Heat transfer characteristics and flow characteristics around vertical heated flat plate in pressurized fluidized bed with DEM

2017 ◽  
Vol 2017.55 (0) ◽  
pp. K0610
Author(s):  
Yuta HAMASAKI ◽  
Yasuo KATOH ◽  
Hirosi KATSURAYAMA
Keyword(s):  
Heat Transfer ◽  
Flat Plate ◽  
Fluidized Bed ◽  
Flow Characteristics ◽  
Heat Transfer Characteristics ◽  
Transfer Characteristics

scholarly journals Heat transfer and flow region characteristics study in a non-annular channel between rotor and stator

2012 ◽  
Vol 16 (2) ◽  
pp. 593-603 ◽  
Author(s):  
M. Nili-Ahmadabadi ◽  
H. Karrabi
Keyword(s):  
Heat Transfer ◽  
Reynolds Number ◽  
Flow Characteristics ◽  
Annular Channel ◽  
Flow Region ◽  
Air Gap ◽  
Heat Transfer Characteristics ◽  
Transfer Characteristics ◽  
Flow And Heat Transfer ◽  
Slip Ring

This paper will present the results of the experimental investigation of heat transfer in a non-annular channel between rotor and stator similar to a real generator. Numerous experiments and numerical studies have examined flow and heat transfer characteristics of a fluid in an annulus with a rotating inner cylinder. In the current study, turbulent flow region and heat transfer characteristics have been studied in the air gap between the rotor and stator of a generator. The test rig has been built in a way which shows a very good agreement with the geometry of a real generator. The boundary condition supplies a non-homogenous heat flux through the passing air channel. The experimental devices and data acquisition method are carefully described in the paper. Surface-mounted thermocouples are located on the both stator and rotor surfaces and one slip ring transfers the collected temperature from rotor to the instrument display. The rotational speed of rotor is fixed at three under: 300rpm, 900 rpm and 1500 rpm. Based on these speeds and hydraulic diameter of the air gap, the Reynolds number has been considered in the range: 4000<Rez<30000. Heat transfer and pressure drop coefficients are deduced from the obtained data based on a theoretical investigation and are expressed as a formula containing effective Reynolds number. To confirm the results, a comparison is presented with Gazley?s (1985) data report. The presented method and established correlations can be applied to other electric machines having similar heat flow characteristics.

Heat transfer characteristics in a small-scale fluidized bed boiler

1996 ◽  
Vol 20 (6) ◽  
pp. 521-530 ◽  
Author(s):  
S. Tia ◽  
S. Suwanayuen ◽  
C. Tangsatitkulchai ◽  
C. Phromvichit ◽  
W. Nimipal
Keyword(s):  
Heat Transfer ◽  
Fluidized Bed ◽  
Small Scale ◽  
Heat Transfer Characteristics ◽  
Transfer Characteristics
Sign in / Sign up

Export Citation Format

Share Document