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Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции
Atomization and Sprays
Импакт фактор: 1.262 5-летний Импакт фактор: 1.518 SJR: 0.814 SNIP: 1.18 CiteScore™: 1.6

ISSN Печать: 1044-5110
ISSN Онлайн: 1936-2684

Выпуски:
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Atomization and Sprays

DOI: 10.1615/AtomizSpr.v15.i4.60
pages 439-456

DESIGN OF SPRAY ABSORBERS FOR LiNO3-NH3 ABSORPTION REFRIGERATION SYSTEMS

M. Venegas
Unidad Asociada de Ingenieria Termicay de Fluidos CSIC-UC3M; Departamento de Ingenieria Termicay de Fluidos, Universidad Carlos III de Madrid, Avda. Universidad, 30, 28911 Leganes, Madrid, Spain
M. Izquierdo
Unidad Asociada de Ingenieria Termicay de Fluidos CSIC-UC3M; Instituto de Ciencias de la Construccion Eduardo Torroja (CSIC), C. Serrano Galvache, s/n, 28033, Madrid, Spain
J. I. Nogueira
Unidad Asociada de Ingenieria Termicay de Fluidos CSIC-UC3M; Departamento de Ingenieria Termicay de Fluidos, Universidad Carlos III de Madrid, Avda. Universidad, 30, 28911 Leganes, Madrid, Spain

Краткое описание

In the present article, a numerical procedure is used to design spray absorbers, simulating the heat and mass transfer between solution drops and refrigerant vapor. The simulation procedure is applied for designing the absorption chambers of a double-stage refrigeration system using the lithium nitrate-ammonia solution. Results show that about 60% of the total mass transfer occurs during the drops' deceleration period. This period represents 13.4% and 11.6% of the drops' residence time inside the low- and high-pressure absorbers until they reach the equilibrium state, respectively. For the cases considered, the absorption chamber lengths are equal to 18.4 cm and 20.4 cm. The drops stay in the uniform movement zones approximately 86.1% and 88.3% of the residence time, respectively. Average mass transfer coefficients inside the absorbers are 1.86 × 10−4 m/s and 2.35 × 10−4 m/s in each case.


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