DIRECT-CONTACT HEAT TRANSFER BETWEEN A RISING DISPERSED PHASE IN A COUNTERFLOW STREAM
作者:
Herchang Ay,
RichardR. Johnson,
期刊:
Numerical Heat Transfer, Part A: Applications
(Taylor Available online 1994)
卷期:
Volume 26,
issue 6
页码: 667-682
ISSN:1040-7782
年代: 1994
DOI:10.1080/10407789408956016
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
A numerical model of a direct-contact evaporator is developed, which is used to calculate performance information about direct-contact heat transfer between a rising dispersed refrigerant and a counterflow continuous fluid. Results are compared with the existing experimental data. The numerical scheme involves slicing the column of the evaporator into a finite number of horizontal slices and applying continuity, population, and energy balances to each slice. Temperature and holdup ratio distributions through the evaporator are obtained for the operation of a 0.1-m-diameter column, using n-butane as the dispersed refrigerant and distilled water as the continuous fluid. Results are given for a range of values of the initial drop diameter, mass flow rate of the dispersed fluid, and mass flow rate of the continuous fluid.
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