Effects of High Pressure Heater Splitting to Heat Economy of Double Reheat Unit
- DOI
- 10.2991/ipemec-15.2015.71How to use a DOI?
- Keywords
- double reheat unit; thermal economy calculation; unit cycle thermal efficiency; high pressure heater splitting.
- Abstract
At present, mankind is faced with serious energy problems, as the energy-hungry, power energy saving is significant. Compared with the traditional single reheat unit, using secondary reheat to further improve the thermal efficiency of the unit, and meet the requirements of the unit low pressure cylinder exhaust steam eventually humidity. Double reheat power generation technology is the important technical direction to improve the efficiency of the power plant coal-fired generating units. In this paper, we researched the thermal economy calculation of double reheat units ,to single reheat unit economy calculation as the basis, adding the process of second reheat, calculated turbine internal work, boiler heat absorption and cycle thermal efficiency of double reheat units. Consider the case of the actual operation of the presence of high pressure splitting, according to the steam distribution unit matrix equation, calculated the steam distribution of different load after high pressure splitting, and calculated the corresponding cycle thermal efficiency. The results showed that in same conditions, double reheat cycle thermal efficiency was 2.26% higher than single reheat unit, after high pressure splitting, cycle thermal efficiency increased about 10%, and with load decreasing cycle thermal efficiency is declining, Effects of high pressure splitting is also reduced.
- Copyright
- © 2015, 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/).
Cite this article
TY - CONF AU - Silong Xu AU - Jianmeng Yang AU - Jian Li AU - Boshuo Sun PY - 2015/05 DA - 2015/05 TI - Effects of High Pressure Heater Splitting to Heat Economy of Double Reheat Unit BT - Proceedings of the 2015 International Power, Electronics and Materials Engineering Conference PB - Atlantis Press SP - 367 EP - 370 SN - 2352-5401 UR - https://doi.org/10.2991/ipemec-15.2015.71 DO - 10.2991/ipemec-15.2015.71 ID - Xu2015/05 ER -