Pool Boiling Heat Transfer in Saturated R407C Using Reentrant Cavity Surfaces

Shete, Umakant N.; Kumar, Ravi; Chandra, Ramesh

doi:10.1080/01457632.2023.2185489

Cited by 1 publication

(1 citation statement)

References 23 publications

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“…Shete et al [ 47 ] performed an experimental work to evaluate the nucleate boiling heat-transfer ability of reentrant cavity tubes used in R407C pool boiling at saturation temperature values of 7 °C and 10 °C and heat fluxes from 10.7 kW/m 2 to 79.7 kW/m 2 . The boiling surface reentrant cavities provided a lower wall superheat than that achieved with a plain boiling surface.…”

Section: Surface Modificationmentioning

confidence: 99%

An Overview of Innovative Surface-Modification Routes for Pool Boiling Enhancement

Pereira,

Souza,

Moreira

et al. 2024

Micromachines

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This overview intends to provide a comprehensive assessment of the novel fluids and the current techniques for surface modification for pool boiling enhancement. The surface modification at macro-, micro-, and nanoscales is assessed concerning the underlying fluid routing and capability to eliminate the incipient boiling hysteresis and ameliorate the pool boiling heat-transfer ability, particularly when employed together with self-rewetting fluids and nanofluids with enriched thermophysical properties. Considering the nanofluids, it is viable to take the profit of their high thermal conductivity and their specific heat simultaneously and to produce a film of deposited nanoparticles onto the heating surface, which possesses enhanced surface roughness and an increased density of nucleation sites. Whilst the diverse improvement scales are found to achieve distinct levels of success regarding the nucleate boiling heat-transfer capability enhancement, it is also shown that the micro–nanoscale boiling surface features are susceptible to blockage, leading to the degradation of the improvement with time. Furthermore, topics relating to the heat transfer thermal behavior, ease of manufacture, cost-effectiveness, reliability, and durability are reviewed whenever available and challenges and recommendations for further research are highlighted.

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Section: Surface Modificationmentioning

confidence: 99%