Aviation Applications: Saving Fuel & Increasing EGT Margin
Power Generation Applications
Oil & Gas Applications
Downloadable Marketing Materials
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Gas Turbine Compressors consume approximately 60% of the overall cycle energy during operation. This cycle consumes very large quantities of air and although this air is filtered, small quantities of dust, aerosols and water pass through the filters and deposit on the blades. These deposits decrease the air flow of the compressor and the overall performance of the gas turbine. Compressor cleanliness can be maintained using a routine program of water washing. There are two water wash maneuvers performed on gas turbines: Off-Line and On Line. An Off-Line maneuver is conducted with the gas turbine in a cooled state using cranking speed, while an On Line maneuver is conducted with the machine at operating temperature and uses water only. Both Operations use highly atomized water spray patterns designed to completely enter the compressor core. The Off-Line cleans the entire core and recovers lost performance, while the On-Line cleans the early stages and maximizes the time period between needed Off-Line washing to provide peak availability.
The patented GTE high pressure compressor wash system will offer the Gas Turbine operator the following improvements while using the GTE online/offline compressor wash system:
Benefits / Demonstrated Improvement
• Availability: ~ 2 %
• Performance/Output: ~ 3 %
• Heat Rate: ~ 1 %
•
Payback: a few months
The GTE compressor wash system is proven on more than 800 stationary gas turbines most of which OEM makes, such as GE, Siemens, Rolls Royce, and others. The experience totals more than 20 million hours of gas turbine running time. |
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Aviation Applications: Saving Fuel & Increasing EGT Margin
Today the aviation industry is under environmental pressure, and many studies have been made regarding efficiency and discharges. A clean engine is shown to reduce fuel consumption up to 1% which will amount to 250 kg less fuel consumed for a jumbo jet on a long haul flight. With the reduced fuel consumption follows reduced carbon dioxide emissions; 3.1 kg of carbon dioxide is avoided for every kg of fuel saved. This is a significant contribution to the airlines’ environmental compliance program and operational costs while also extending engine maintenance intervals. Naturally, these benefits can also be applied for industrial, marine and offshore environments as well.
Saving fuel and carbon dioxide emissions is not the only benefit of a clean engine. Airline operators
appreciate the combustion gas temperature reduction with a clean engine. Typically, a 10 Celsius
reduced EGT is reported after engine washing. This substantially reduces gas path hot temperature
exposure and extends the engine maintenance intervals. Additionally, reduction in combustion
temperature reduces harmful nitrogen oxide emissions. GTE has established itself as a leader
in mobile aviation engine cleaning systems. The knowledge gained from this vast experience
base is the foundation for the expanding line of compressor cleaning systems in the industrial,
oil and gas, and power generation engines, as well as its continuing success in aviation.
Technology
GTE is has redefined gas turbine cleaning technology with new methods and are committed to continuous research and development. The development of the GTE high-pressure direct injection system has allowed engine cleaning to achieve a giant step forward in providing a cost-effective and environmentally-adapted method that gives substantially improved results. The washing is done with de-ionized water only and the need for hazardous chemicals has been eliminated. Previous washing technology was done by simply spraying water and chemicals through a hose directed towards the engine blades or using intrusive shepards hooks inserted behind the fan of an engine. These processes were time consuming, environmentally unfriendly, inefficient and unsafe.
The Gas Turbine Efficiency (GTE) wash cart that is built for Pratt and Whitney’s EcoPower™ service group is a self-contained, weather-protected mobile cart. All system functions are controlled from the operating panel on the cart. Equipment mobility and size allow for easy storage between cleaning use. Nozzles and nozzle manifolds are engine and aircraft specific. Maintenance personnel appreciate the easy functionality of the wash cart and the simple handling of the nozzle manifold.
Pratt & Whitney Water Wash Service Programs
Pratt & Whitney has exclusively licensed GTE’s proprietary technology and markets the closed loop engine wash service program under the brand name “Pratt & Whitney EcoPower™”. More than 60 airlines and military operators have benefited from GTE’s patented technology through the EcoPower™ service. Many of them have chosen to sign up parts or entire fleets of engines to longer term service agreements in order to benefit from EcoPower’s™ superior wash program. The EcoPower™ wash system is designed to service all OEM brands of engines on commercial and military aircraft engines. GTE is responsible for technology, intellectual property and the manufacturing of systems and Pratt and Whitney is responsible for the sales and marketing and fulfillment of the services. Over 75 systems have been deployed to date globally and customers include Southwest Airlines, Singapore Airlines, United Airlines, Hawaiian Airlines, Martinair and the United States Air Force.
- Southwest Airlines expects to save 5M pounds of fuel per year
compared to before the program
- Southwest Airlines expects 18 months of extra operation due to
reduced EGT temperatures.
- Southwest Airlines expects 100M pounds of reduced CO2 emission
equivalent of taking 10,000 cars of the street.
View Pratt & Whitney EcoPower™ Video
To learn more about Pratt & Whitney go to: www.pw.utc.com
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Power Generation Applications
The increased average power output and heat rate is obtained by minimizing the daily degradation due to compressor fouling by running a daily on-line compressor wash schedule. After increasing the gas turbine efficiency, the exhausts will be cleaner and help pollution control. Payback is typically just a question of months. Installation and operation is very simple and well received by our customers.
The GTE patented high pressure online/offline wash is individually developed for each type of turbine following a design procedure that is well established and proven. It includes 3D modeling of inlet and nozzle positioning, CFD (Computational Fluid Dynamics) to study droplet trajectory, and confirm and evaluate nozzle positions. GTE equipment can be made ATEX EEXD Zone-1 classed for refinery and other hazardous area applications. An integrated control panel enables easy user operation.
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Oil & Gas Applications
The increased availability is obtained by minimizing the daily degradation due to compressor fouling by running a daily on-line compressor wash schedule, by increasing the Gas Turbine efficiency the exhausts will be cleaner and help pollution control. Payback is normally just a question of months. Installation and operation is very simple and well received by our customers.
Downloadable Marketing Materials
Compressor_Cleaning_Systems_Flyer
GTE_1325_Technical_Flyer
GTE_1000i_Technical_Flyer
GTE_1000i_Poster
GTE_80i_Poster
GTE_1325_Poster
GTE_NOZZLE_KIT_ENG
PowerGenWashSkid120MW_ENG
PowerGenWashSkid120MW_RUS
Oil&GasWashSkid14-35MW_ENG
Oil&GasWashSkid14-35MW_RUS
PowerGenWashSkid14-35MW_ENG
PowerGenWashSkid14-35MW_RUS
Oil&GasWashSkid20-40MW_ENG
Oil&GasWashSkid20-40MW_RUS
PowerGenWashSkid20-40MW_ENG
PowerGenWashSkid20-40MW_RUS
Oil&GasWashSkid35-55MW_ENG
Oil&GasWashSkid35-55MW_RUS
PowerGenWashSkid35-55MW_ENG
PowerGenWashSkid35-55MW_RUS
PowerGenWashSkid55-120MW_ENG
PowerGenWashSkid55-120MW_RUS
Oil&GasWashSkidupto14MW_ENG
Oil&GasWashSkidupto14MW_RUS
PowerGenWashSkidupto14MW_ENG
PowerGenWashSkidupto14MW_RUS
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Combustion
