Задачи проектирования систем парового охлаждения газовых турбин
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Дата
2014
ORCID
DOI
Науковий ступінь
Рівень дисертації
Шифр та назва спеціальності
Рада захисту
Установа захисту
Науковий керівник
Члени комітету
Видавець
НТУ "ХПИ"
Анотація
В статье проведен анализ возможности применения водяного пара в качестве охладителя в системах охлаждения газовых турбин как альтернатива воздушной системе охлаждения. Сформулированы преимущества и основные задачи проектирования систем парового охлаждения газовых турбин. На основе анализа табличных данных построены аппроксимирующие зависимости для плотности, удельной теплоемкости и других теплофизических свойств водяного пара. Справедливость зависимостей ограничена интервалом давлений и температур, которые возможны в системах охлаждения турбин. Выполнена оценка эффективности использования пара в качестве охладителя в системах охлаждения газовых турбин.
A cooling system is an important part of contemporary gas turbine. Its improvement and sophistication is an essential condition for the creation of a competitive turbine design. The possibility of the use of steam as the heat carrier for cooling systems of gas turbines, which is an alternative to air cooling system, has been analyzed. The advantages and disadvantages of the steam cooling structure of gas turbines have been discussed. The main problems are related to the selection of the turbine cascade for the steam extraction and the turbine cascade for the steam return, hydraulic design of a steam cooling network, assessment of steam losses in the turbine caused by its leakage in branched cooling systems, software development for the solution of acute problems. Using the table data we developed approximating equations for the density, specific heat capacity and other thermal-&-physical properties of the water steam for temperature and pressure ranges that can be used for turbine cooling systems. The estimation of the steam efficiency as a cooling agent for gas turbine cooling has been given.
A cooling system is an important part of contemporary gas turbine. Its improvement and sophistication is an essential condition for the creation of a competitive turbine design. The possibility of the use of steam as the heat carrier for cooling systems of gas turbines, which is an alternative to air cooling system, has been analyzed. The advantages and disadvantages of the steam cooling structure of gas turbines have been discussed. The main problems are related to the selection of the turbine cascade for the steam extraction and the turbine cascade for the steam return, hydraulic design of a steam cooling network, assessment of steam losses in the turbine caused by its leakage in branched cooling systems, software development for the solution of acute problems. Using the table data we developed approximating equations for the density, specific heat capacity and other thermal-&-physical properties of the water steam for temperature and pressure ranges that can be used for turbine cooling systems. The estimation of the steam efficiency as a cooling agent for gas turbine cooling has been given.
Опис
Ключові слова
парогазовая установка, коэффициент теплоотдачи, gas turbine, steam-gas plant, steam cooling system, heat emission coefficient
Бібліографічний опис
Тарасов А. И. Задачи проектирования систем парового охлаждения газовых турбин / А. И. Тарасов, О. А. Литвиненко, И. А. Михайлова // Вестник Нац. техн. ун-та "ХПИ" : сб. науч. тр. Темат. вып. : Энергетические и теплотехнические процессы и оборудование. – Харьков : НТУ "ХПИ". – 2014. – № 12 (1055). – С. 42-48.