scholarly journals Experimental Observation of the Dynamic Micro- and Macro-Layer During Pool Boiling

2008 ◽  
Author(s):  
Craig Gerardi ◽  
Jacopo Buongiorno ◽  
Lin-Wen Hu ◽  
Thomas McKrell
Keyword(s):  
Thin Films ◽  
Experimental Study ◽  
Experimental Observation ◽  
Bubble Growth ◽  
High Speed ◽  
Pool Boiling ◽  
Experimental Confirmation ◽  
Nucleate Pool Boiling ◽  
Heater Surface

This paper presents the results of an experimental study on nucleate pool boiling. Experiments were performed using vapor-deposited thin films which were electrically heated. High-speed infrared and visible cameras simultaneously observed bubble growth from the heater surface. Possible experimental confirmation of microlayer dynamics is presented.

Experimental study on bubble departure characteristics in subcooled nucleate pool boiling

2017 ◽  
Vol 89 ◽  
pp. 163-176 ◽  
Author(s):  
Parul Goel ◽  
Arun K. Nayak ◽  
Parimal P. Kulkarni ◽  
Jyeshtharaj B. Joshi
Keyword(s):  
Experimental Study ◽  
Pool Boiling ◽  
Nucleate Pool Boiling

Experimental Study of Enhanced Pool Boiling Heat Transfer Using Graphite Foam Inserts

2011 ◽  
Vol 312-315 ◽  
pp. 352-357 ◽  
Author(s):  
K.C. Leong ◽  
L.W. Jin ◽  
I. Pranoto ◽  
H.Y Li ◽  
J.C. Chai
Keyword(s):  
Heat Transfer ◽  
Experimental Study ◽  
Boiling Heat Transfer ◽  
High Speed ◽  
Bubble Formation ◽  
Pool Boiling ◽  
Heat Fluxes ◽  
Copper Block ◽  
Different Types ◽  
Graphite Foam

This paper presents the results of an experimental study of heat transfer in a pool boiling evaporator with porous insert. Different types of graphite foams were tested with the phase change coolant FC-72 in a designed thermosyphon. Comparisons between the graphite foams and a solid copper block show that the porous structure enhances pool boiling significantly. The boiling thermal resistance of the tested graphite foams was found to be about 2 times lower than that of the copper block. The bubble formation recorded by a high speed camera indicates that boiling from a graphite foam is more vigorous than from a copper block. The designed thermosyphon with graphite foam insert can remove heat fluxes of up to 112 W/cm2 with the maximum heater temperature maintained below 100°C.

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