Investigating the efficiency of a steam-turbine heating plant with a back-pressure steam turbine and waste-heat recovery
A.M. Kler, E.L. Stepanova, and A.S. Maksimov
Melentiev Energy Systems Institute SB RAS, Irkutsk, Russia
E-mail: step@isem.irk.ru
Keywords: steam-turbine heating plant, mathematical modeling, optimization, efficiency of heat power equipment, steam turbine with back pressure, waste-heat recovery
Pages: 929–938
Abstract
The
article considers a promising steam-turbine heating plant, which includes a
steam turbine with back pressure and a steam boiler operating on natural gas,
with waste heat recovery. The mathematical model of а
steam-turbine heating plant has been developed to perform one design
calculation in the nominal mode and several verification calculations in
characteristic modes with different thermal loads. Optimization calculations of
the unit were carried out for two regions with different climatic conditions
and different fuel prices. The optimal design parameters of the equipment,
the parameters of the working fluid and coolants at all points of the
technological scheme, as well as fuel costs in each characteristic mode of
operation have been found by the criterion of the minimum price of electricity.
The considered steam-turbine heating plant provides a higher heat utilization
coefficient of the fuel than the traditional heating plant.
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