中国电机工程学报Issue(4)：898-905,8.DOI:10.13334/j.0258-8013.pcsee.2015.04.017
防风网对空冷岛换热性能影响的数值模拟
Numerical Simulation for the Effects of Windshield on Heat Transfer Performance of Air-cooled Island
陈海平 1仲雅娟 1付浩然 1孙见雨 1郑伟1
作者信息
- 1. 国家火力发电工程技术研究中心 华北电力大学，北京市昌平区 102206
- 折叠
摘要
Abstract
Taking one 2×300MW direct air-cooled units in domestic as an example, the influences of installing windshield down along air-cooled platform on the heat transfer performance of air-cooled island were numerically simulated using software FLUENT, and the variations of air flow field and temperature field near the air-cooled island after installing windshield were compared and analyzed respectively. The results show that the installation of windshield improves the air-cooled fan output in the condition of high wind speed, resists the process of hot air recirculation, and improves the heat transfer performance of the air-cooled island. Under different speed of the boiler side wind and the side-direction wind , the effect of different permeable rates and different heights of the windshield on heat transfer efficiency was further analyzed. The results show, the heat transfer efficiency of air-cooled island installed with windshield of which the permeable rate is 6% or 13% is generally lower than that when the permeable rate is 25% or 44%;With the increase of the windshield height, the heat transfer efficiency of air-cooled island increases first and then decreases, and the optimal structure of the windshield is that the permeable rate is 25% and the height is 12m. The research results provide some theoretical evidence for the optimization of the windshield of direct air-cooled units.关键词
防风网/空冷岛/换热性能/数值模拟Key words
windshield/air-cooled island/heat exchange efficiency/numerical simulation分类
能源科技引用本文复制引用
陈海平,仲雅娟,付浩然,孙见雨,郑伟..防风网对空冷岛换热性能影响的数值模拟[J].中国电机工程学报,2015,(4):898-905,8.
