Analysis of Feasibility of Peak Cooling Device Used with Direct Air Cooling Unit in Power Plant

DOI

10.2991/mseee-17.2017.52How to use a DOI?

Keywords

Direct air cooling unit, Evaporative condenser, Peak cooling device, Back pressure, Ash deposition.

Abstract

In order to reduce the back pressure of direct air cooling unit and increase power output of steam turbine in summer, the cold end system of a power plant is optimized through adding evaporative condenser as peak cooling device. Through experiments, this artical compares the effect on back pressure in the case of inputting the peak cooling device and cutting off peak cooling device with different load and different temperature in summer, also the effect of ash deposition on exhaust pressure is studied. The results show that the unit in different load of 500WM, 400WM, 380WM, 300WM and different temperature of 29 ,33 ,30 ,27 respectively, when putting into the peak cooling device, back pressure reduces 22kPa,13.1kPa,10.8kPa ,6.7kPa respectively; when cutting off the peak cooling device, the back pressure increases 27kPa, 14kPa, 11.4kPa and 5.4kPa respectively. The ash deposition can increase the back pressure. The back pressure has been reduced about 9kPa after cleaning ash deposition when cutting off the peak cooling device.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Xing Cao
AU  - Jinfeng Zhao
AU  - Yan Jiang
AU  - Yingai Jin
PY  - 2017/08
DA  - 2017/08
TI  - Analysis of Feasibility of Peak Cooling Device Used with Direct Air Cooling Unit in Power Plant
BT  - Proceedings of the 2017 International Conference on Material Science, Energy and Environmental Engineering (MSEEE 2017)
PB  - Atlantis Press
SP  - 281
EP  - 286
SN  - 2352-5401
UR  - https://doi.org/10.2991/mseee-17.2017.52
DO  - 10.2991/mseee-17.2017.52
ID  - Cao2017/08
ER  -