... and may cause a serious damage to the microchannel. Consequently, the study and prediction of this phenomenon is an essential objective for flow boiling in microchannels. The aim of this work is to develop an analytical model to predict the critical heat flux (CHF) based on the prediction of liquid film...

... of CHF the wall superheat is smaller than 10 K. Above the value of 95 kW/m 2 , a small increase in the heat flux causes a drastic increase of the wall superheating, which characterizes the onset of CHF. Single phase heat transfer comparison for 1 and 2.2 mm tube Single-phase heat transfer...

...Tailian Chen; Suresh V. Garimella The cooling capacity of two-phase transport in microchannels is limited by the occurrence of critical heat flux (CHF). Due to the nature of the phenomenon, it is challenging to obtain reliable CHF data without causing damage to the device under test. In this work...

...Satish G. Kandlikar Accurate prediction of critical heat flux (CHF) in microchannels and minichannels is of great interest in estimating the safe operational limits of cooling systems employing flow boiling. Scale analysis is applied to identify the relevant forces leading to the CHF condition...

... s to 303 kg ∕ m 2 s , and an effective heat flux up to 444 W ∕ cm 2 . The annular flow pattern revealed during flow visualization and the high exit qualities at CHF conditions suggest dryout to be the CHF mechanism. An analysis, based on the experimental results and known CHF characteristics...

.... It was found that structured surfaces formed inside channel walls can assist mitigating the rapid bubble growth instability , which dominates many systems utilizing flow boiling in microchannels. This, in turn, delayed the parallel channel instability and the critical heat flux (CHF) condition. Experiments...

... studied. The p H value of the nanosuspensions is important from the point of view that it determines the stability of the particles and their mutual interactions toward the suspended heated wire. When there is no particle deposition on the wire, the nanofluid increases critical heat flux (CHF) by about 50...

...A. P. Roday; T. Borca-Tasçiuc; M. K. Jensen The critical heat flux (CHF) condition needs to be well understood for designing miniature devices involving two-phase flow. Experiments were performed to determine the CHF condition for a single stainless steel tube having an inside diameter of 0.427 mm...

...Chen Li; G. P. Peterson; Yaxiong Wang Presented here is the first of a two-part investigation designed to systematically identify and investigate the parameters affecting the evaporation/boiling and critical heat flux (CHF) from thin capillary wicking structures. The evaporation/boiling heat...

... results were compared with those on the common metal surface. In particular, the quantificational effects of the flow conditions, heating conditions, and the coating methods on the critical heat flux (CHF) were systemically investigated. The experimental data showed that the nucleate boiling heat transfer...

...Yuichi Mitsutake; Masanori Monde An ultra high critical heat flux (CHF) was attempted using a highly subcooled liquid jet impinging on a small rectangular heated surface of length 5 ∼ 10 mm and width 4 mm. Experiments were carried out at jet velocities of 5 ∼ 60 m / s , a jet temperature of 20°C...