TY - JOUR
T1 - Experimental assessment of ammonia adiabatic absorption into ammonia-lithium nitrate solution using a flat fan nozzle
AU - Zacarías, A.
AU - Venegas, M.
AU - Ventas, R.
AU - Lecuona, A.
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 and Mr. Carlos Cobos in the laboratory work.
PY - 2011/11
Y1 - 2011/11
N2 - This paper presents the experimental evaluation of the adiabatic absorption of ammonia vapour into ammonia-lithium nitrate solution using a flat fan nozzle and an upstream single-pass subcooler. Data are representative of the working conditions of adiabatic absorbers in absorption chillers. The nozzle was located at the top of the absorption chamber, separated 205 mm from the bottom surface. The diluted solution mass flow rate was modified between 0.04 and 0.08 kg/s and the solution inlet temperature between 24.5 and 29.7 °C. The influence of these variables on the absorption ratio, mass transfer coefficient, outlet subcooling and approach to equilibrium factor is analysed in the present paper. A linear relation between the inlet subcooling and the absorption ratio is observed. The approach to equilibrium factor for the conditions essayed is always between 0.81 and 0.89. Mass transfer coefficients and correlations for the approach to equilibrium factor and the Sherwood number are obtained. Results are compared with other ones reported in the literature.
AB - This paper presents the experimental evaluation of the adiabatic absorption of ammonia vapour into ammonia-lithium nitrate solution using a flat fan nozzle and an upstream single-pass subcooler. Data are representative of the working conditions of adiabatic absorbers in absorption chillers. The nozzle was located at the top of the absorption chamber, separated 205 mm from the bottom surface. The diluted solution mass flow rate was modified between 0.04 and 0.08 kg/s and the solution inlet temperature between 24.5 and 29.7 °C. The influence of these variables on the absorption ratio, mass transfer coefficient, outlet subcooling and approach to equilibrium factor is analysed in the present paper. A linear relation between the inlet subcooling and the absorption ratio is observed. The approach to equilibrium factor for the conditions essayed is always between 0.81 and 0.89. Mass transfer coefficients and correlations for the approach to equilibrium factor and the Sherwood number are obtained. Results are compared with other ones reported in the literature.
KW - Adiabatic absorption
KW - Ammonia-lithium nitrate solution
KW - Atomization
KW - Flat fan nozzle
UR - http://www.scopus.com/inward/record.url?scp=80052037323&partnerID=8YFLogxK
U2 - 10.1016/j.applthermaleng.2011.07.019
DO - 10.1016/j.applthermaleng.2011.07.019
M3 - Artículo
AN - SCOPUS:80052037323
SN - 1359-4311
VL - 31
SP - 3569
EP - 3579
JO - Applied Thermal Engineering
JF - Applied Thermal Engineering
IS - 16
ER -