Two categories of correction method for two-phase flow condensation heat transfer and pressure drop were compared for a distributed parameter model of a microchannel condenser with R134a as the refrigerant. The Cross-repeated-testing nonlinear correction method was demonstrated to be better than the conventional simple polynomial fitting correction. Using the former correction

the error of the estimation of heat transfer can be reduced by 64.5% and the mean square error was less than 3%. Similarly

the error of refrigerant side pressure drop decreased by 82.05% and the mean square error was controlled within 10%. Furthermore

this method not only proved the correctness and validity of the simulation model of a microchannel parallel-flow condenser

but also identified a way to accurate prediction of key parameters during heat transfer

including heat flux and pressure drop.