Pool boiling heat transfer on ultra-light porous metal foam surfaces

2013 ◽  
Author(s):  
Xianbing Ji ◽  
Qiang Xue ◽  
Jiliang Xu ◽  
Jia Xu
Keyword(s):  
Heat Transfer ◽  
Boiling Heat Transfer ◽  
Metal Foam ◽  
Pool Boiling ◽  
Porous Metal ◽  
Pool Boiling Heat Transfer

Pore-Scale Simulation on Pool Boiling Heat Transfer and Bubble Dynamics in Open-Cell Metal Foam by Lattice Boltzmann Method

2020 ◽  
Vol 143 (1) ◽  
Author(s):  
Jie Qin ◽  
Zhiguo Xu ◽  
Xiaofei Ma
Keyword(s):  
Heat Transfer ◽  
Lattice Boltzmann ◽  
Boiling Heat Transfer ◽  
Bubble Dynamics ◽  
Metal Foam ◽  
Pool Boiling ◽  
Open Cell ◽  
Pool Boiling Heat Transfer ◽  
Boltzmann Method ◽  
Foam Thickness

Abstract Based on the newly developed geometrical model of open-cell metal foam, pool boiling heat transfer in open-cell metal foam, considering thermal responses of foam skeletons, is investigated by the phase-change lattice Boltzmann method (LBM). Pool boiling patterns are obtained at different heat fluxes. The effects of pore density and foam thickness on bubble dynamics and pool boiling heat transfer are revealed. The results show that “bubble entrainment” promotes fluid mixing and bubble sliding inside metal foam. Based on force analysis, the sliding bubble is pinned on the heating surface and cannot lift off completely at high heat flux due to the increasing surface tension force. Pool boiling heat transfer coefficient decreases with increasing pore density and foam thickness due to high bubble escaping resistance.

Influence of oil on nucleate pool boiling heat transfer of refrigerant on metal foam covers

2011 ◽  
Vol 34 (2) ◽  
pp. 509-517 ◽  
Author(s):  
Yu Zhu ◽  
Haitao Hu ◽  
Guoliang Ding ◽  
Hao Peng ◽  
Xiangchao Huang ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Boiling Heat Transfer ◽  
Metal Foam ◽  
Pool Boiling ◽  
Nucleate Pool Boiling ◽  
Pool Boiling Heat Transfer

Experimental Study of Subcooled Pool Boiling Heat Transfer on Metal Foam

2011 ◽  
Author(s):  
Juan Shi ◽  
Anthony M. Jacobi ◽  
Zhenqian Chen
Keyword(s):  
Heat Transfer ◽  
Experimental Study ◽  
Thermal Performance ◽  
Boiling Heat Transfer ◽  
Metal Foam ◽  
Pool Boiling ◽  
Metal Foams ◽  
Working Fluid ◽  
Maximum Heat ◽  
Pool Boiling Heat Transfer

The present experimental study is focused on subcooled pool boiling heat transfer on aluminum metal foam at atmospheric pressure. Experiments are conducted with open-cell metal foam of different porosity and different thickness, using water as the working fluid. The surface superheat ranges up to 15 °C, with maximum heat flux of about 30 W/cm2. The thermal performance of pool boiling on metal foams is compared to that on a roughened copper surface of the same dimensions. The thickness and the geometry of metal foams significantly influence the pool boiling heat transfer coefficient. The effect of orientation on the thermal performance in metal foam is also studied. The surface temperature excursion at boiling incipience and small hysteresis is observed in the experiments. When the metal foam thickness is reduced, hysteresis becomes more significant.

Nucleate Pool Boiling Heat Transfer in Microgravity

1998 ◽  
Vol 29 (1-3) ◽  
pp. 196-207
Author(s):  
Haruhiko Ohta ◽  
Koichi Inoue ◽  
Suguru Yoshida ◽  
Tomoji S. Morita
Keyword(s):  
Heat Transfer ◽  
Boiling Heat Transfer ◽  
Pool Boiling ◽  
Nucleate Pool Boiling ◽  
Pool Boiling Heat Transfer
Sign in / Sign up

Export Citation Format

Share Document