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The methods result in a finer, more homogeneous membrane microstructure and can be used to form membrane layers requiring high-temperature processing on supports with limited thermal stability.
However, optimizing ribs is more effective for improving local heat transfer.
Due to the advantages of saving space and reducing pressure loss, small rib angle is beneficial to improve the performance of wavy ribs as well.
Predicted results agree quantitatively and qualitatively with previous experimental results for membranes with semi-circular cross-sectioned ribs.
Here, an effective approach is proposed to inhibit the formation of ribs by introducing an additional compact layer (ACL).
It could be demonstrated that applying W-shaped ribs instead of V-shaped ribs has the advantage of an increased heat transfer enhancement, but is accompanied by a rise in pressure loss.
It is found that the crescent ribs evidently enhance local heat transfer on the endwall downstream the ribs by generating longitudinal vortices, which intensify flow mixing.
It is shown that the use of certain profiled ribs provides considerable heat transfer enhancements over conventional ribs with the same blockage ratio in the duct.
The clinician can use a rib belt to provide additional comfort to the patient with fractured ribs without apparent additional compromise to respiratory parameters.

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What is value of Al2O3 thermal conductivity at liquid phase?
5 answers
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What challenges are there in model predictive heat pump control?
5 answers
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Can MoS2 increase fouling when incorporated in UF membranes?
4 answers
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How to count thom chamber?
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What are the current trends in the use of polyethylene terephthalate (PET) in various industries?
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4 answers
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