The present study predicted and verified local frost thicknesses, blockage ratio(BR), heat transfer rates oflouvered fin-tube heat exchanger under both standard frosting condition(SFC)(ISO 5151, 1994) and highfrosting condition(HFC). Local frost properties were predicted by applying segment by segment method foreach segment with 10 fins. Reduction of air volume flow rate and locally different air velocity were obtainedby applying~(ΔP-V_a) curve and the maximum frost thickness. The heat transfer rate for each segment waspredicted by using ε-NTU method. The predicted maximum frost thicknesses for the SFC case showed thedeviation of average 4% from the measured values. The predicted total heat transfer rate agreed with themeasured data within 10%. Non-uniform profiles of local frost thickness of louvered fin0tube heat exchangerunder frosting condition were property predicted. Predicted BRs were agreed with the measured data within7%.
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