Transient heat transfer behavior of water spray evaporative cooling on a stainless steel cylinder with structured surface for safety design application in high temperature scenario

2016 ◽  
Vol 53 (2) ◽  
pp. 363-375 ◽  
Author(s):  
Muhammad Aamir ◽  
Qiang Liao ◽  
Wang Hong ◽  
Zhu Xun ◽  
Sihong Song ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Stainless Steel ◽  
High Temperature ◽  
Evaporative Cooling ◽  
Transient Heat Transfer ◽  
Water Spray ◽  
Steel Cylinder ◽  
Safety Design ◽  
Transfer Behavior ◽  
Temperature Scenario

scholarly journals Experiment and numerical simulation on transient heat transfer from SiC foam to airflow in a high temperature tube

2018 ◽  
Vol 22 (Suppl. 2) ◽  
pp. 597-606 ◽  
Author(s):  
Xinlin Xia ◽  
Xue Chen ◽  
Xiaolei Li ◽  
Liu Bo ◽  
Yafen Han
Keyword(s):  
Heat Transfer ◽  
Experimental Data ◽  
Numerical Simulation ◽  
Steady State ◽  
High Temperature ◽  
Air Flow ◽  
Ceramic Foam ◽  
Transient Temperature ◽  
Transfer Behavior ◽  
Flow Velocities

In order to understand the high temperature heat transfer behavior of ceramic foam to air-flow, experiment and numerical simulation have been conducted for a tube fully filled with SiC foam under several air-flow velocities. The tested sample of SiC foam is characterized by a porosity of 0.88 and 10 pores per inch, which is heated to 1000?C before the air-flow passes through. The transient temperature variation is recorded and discussed for several inlet air-flow velocities ( 2.9 m/s, 4.3 m/s and 5.8 m/s). Then, a computational model for the transient process is developed to nu- merically investigate the coupled radiative and convective heat transfer, and compared with the experimental data. The results show that the heat transfer reaches steady-state quickly and the time needed is less than 80 second. The transient devia- tion between the predicted and experimental data is less than 25.0%. Besides, it is found that there exists an obvious temperature difference between the fluid and solid phases, the maximum difference occurs at the neighbor region of tube wall and decreases as the inlet velocity increases at the steady-state.

Significant Benefits of 3D Screen Printing for Manufacturing Micro-Channel Heat Exchangers

2018 ◽  
Vol 941 ◽  
pp. 2148-2153
Author(s):  
James Allen Zess ◽  
Martin Dressler
Keyword(s):  
Heat Transfer ◽  
Stainless Steel ◽  
High Temperature ◽  
Heat Exchangers ◽  
Chemical Etching ◽  
Screen Printing ◽  
Micro Channel ◽  
Micro Channels ◽  
Nickel Based Alloy ◽  
Manufacturing Methods

Micro-channel heat exchangers (MCHXs) manufactured by Zess & Lin Industries provide highly effective heat transfer and are used in a growing number of critical applications. MCHXs consist of stainless steel or high temperature Nickel-based alloy plates with micro channels that are chemically etched or machined into each plate. These traditional extractive manufacturing methods of chemical etching and machining used in manufacturing MCHX plates are difficult and costly as a large percentage of expensive alloy is lost during manufacturing.

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