火电厂直接空冷技术应用与分析

Application and Analysis of Direct Air Cooling Technology in Thermal Power Plants

摘要: 火力发电厂直接空冷机组作为一种新的节水途径，在我国富煤贫水地区得到广泛推广。本文介绍了直接空冷技术的发展现状、原理及特点、直接空冷技术所凸显的问题，并对直接空冷技术的发展方向做出展望。直接空冷技术常见问题主要包括凝汽器表面积灰、热风再循环、凝汽器防冻度夏、风机运行和真空泄漏。文中阐述了这些问题产生的原因及预防措施，针对问题研究方法做了概括性总结。

Abstract: Thermal power direct air cooling unit as a new water-saving way, which has been widely promoted in coal-rich and water-poor regions in China. This article describes the direct air cooling technology development status, principles and characteristics, the problems of direct air cooling technology highlights and development direction of direct air cooling technology to make predictions. Common problems of direct air cooling technology include dust accumulation on condenser, hot air recirculation, anti-freezing estivate of condenser, fan running and vacuum leak. This paper describes the causes and preventive measures of these problems and generally summaries the research methods.