Open AccessBack pressure optimization of direct air-cooled condenser considering anti-freezing and low-load operation
Author(s) -
Pengyuan Feng,
Zhiling Luo
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/569/3/032029
Subject(s) - condenser (optics) , cooling load , environmental science , surface condenser , back pressure , automotive engineering , nuclear engineering , engineering , mechanical engineering , steam turbine , superheated steam , air conditioning , light source , physics , optics
Direct air-cooled condensers are widely applied in northwest China because of water-saving. In order to improve the economical operation of the direct air-cooled condenser, based on the mechanism model, this paper calculates the optimal back pressure considering anti-freezing and low-load operation with considering the switching state of the exhaust steam isolation valves, and ensuring the minimum exhaust steam. The influences of ambient temperature and load ratio on optimal back pressure and energy saving are studied, which provide guidance for cold-end optimization and economic operation of direct air cooled condensers.