What are passive methods of Heat transfer enhancement?
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Passive methods of heat transfer enhancement include the use of inserts like twisted tapes, conical strips, baffles, and winglets, along with porous materials, coil/helical/spiral tubes, rough surfaces (corrugated/ribbed surfaces), extended surfaces (fins), and nanofluids (mono and hybrid nanofluid) . These methods do not require external power input and are cost-effective, making them attractive for improving thermal efficiency in systems without added energy consumption . Twisted tape inserts are particularly effective in enhancing heat transfer properties without compromising system performance . Passive techniques aim to increase fluid residence time by inducing swirling motion, reducing thermal resistance in both laminar and turbulent flows . Additionally, combining cylindrical obstacles with flexible beams can further enhance heat transfer performance in microchannels through control mechanisms that optimize heat flux and pressure loss .
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| Papers (4) | Insight |
|---|---|
| Passive methods of heat transfer enhancement include utilizing a control system with a cylindrical obstacle and flexible beam to optimize heat transfer performance in a microchannel. | |
| Passive methods include inducing swirling motion and disturbing flow fields near tube walls to enhance heat transfer coefficients in heat exchanger tubes under laminar and turbulent flow conditions. | |
2 Citations | Passive methods of heat transfer enhancement include inserts (twisted tapes, conical strips, baffles, winglets), extended surfaces (fins), porous materials, coil/helical/spiral tubes, rough surfaces, and nanofluids (mono and hybrid). |
| Passive methods of heat transfer enhancement in shell and tube heat exchangers include air injection, nanofluids, and compound methods, offering benefits like lower operating costs and no external power requirements. |
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