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首页> 外文期刊>Journal of Engineering for Gas Turbines and Power >On Thermal Performance of Seawater Cooling Towers
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On Thermal Performance of Seawater Cooling Towers

机译：海水冷却塔的热性能

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摘要

Seawater cooling towers have been used since the 1970s in power generation and other industries, so as to reduce the consumption of freshwater. The salts in seawater are known to create a number of operational problems, including salt deposition, packing blockage, corrosion, and certain environmental impacts from salt drift and blowdown return. In addition, the salinity of seawater affects the thermophysical properties that govern the thermal performance of cooling towers, including vapor pressure, density, specific heat, viscosity, thermal conductivity, and surface tension. In this paper, the thermal performance of seawater cooling towers is investigated using a detailed model of a counterflow wet cooling tower. The model takes into consideration the coupled heat and mass transfer processes and does not make any of the conventional Merkel approximations. In addition, the model incorporates the most up-to-date seawater properties in the literature. The model governing equations are solved numerically, and its validity is checked against the available data in the literature. Based on the results of the model, a correction factor that characterizes the degradation of the cooling tower effectiveness as a function of seawater salinity and temperature approach is presented for performance evaluation purposes.
机译：自1970年代以来，海水冷却塔已用于发电和其他行业，以减少淡水的消耗。已知海水中的盐会产生许多操作问题，包括盐沉积，填料堵塞，腐蚀以及盐漂移和排污返回所造成的某些环境影响。此外，海水的盐度会影响控制冷却塔热性能的热物理性质，包括蒸汽压，密度，比热，粘度，导热系数和表面张力。在本文中，使用逆流湿式冷却塔的详细模型研究了海水冷却塔的热性能。该模型考虑了传热和传质的耦合过程，没有进行任何常规的默克尔近似。此外，该模型还结合了文献中最新的海水属性。对模型控制方程进行数值求解，并根据文献中的可用数据检查其有效性。基于模型的结果，出于性能评估的目的，提出了一个校正因子，该校正因子描述了冷却塔效率随海水盐度和温度变化而变化的特征。

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    Mostafa H. Sharqawy; John H. Lienhard V; Syed M. Zubair;

  • 作者单位

    Department of Mechanical Engineering,Massachusetts Institute of Technology,Cambridge, MA 02139-4307;

    Department of Mechanical Engineering,Massachusetts Institute of Technology,Cambridge, MA 02139-4307;

    Department of Mechanical Engineering,King Fahd University of Petroleum and Minerals,Dhahran 31261, Saudi Arabia;

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