【摘要】 为提高滨海电厂设计阶段温排水数值模拟的准确性，本文基于箱式模型提出了一种水面综合散热系数的实测方法，并在湄洲湾电厂附近海域进行了现场观测，结果表明：实测水面综合散热系数在不同潮型观测时间内波动剧烈，昼夜间变化幅度明显不同，昼间受太阳辐射影响波动较剧烈。同时基于箱式模型的模拟结果表明，相比选取经验常数，采用实测系数的模拟结果可以反映由于太阳辐射等外在因素所导致的温升变化，与实测温度变化过程更符合。本文提出的超温水体水面综合散热系数的实测方法，可提高温排水数值模拟中水面综合散热系数取值的准确性，对于科学合理地确定温排水影响范围具有重要意义。更多还原

【Abstract】 In the design phase of a coastal power plant, numerical simulation is usually used to predict the influence scope of thermal water discharge needing the realistic heat transfer coefficients. The coefficient was almost judged based on experience and lack of systematic research actually so far. To solve this problem, this paper analyzed the comprehensive heat dissipation of the Meizhou bay power plant, and proposed a method for measuring the coefficients. The measured data showed that heat transfer coefficients fluctuated dramatically during high and low tides, so the empirical constant was not completely reliable with deviation. Conversely, the model results could reflect the temperature rise change more accurately caused by external factors, which was more consistent with the measured. This simulation method increased the accuracy of the heat transfer coefficients, and it had an important progress in rationally determining the influence of thermal water drainage.更多还原