@Article{hmt.19.33,
AUTHOR = {Andrés Zapata
, Carlos Amaris, Alexis Sagastume, Andrés Rodríguez},
TITLE = {VAPOUR ABSORPTION PROCESS IN AN NH<sub>3</sub>/LINO<sub>3</sub> BUBBLE  ABSORBER USING AN OPTIMIZED CFD MODEL},
JOURNAL = {Frontiers in Heat and Mass Transfer},
VOLUME = {19},
YEAR = {2022},
NUMBER = {1},
PAGES = {1--9},
URL = {http://www.techscience.com/fhmt/v19n1/52424},
ISSN = {2151-8629},
ABSTRACT = {The present study aims to assess the vapour bubble absorption into the ammonia/lithium nitrate (NH<sub>3</sub>/LiNO<sub>3</sub>) solution by using an optimized CFD 
model. A detailed methodology to build up the CFD model is presented, as well as its validation using experimental data. The operating conditions set 
corresponds to an absorption chiller driven by low-temperature heat sources such as solar energy in warm environments. Results evidenced that the 
Volume of Fluid and Mixture models are adequate to be used in the CFD model to predict the absorption process in the bubble absorber assessed 
depending on the mesh density refinement. Moreover, the heat transfer coefficient from the solution side and the absorption mass flux are the variables 
needed for reliable validation of the model. Finally, the absorbed flux estimated from the CFD model ranged between 3.2×10<sup>−3</sup> kg.m<sup>−2</sup>
.s<sup>−1</sup> and 4.4×10<sup>−3</sup> kg.m<sup>−2</sup>
.s<sup>−1</sup>
, while the solution side heat transfer coefficient varied between 457 W.m<sup>−2</sup>
.K<sup>−1</sup> and 786 W.m<sup>−2</sup>
.K<sup>−1</sup>
, under the conditions considered.},
DOI = {10.5098/hmt.19.33}
}