【摘要】 对ＨＦＣ１３４ａ和ＣＦＣ１２水平管内流动沸腾换热进行了实验研究．在实验工况范围内，ＨＦＣ１３４ａ比ＣＦＣ１２的沸腾换热系数高３２％～４３％；流量对ＨＦＣ１３４ａ与ＣＦＣ１２水平管内流动沸腾换热系数之比的影响较大，干度和热流密度对其影响相对较小更多还原

【Abstract】 An experimental comparison is reported on flow boiling heat transfer of HFC 134a and CFC 12 inside a 10 mm ID horizontal smooth tube. The local heat transfer coefficient of HFC 134a is 32%～43% increase over CFC 12 in experiment range. The effects of flow rate on value of the comparison of local coefficients for HFC 134a and CFC 12 are higher than those of heat flux and quality.更多还原