecuona and Rub{\'e}n Ventas",

note = "Funding Information: The financial support of this study by the Spanish Ministry of Education and Science research grant ENE2005-08255-C02-02 , ENE2009-11097 and Project CCG07-UC3M/ENE-3411, by the Local Government of Madrid and UC3M, is greatly appreciated. A. Zacar{\'i}as also acknowledges the financial support given by National Board of Science and Technology and the Instituto Polit{\'e}cnico Nacional of Mexico . The authors want to acknowledge the help of Mr. Manuel Santos, Mr. Carlos Cobos and Mr. Ciro Vereda in the laboratory work.",

year = "2013",

doi = "10.1016/j.applthermaleng.2012.07.006",

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volume = "50",

pages = "781--790",

journal = "Applied Thermal Engineering",

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AU - Zacarías, Alejandro

AU - Venegas, María

AU - Lecuona, Antonio

AU - Ventas, Rubén

N1 - Funding Information: The financial support of this study by the Spanish Ministry of Education and Science research grant ENE2005-08255-C02-02 , ENE2009-11097 and Project CCG07-UC3M/ENE-3411, by the Local Government of Madrid and UC3M, is greatly appreciated. A. Zacarías also acknowledges the financial support given by National Board of Science and Technology and the Instituto Politécnico Nacional of Mexico . The authors want to acknowledge the help of Mr. Manuel Santos, Mr. Carlos Cobos and Mr. Ciro Vereda in the laboratory work.

PY - 2013

Y1 - 2013

N2 - This paper presents the experimental assessment of the adiabatic absorption of ammonia vapour into an ammonia-lithium nitrate solution using a fog jet nozzle. The ammonia mass fraction was kept constant at 46.08% and the absorber pressure was varied in the range 355-411 kPa. The nozzle was located at the top of the absorption chamber, at a height of 205 mm measured from the bottom surface. The diluted solution flow rate was modified between 0.04 and 0.08 kg s-1 and the solution inlet temperature in the range 25.9-30.2 °C. The influence of these variables on the approach to adiabatic equilibrium factor, outlet subcooling, absorption ratio and mass transfer coefficient is analysed. The approach to adiabatic equilibrium factor for the conditions essayed is always between 0.82 and 0.93. Pressure drop of the solution entering the absorption chamber is also evaluated. Correlations for the approach to adiabatic equilibrium factor and the Sherwood number are given.

AB - This paper presents the experimental assessment of the adiabatic absorption of ammonia vapour into an ammonia-lithium nitrate solution using a fog jet nozzle. The ammonia mass fraction was kept constant at 46.08% and the absorber pressure was varied in the range 355-411 kPa. The nozzle was located at the top of the absorption chamber, at a height of 205 mm measured from the bottom surface. The diluted solution flow rate was modified between 0.04 and 0.08 kg s-1 and the solution inlet temperature in the range 25.9-30.2 °C. The influence of these variables on the approach to adiabatic equilibrium factor, outlet subcooling, absorption ratio and mass transfer coefficient is analysed. The approach to adiabatic equilibrium factor for the conditions essayed is always between 0.82 and 0.93. Pressure drop of the solution entering the absorption chamber is also evaluated. Correlations for the approach to adiabatic equilibrium factor and the Sherwood number are given.

KW - Adiabatic absorption

KW - Ammonia-lithium nitrate solution

KW - Fog jet nozzle

KW - Mass transfer

KW - Pressure drop

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DO - 10.1016/j.applthermaleng.2012.07.006

M3 - Artículo

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JO - Applied Thermal Engineering

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Experimental evaluation of ammonia adiabatic absorption into ammonia-lithium nitrate solution using a fog jet nozzle

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