• HOME • BOILERS • COAL • GAS • RENEWABLES • NUCLEAR • ONSITE POWER • O&M • EMISSIONS • BUSINESS • WATER TREATMENT • NEW PROJECTS ◦ ABOUT US ◦ ADVERTISE ◦ BLOGS ◦ BUYER'S GUIDE ◦ CLASSIFIED ADS ◦ CONTACT US ◦ CURRENT ISSUE ◦ EVENTS ◦ MAGAZINE ◦ MOBILE ◦ NEWSLETTERS ◦ PAST ISSUES ◦ POWER GENERATION COMPANY NEWS ◦ PRODUCT SHOWCASE ◦ SPONSOR VIDEO CHANNEL ◦ SUBMIT AN ARTICLE ◦ SUBSCRIBE ◦ TOPIC INDEX ◦ WEBCASTS ◦ WHITE PAPERS ◦ BOILER CONTROL SYSTEMS ◦ BURNER & COMBUSTION SYSTEMS ◦ GAS ◦ POLICY & REGULATION ◦ STEAM ◦ UPGRADES ◦ COAL RETROFITS & UPGRADES ◦ COAL NEW PROJECTS ◦ COAL O&M ◦ COAL EMISSIONS CONTROL ◦ COAL EQUIPMENT ◦ CLEAN COAL TECHNOLOGIES ◦ GAS RETROFITS & UPGRADES ◦ GAS NEW PROJECTS ◦ COMBINED CYCLE ◦ GAS O&M ◦ GAS EMISSIONS CONTROL ◦ GAS EQUIPMENT ◦ WIND ◦ SOLAR ◦ HYDROELECTRIC ◦ BIOMASS ◦ GEOTHERMAL ◦ MARINE ◦ REACTORS ◦ RETROFITS & UPGRADES ◦ WASTE MGMT. & DECOMMISSIONING ◦ NUCLEAR O&M ◦ NUCLEAR EQUIPMENT ◦ NPI LATEST ISSUE ◦ DIESEL & GAS ENGINES ◦ SOLAR ◦ COGENERATION ◦ WIND ◦ POLICY & REGULATION ◦ PLANT AUTOMATION ◦ PLANT OPTIMIZATION ◦ SAFETY & PROTECTION ◦ INSTRUMENTATION & CONTROLS ◦ TESTING ◦ PUMPS & VALVES ◦ O&M RETROFITS & UPGRADES ◦ AIR POLLUTION CONTROL EQUIP. & SERVICES ◦ DIAGNOSTICS & TESTING ◦ WATER TREATMENT EQUIPMENT & SERVICES ◦ ENERGY EFFICIENCIES ◦ EMISSIONS REGULATION ◦ FINANCIAL ◦ ENVIRONMENTAL ◦ BUSINESS POLICY ◦ M&A ◦ CONTRACTS & PROJECTS ◦ PERSONNEL-STAFFING ◦ PROJECT MANAGEMENT ◦ BUSINESS REGULATION ◦ COOLING WATER TECHNOLOGIES ◦ POLICY & REGULATION ◦ WATER TREATMENT ◦ WATER USAGE ◦ COAL ◦ GAS ◦ RENEWABLES ◦ NUCLEAR ◦ EMISSIONS ◦ BUSINESS POWER ENGINEERING Gas Turbine Combined Cycle Fast Start: The Physics Behind the Concept 06/12/2013 By S. C. Gülen, Bechtel, Principal Engineer Nowadays all major gas turbine OEMs promote their products with an emphasis on "flexibility" in addition to output and efficiency. The most advertised flexibility feature is the fast start capability of advanced F, G or H class machines in simple and combined cycle modes. Alas, modern gas turbine based combined cycle (GTCC) systems comprise steel behemoths weighing tens of thousands of pounds and operate at extremely high pressures and temperatures while connected to each other via a maze of pipes and valves. This complex architecture presents formidable challenges to designers and operators alike to handle major operational transients with large flow, pressure and temperature (FPT) gradients without adverse impact on reliability, availability and maintainability (RAM). This is primarily achieved by advanced control schemes incorporating model based controls (MBC), design features such as terminal attemperators and cascaded steam bypass as well as material selection. As a result, in terms of dynamic response to transient events, the difference between a modern GTCC and its forerunners is as pronounced as that between cars with carbureted vis-à-vis fuel-injected engines. The goal of this article is to provide the reader with relevant and easy-to-use technical information (in the form of simple charts, basic equations and representative physical Home More Boiler Industry News Gas Turbine Combined Cycle Fast Start: The Physics Behind the Concept This site is best viewed with Internet Explorer 10, Firefox or Google Chrome. Please consider upgrading. × Page 1 of 18 Gas Turbine Combined Cycle Fast Start: The Physics Behind the Concept - Power En... 12/16/2014 http://www.power-eng.com/articles/print/volume-117/issue-6/features/gas-turbine-co...
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•HOME
•BOILERS
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•RENEWABLES
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•O&M
•EMISSIONS
•BUSINESS
•WATER TREATMENT
•NEW PROJECTS
◦ ABOUT US
◦ ADVERTISE
◦ BLOGS
◦ BUYER'S GUIDE
◦ CLASSIFIED ADS
◦ CONTACT US
◦ CURRENT ISSUE
◦ EVENTS
◦ MAGAZINE
◦ MOBILE
◦ NEWSLETTERS
◦ PAST ISSUES
◦ POWER GENERATION COMPANY NEWS
◦ PRODUCT SHOWCASE
◦ SPONSOR VIDEO CHANNEL
◦ SUBMIT AN ARTICLE
◦ SUBSCRIBE
◦ TOPIC INDEX
◦ WEBCASTS
◦ WHITE PAPERS
◦ BOILER CONTROL SYSTEMS
◦ BURNER & COMBUSTION SYSTEMS
◦ GAS
◦ POLICY & REGULATION
◦ STEAM
◦ UPGRADES
◦ COAL RETROFITS & UPGRADES
◦ COAL NEW PROJECTS
◦ COAL O&M
◦ COAL EMISSIONS CONTROL
◦ COAL EQUIPMENT
◦ CLEAN COAL TECHNOLOGIES
◦ GAS RETROFITS & UPGRADES
◦ GAS NEW PROJECTS
◦ COMBINED CYCLE
◦ GAS O&M
◦ GAS EMISSIONS CONTROL
◦ GAS EQUIPMENT
◦ WIND
◦ SOLAR
◦ HYDROELECTRIC
◦ BIOMASS
◦ GEOTHERMAL
◦ MARINE
◦ REACTORS
◦ RETROFITS & UPGRADES
◦ WASTE MGMT. & DECOMMISSIONING
◦ NUCLEAR O&M
◦ NUCLEAR EQUIPMENT
◦ NPI LATEST ISSUE
◦ DIESEL & GAS ENGINES
◦ SOLAR
◦ COGENERATION
◦ WIND
◦ POLICY & REGULATION
◦ PLANT AUTOMATION
◦ PLANT OPTIMIZATION
◦ SAFETY & PROTECTION
◦ INSTRUMENTATION & CONTROLS
◦ TESTING
◦ PUMPS & VALVES
◦ O&M RETROFITS & UPGRADES
◦ AIR POLLUTION CONTROL EQUIP. & SERVICES
◦ DIAGNOSTICS & TESTING
◦ WATER TREATMENT EQUIPMENT & SERVICES
◦ ENERGY EFFICIENCIES
◦ EMISSIONS REGULATION
◦ FINANCIAL
◦ ENVIRONMENTAL
◦ BUSINESS POLICY
◦ M&A
◦ CONTRACTS & PROJECTS
◦ PERSONNEL-STAFFING
◦ PROJECT MANAGEMENT
◦ BUSINESS REGULATION
◦ COOLING WATER TECHNOLOGIES
◦ POLICY & REGULATION
◦ WATER TREATMENT
◦ WATER USAGE
◦ COAL
◦ GAS
◦ RENEWABLES
◦ NUCLEAR
◦ EMISSIONS
◦ BUSINESS
POWER ENGINEERING
Gas Turbine Combined Cycle Fast Start: The Physics Behind the Concept
06/12/2013
By S. C. Gülen, Bechtel, Principal Engineer
Nowadays all major gas turbine OEMs promote their products with an emphasis on "flexibility"
in addition to output and efficiency. The most advertised flexibility feature is the fast start
capability of advanced F, G or H class machines in simple and combined cycle modes. Alas,
modern gas turbine based combined cycle (GTCC) systems comprise steel behemoths weighing
tens of thousands of pounds and operate at extremely high pressures and temperatures while
connected to each other via a maze of pipes and valves. This complex architecture presents
formidable challenges to designers and operators alike to handle major operational transients
with large flow, pressure and temperature (FPT) gradients without adverse impact on reliability,
availability and maintainability (RAM). This is primarily achieved by advanced control schemes
incorporating model based controls (MBC), design features such as terminal attemperators and
cascaded steam bypass as well as material selection. As a result, in terms of dynamic response
to transient events, the difference between a modern GTCC and its forerunners is as
pronounced as that between cars with carbureted vis-à-vis fuel-injected engines.
The goal of this article is to provide the reader with relevant and easy-to-use technical
information (in the form of simple charts, basic equations and representative physical
Home More Boiler Industry News Gas Turbine Combined Cycle Fast Start: The Physics Behind the Concept
This site is best viewed with Internet Explorer 10, Firefox or Google Chrome. Please consider upgrading. ×
Page 1 of 18Gas Turbine Combined Cycle Fast Start: The Physics Behind the Concept - Power En...
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