Contact heat and mass transfer in fluidized spherical packing

1973 ◽  
Vol 9 (1) ◽  
pp. 33-36
Author(s):  
N. I. Gel'perin ◽  
E. N. Bukharkin ◽  
V. Z. Grishko ◽  
M. I. Tsysin
Keyword(s):  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Contact Heat ◽  
Spherical Packing

Heat and Mass Transfer Associated With Condensation on a Moving Drop: Solutions for Intermediate Reynolds Numbers by a Boundary Layer Formulation

1985 ◽  
Vol 107 (2) ◽  
pp. 409-416 ◽  
Author(s):  
T. Sundararajan ◽  
P. S. Ayyaswamy
Keyword(s):  
Boundary Layer ◽  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Saturated Vapor ◽  
Time History ◽  
Local Heat ◽  
Surface Shear Stress ◽  
Contact Heat ◽  
Surface Shear ◽  
Wide Range

Condensation heat and mass transfer to a liquid drop moving in a mixture of saturated vapor and a noncondensable have been evaluated. The Reynolds number of the drop motion is 0(100). The quasi-steady, coupled, boundary layer equations for the flow field and the transport in the gaseous phase are simultaneously solved. The heat transport inside the drop is treated as a transient process. Results are presented for the heat and mass transport rates to the drop, the surface shear stress, the velocity profiles across the boundary layer, and the temperature-time history of the drop. The comparisons of results with experimental data, where available, show excellent agreement. Tables summarizing results appropriate to a wide range of condensation rates have been included. Local heat and mass transfer rates have also been presented. These features will make the paper useful to the designer of direct contact heat transfer equipment.

scholarly journals Simulation of contact heat and mass transfer in spray and bubbling apparatuses

2014 ◽  
Vol 76 ◽  
pp. 01020
Author(s):  
Michael Shilyaev ◽  
Helen Khromova ◽  
Alexander Tolstykh
Keyword(s):  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Contact Heat

scholarly journals A Cell Model to Describe and Optimize Heat and Mass Transfer in Contact Heat Exchangers

2011 ◽  
Vol 03 (02) ◽  
pp. 144-149 ◽  
Author(s):  
Vadim Mizonov ◽  
Nickolay Yelin ◽  
Piotr Yakimychev
Keyword(s):  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Heat Exchangers ◽  
Cell Model ◽  
Contact Heat ◽  
A Cell

Contact heat and mass transfer between a hot gas and a flowing liquid film

1984 ◽  
Vol 46 (3) ◽  
pp. 306-310 ◽  
Author(s):  
P. I. Geshev ◽  
O. P. Kovalev ◽  
O. Yu. Tsvelodub ◽  
Yu. V. Yakubovskii
Keyword(s):  
Mass Transfer ◽  
Liquid Film ◽  
Heat And Mass Transfer ◽  
Contact Heat ◽  
Flowing Liquid ◽  
Hot Gas

Fundamental Investigation of Direct Contact Heat Exchange for Application in HVAC Systems: A Case Study

2006 ◽  
Author(s):  
Joshua L. Hensley ◽  
James E. Bryan
Keyword(s):  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Transfer Process ◽  
Direct Contact ◽  
Mass Transfer Process ◽  
Humid Climate ◽  
Contact Heat ◽  
Numeric Model ◽  
Temperature And Humidity

An air conditioning system based on a direct contact heat and mass transfer process between water and air may offer benefits such as increased energy efficiency, temperature and humidity control, and improved indoor air quality. To investigate the feasibility of this type of technology, a numeric model is used to study the heat and mass transfer between a single droplet and moist air to gain fundamental insight into the heat and mass transfer process. Further, preliminary experiments are performed in a low speed temperature and humidity controlled wind tunnel to validate some of the models findings, e.g. the effect of droplet size on heat and mass transfer. A case study is presented to investigate how such a system would operate in a hot, dry climate as well as a hot and humid climate.

Paper 5: Direct Contact Heat and Mass Transfer Studies with Water Droplets in a Water Vapour–Air Mixture

1969 ◽  
Vol 184 (7) ◽  
pp. 1-5
Author(s):  
A. Porteous
Keyword(s):  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Water Vapour ◽  
Direct Contact ◽  
Droplet Diameter ◽  
Experimental Information ◽  
Water Droplets ◽  
Contact Heat ◽  
Process Industries ◽  
Mass Transfer Studies

The design of cooling and dehumidification towers is important for many process industries. This paper reports the results of a theoretical and experimental investigation on the direct contact heat and mass transfer characteristics of water droplets in counter-current flow through a water vapour-air mixture which simulates the stream to be dehumidified. The range of temperatures and dew points studied was 250–410°F and 85–112°F respectively. The effect of parameters such as contact path length, water droplet to water vapour-air mass ratios, droplet diameter, and entrainment are studied. The experimental information is then utilized in the design of a dehumidification tower.

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