Heat transfer mode shift to adiabatic thermalization in near-critical carbon dioxide with flow boiling in a microchannel

A Parahovnik, U Manda, Y Peles - International Journal of Heat and Mass …, 2022 - Elsevier
Heat transfer via acoustic waves, known as adiabatic thermalization or the piston effect, was
previously studied in enclosures under microgravity and terrestrial conditions with carbon …

Bubble dynamics in a subcooled flow boiling of near-critical carbon dioxide

A Parahovnik, Y Peles - International Journal of Heat and Mass Transfer, 2022 - Elsevier
Bubbly flow patterns for subcooled flow boiling of carbon dioxide at high reduced pressures
were experimentally studied. Development of boiling patterns starting from scant nucleations …

Two-phase flow, pressure drop, and Joule-Thomson effect in a micro-orifice with trans critical carbon dioxide flow

A Parahovnik, P Ahmed, Y Peles - The Journal of Supercritical Fluids, 2022 - Elsevier
Two-phase flow, pressure drop, and Joule-Thomson coefficient (JT h) of sub-and super-
critical carbon dioxide expanding through a 81 µm orifice embedded inside a 300 µm …

Influence of interphase forces on onset of fully developed subcooled flow boiling at high pressure

Y Pan, Z Li, H Wang - International Journal of Heat and Mass Transfer, 2021 - Elsevier
Accurate prediction of the onset point of fully developed boiling (FDB) in subcooled flow
boiling is crucial for the design of industrial equipment. In this work, Eulerian− Eulerian two …

High pressure saturated flow boiling of CO2 at the micro scale

A Parahovnik, Y Peles - International Journal of Heat and Mass Transfer, 2022 - Elsevier
Saturated flow boiling heat transfer of carbon dioxide (CO 2) at the microscale was studied
with pressures ranging from 2.4 MPa to 6 MPa (ie, reduced pressure ranging from 0.3 to …

Laser-induced fluorescence thermometry of supercritical CO2 flows inside a micro-channel

S Park, A Parahovnik, Y Peles, SS Vasu - Optics Letters, 2021 - opg.optica.org
This work demonstrates a thermometric technique using laser-induced fluorescence (LIF) in
supercritical carbon dioxide flows in a micro-channel. Rhodamine 6G was used as a …

On the continuous nature of phase change in near-critical carbon dioxide

TA Whitaker, SR Rao - International Journal of Heat and Mass Transfer, 2024 - Elsevier
Unique boiling behavior at near-critical conditions can leverage the large heat transfer
coefficients associated with flow boiling while mitigating some of the disadvantages …

Heat Transfer of Supercritical CO2 Near the Critical Condition Inside a Microchannel

P Ahmed, A Parahovnik… - Heat Transfer …, 2023 - asmedigitalcollection.asme.org
Carbon dioxide (CO2) is increasingly being used as a highly efficient, environmentally
friendly and sustainable refrigerant/heat transfer fluid. Because of its high specific heat and …

Experimental investigation of boiling heat transfer coefficient in two-phase carbon dioxide in a microchannel with side-view schlieren flow visualization

TA Whitaker, SR Rao - 2023 22nd IEEE Intersociety …, 2023 - ieeexplore.ieee.org
Carbon dioxide in close vicinity to the critical point has recently drawn interest as a working
fluid for thermal management due to its favorable thermophysical properties, dielectric …

Critical Heat Flux Condition and Post-Critical Heat Flux Heat Transfer of Carbon Dioxide at High Reduced Pressures in a Microchannel

A Parahovnik, E White, Y Peles - ASME Journal of …, 2023 - asmedigitalcollection.asme.org
Flow boiling heat transfer around the critical heat flux (CHF) condition at high reduced
pressures of carbon dioxide in a 296-μm hydraulic diameter microchannel was …