涡轮机
汽轮机
核工程
蒸汽发电站
闲置
套管
环境科学
火力发电站
机械工程
工程类
联合循环
电气工程
计算机科学
操作系统
作者
James Spelling,Markus Jöcker,Andrew J. Martin
出处
期刊:Journal of engineering for gas turbines and power
[ASME International]
日期:2011-11-04
卷期号:134 (1)
被引量:21
摘要
Steam turbines in solar thermal power plants experience a much greater number of starts than those operating in baseload plants. In order to preserve the lifetime of the turbine while still allowing fast starts, it is of great interest to find ways to maintain the turbine temperature during idle periods. A dynamic model of a solar steam turbine has been elaborated, simulating both the heat conduction within the body and the heat exchange with the gland steam, main steam and the environment, allowing prediction of the temperatures within the turbine during off-design operation and standby. The model has been validated against 96 h of measured data from the Andasol 1 power plant, giving an average error of 1.2% for key temperature measurements. The validated model was then used to evaluate a number of modifications that can be made to maintain the turbine temperature during idle periods. Heat blankets were shown to be the most effective measure for keeping the turbine casing warm, whereas increasing the gland steam temperature was most effective in maintaining the temperature of the rotor. By applying a combination of these measures the dispatchability of the turbine can be improved significantly: electrical output can be increased by up to 9.5% after a long cooldown and up to 9.8% after a short cooldown.
科研通智能强力驱动
Strongly Powered by AbleSci AI