TY - JOUR
T1 - Boiling heat transfer and pressure drop of ammonia-lithium nitrate solution in a plate generator
AU - Zacarías, A.
AU - Ventas, R.
AU - Venegas, M.
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 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 - 2010
Y1 - 2010
N2 - This paper presents the thermal and pressure-drop experimental evaluation of a fusion plate heat exchanger (PHE) during boiling conditions of a solution of lithium nitrate in ammonia. The data are representative of the working conditions of generators in single-effect absorption chillers. The solution flow rate and outlet temperature were modified in the ranges of 0.041-0.083. kg/s and 78-95°C, respectively. Correlations for single-phase-flow heat transfer are used to characterize the boiling heat transfer. The influences of the heat flux, mass flux and exit-vapour quality are analyzed. Boiling heat-transfer coefficients and correlations for the Nusselt number are obtained. Results are compared with Cooper's and Ayub's correlations for boiling heat transfer. Pressure drop in the solution side was also measured and one correlation was obtained to characterize the frictional pressure drop under boiling conditions.
AB - This paper presents the thermal and pressure-drop experimental evaluation of a fusion plate heat exchanger (PHE) during boiling conditions of a solution of lithium nitrate in ammonia. The data are representative of the working conditions of generators in single-effect absorption chillers. The solution flow rate and outlet temperature were modified in the ranges of 0.041-0.083. kg/s and 78-95°C, respectively. Correlations for single-phase-flow heat transfer are used to characterize the boiling heat transfer. The influences of the heat flux, mass flux and exit-vapour quality are analyzed. Boiling heat-transfer coefficients and correlations for the Nusselt number are obtained. Results are compared with Cooper's and Ayub's correlations for boiling heat transfer. Pressure drop in the solution side was also measured and one correlation was obtained to characterize the frictional pressure drop under boiling conditions.
KW - Ammonia-lithium nitrate solution
KW - Boiling heat transfer
KW - Fusion plate heat exchanger
KW - Plate generator
KW - Pressure drop
UR - http://www.scopus.com/inward/record.url?scp=77955518225&partnerID=8YFLogxK
U2 - 10.1016/j.ijheatmasstransfer.2010.06.015
DO - 10.1016/j.ijheatmasstransfer.2010.06.015
M3 - Artículo
AN - SCOPUS:77955518225
SN - 0017-9310
VL - 53
SP - 4768
EP - 4779
JO - International Journal of Heat and Mass Transfer
JF - International Journal of Heat and Mass Transfer
IS - 21-22
ER -