کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
660482 1458116 2010 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Boiling heat transfer and pressure drop of ammonia-lithium nitrate solution in a plate generator
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Boiling heat transfer and pressure drop of ammonia-lithium nitrate solution in a plate generator
چکیده انگلیسی

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.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 53, Issues 21–22, October 2010, Pages 4768–4779
نویسندگان
, , , ,