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The heat transfer and pressure drop characteristics of R32 were experimentally investigated for flow boiling in a mini multichannel flat tube with 0° helix angle micro fins that are aligned with the flow direction. The micro-fin tube has an inner diameter of 1.7mm with thirteen 0.16mm high fins. The working conditions were mass fluxes of 100–400kgm−2s−1, heat fluxes of 10–40kWm−2 and saturation temperatures...
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