Buscar
Mostrando ítems 1-10 de 200
A predictive model for confined and unconfined nucleate boiling heat transfer coefficient
(2017-01-01)
The aim of this study is to investigate the influences of different parameters on the boiling phenomenon. In this paper, a new correlation to predict the pool boiling heat transfer coefficient is presented. The developed ...
An analysis of the effects of nanoparticles deposition on characteristics of the heating surface and ON pool boiling of water
(2017-03-01)
Nanofluid pool boiling can modify the morphology of the heating surface and the physical properties of the base fluids, interfering directly on the vapor bubbles dynamics and on the heat transfer mechanisms. This paper ...
Pool boiling performance of HFE-7100 on hierarchically structured surfaces
(2021-12-01)
The evolution of the processes for modifying/manufacturing surfaces has facilitated the advancement in pool boiling research with surfaces capable of increasing the heat transfer coefficient (HTC) and the critical heat ...
A Method for Measuring Contact Angle and the Influence of Surface-Fluid Parameters on the Boiling Heat Transfer Performance
(Asme, 2020-09-01)
An experimental apparatus and a computational routine were developed and implemented in order to obtain the sessile drop images and the contact angle measurement for different fluids and surface conditions. Moreover, ...
Flow boiling heat transfer of R134a and R245fa in a 2.3 mm tube
(PERGAMON-ELSEVIER SCIENCE LTD, 2010)
This paper presents new experimental flow boiling heat transfer results in micro-scale tubes. The experimental data were obtained in a horizontal 2.3 mm I.D stainless steel tube with heating length of 464 mm, R134a and ...
Evaluation of the heat transfer enhancement during pool boiling using low concentrations of Al2O3-water based nanofluid
(2017-01-01)
This study presents experimental results for the heat transfer coefficient during pool boiling of DI water and Al2O3-water based nanofluid at saturation conditions. Based on these data, an analysis of the heat transfer ...
Influence of coated surfaces and gap size on boiling heat transfer of deionized water
(2020-03-01)
Nanocoating techniques have been used to increase the heat transfer coefficient by changing the surface morphology, which could potentially increase the heat transfer in pool boiling systems. The present study aims to ...
A predictive model for boiling heat transfer coefficient of dielectric fluids on metal foams
(2020-01-01)
Pool boiling is a suitable technique for direct immersion cooling in electronic devices coupled with dielectric fluids. However, these fluids have relatively poor thermophysical properties in contrast to water, and extremely ...
Effect of copper foam thickness on pool boiling heat transfer of HFE-7100
(2020-05-01)
Pool boiling is a low-cost technique for cooling electronic devices; HFE-7100 is a dielectric fluid with advantageous properties for such application but its high wettability can cause temperature overshoot in the system. ...