Open AccessThe blast air preheating of an power boiler CHP ZIGM
Author(s) -
С. К. Зиганшина,
А. А. Кудинов
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1652/1/012011
Subject(s) - boiler (water heating) , surface condenser , steam drum , nuclear engineering , steam electric power station , condenser (optics) , thermal power station , heat exchanger , environmental science , turbine , waste management , superheater , flash boiler , coolant , materials science , superheated steam , combined cycle , mechanical engineering , engineering , light source , physics , optics
To improve the efficiency of the steam-turbine thermal power plant by reducing heat loss in a cold source by regenerating part of the heat of condensation of steam exhaust in the turbine, it is proposed to preheat the boiler blast air in a heat exchanger with circulating water heated in a steam turbine condenser. Saving of heat energy in monetary terms due to the use of part of the heat of condensation of steam in the turbine during preheating of the blast air of the ener-gy boiler BKZ-420-140 NGM of the Samara Thermal Power Plant to 20 °C is 13.244 mln rub/year. The design of an air-preheating unit for preheating the blast air of the power boiler BKZ-420-140 NGM has been developed, in which the heating coolant is circulating water heated in a steam turbine condenser. Variant calculations were carried out, as a result of which the main thermal performance parameters of the installation were determined at different boiler loads and outdoor temperatures.