India develops gas turbines for ships
July 17th, 2008 - 10:09 pm ICT by IANS ( 3 comments )
New Delhi, July 17 (IANS) Catapulting India into the elite club of marine gas turbine producers, the Defence Research and Development Organisation (DRDO) has modified the Kaveri engine, meant for powering the indigenous Light Combat Aircraft (LCA) enable it propel naval ships. With this, India joins an exclusive club that includes the US, Russia, Britain and the Ukraine.
“The Gas Turbine Research Establishment (GTRE at) Bangalore has come up with a modified marine version, as a spin off during research, to develop shaft power for propelling Indian naval ships,” a defence ministry statement said Thursday.
The modified engine is made by using the core of the Kaveri engine.
“The scientists added the core of Kaveri engine to a low pressure compressor and turbine as a gas generator to design a free power turbine for maritime applications,” the statement said.
The engine has been transported to the Naval Dockyard at Visakhapatnam for testing.
“The engine has the potential of propelling the Rajput class of destroyers of the Indian Navy,” the statement added.
- Kaveri engine to be installed in 2018 - Sep 16, 2010
- India flight tests indigenous jet engine in Moscow - Nov 04, 2010
- Modified Kaveri engine to propel Indian Navy ships - Jul 17, 2008
- GE Aviation engine bid lowest for India's jet fighter - Sep 30, 2010
- DRDO develops marine gas turbine engine for Indian Navy - Jul 17, 2008
- Kaveri engine completes tests in Russia - May 02, 2011
- DRDO conducts successful maiden flight test of Kaveri Engine - Nov 04, 2010
- GE engine set to power India's indigenous combat fighter (Lead) - Sep 30, 2010
- Beg, borrow or steal: IAF chief's advice to defence scientists - Oct 19, 2011
- Indian combat jet with indigenous engine further delayed - Feb 03, 2009
- Manmohan Singh leaves for Vizag to launch India's first nuclear submarine - Jul 26, 2009
- Defence technologies transferred to India not the best: Antony (Lead) - Feb 07, 2011
- Three naval personnel killed at dockyard - May 18, 2011
- Bids received for indigenous fighter aircraft's engines - Dec 14, 2009
- Naval LCA engine test successful - Sep 27, 2011
Tags: defence ministry, defence research, development organisation, drdo, elite club, gas generator, gas turbine research, gas turbines, gtre, indian navy, light combat aircraft, maritime applications, ministry statement, naval dockyard, naval ships, power turbine, pressure compressor, research establishment, shaft power, visakhapatnam
April 27th, 2009 at 11:47 pm
Dear Sirs,
Is proposed hybrid method provides efficiency enhancement and power output saving of Gas Turbines operation at off - design conditions.
Thank you in advance,
Lev Valdman
November 9th, 2009 at 1:29 pm
HYBRID METHOD ENHANCING
GAS TURBINES (GT) EFFICIENCY
1. Introduction
Hybrid and universal method comprising new technologies enhancing efficiency of GT operation at off – design conditions.
2. Application fields
* GT for Ships and Vehicles
* Industrial GT using both natural gas and oil fuel.
3. Final product
Autonomous auxiliary systems / power units attachment to existing and in future designed GT. No GT structural change required.
4. Technical problems being solved by the method
GT efficiency is very sensitive to the density changes of the inlet air dependent on the temperature (Ta) and pressure of the ambient air. For instance, increase of Ta from 15 to 40 degree C causes loss of the inlet air mass flow of about 18 %, cycle efficiency loss of about 3 % and power generation loss of about 24 %.
The problem is to prevent from the loss of inlet air mass flow.
Proposed hybrid method comprising a number of various technologies and auxiliary systems ensure preventing or slowing - down GT efficiency and power generation loss under such conditions independently of GT type.
5. Existing solutions of the problem.
A number of various technologies and auxiliary systems are directed to improvement of Industrial GT performance at off - design conditions, for instance:
* Inlet air pre – cooling using Fog system for spray of treated water into the inlet compressor tract. Fog system consumption about 3% electric energy for much water treatment and driven high pressure water pump that atomize water particles. Developed by GE, Siemens, Alstom, Hitachi, Enhanced Turbine Output Holding –ETOH.
* Inlet air pre-compression by fan driven by mechanical connection to the turbine or an electric motor. Developed by GE, ETOH.
* Introduction of cooled secondary air by auxiliary compressor driven by an electric motor. Developed by Farkas & Manelli, MAN.
* Fuel pre-heating by transferring heat between fuel channel and outlet gases or of the highly heated air flow from the compressor outlet. Developed by GE, Siemens, Alstom, Tochiba.
However every of these technologies have limitation of capacity improvement of GT performance and use different types energy sources for realizing it.
6. What is proposed?
Hybrid method uniting in combination some of the following technologies:
* Diverted by control valve compressed air or natural gas portion.
* Pre – compression of inlet air flow by fan driven by means using diverted compressed air or natural gas portion energy.
* Pre – cooling of inlet air flow or cooling air flow between first and second compressor.
* Secondary combustion air supply by auxiliary compressor driven by auxiliary turbine.
Thus forming new technology provides denser inlet air zone ahead of first or second compressor enhancing air mass flow in combustion chamber.
* Fuel pre-heating by transferring heat between fuel channel and high heated diverted compressed air portion,
Combination of increased air mass flow and heated fuel within combustion chamber ensures additional enhancing efficiency and power generation of GT.
Method comprises different auxiliary system designs for realizing it.
Some of the system designs are based on prototype – US 2007/0095072 presented by Alstom Technology which have both similar and advantageous particles.
7. Why is it better?
* Summarized effect of used technologies provides prevention cycle efficiency /
GT power generation loss under off – design conditions.
* Simple adaptation to every GT type.
* No need for structural changes in operating GT.
* Method allows to increase oxidation process completeness of toxic components thus Emission performance enhancement of GT.
* Method also allows Propulsion and Dynamic performance enhancement of GT for Ships and Vehicles operation at acceleration and transient conditions.
Effect due to:
** Decrease time for control signal transmission to control means ensuring additional combustion air supply.
** Reduction exhaust back pressure by installation in turbine outlet auxiliary ejector function as a suction pump.
8. Project condition
- The method and set-up schematics for different GT types were developed.
- Patent applications: US 61 / 077, 243; IL 192 871 and IL 199803
comprises 11 system designs.
9. Expected Benefits
Proposed Method in comparison to conventional
Industrial GT Power Generation allows:
1. At standard conditions:
Nominal Turbine Power Enhancement at least 4 %
2. At ambient air temperature 40 degree C
* Power Generation Saving more than 15 % without Treated Water Exploitation - Electricity Production Cost Reduction.
* Combination with existing Fog. System providing Power Generation Saving about 22 % … 25 % with significant saving of Treated Water, depending on GT type and operation conditions –
Additional Electricity Production Cost Reduction.
* Reduction of Specific Fuel Consumption more than 5 % -
Fuel Economy.
* Elimination or Reduction of Treated Water and Electricity Energy
( 3% ) Consumption - Maintenance Cost Reduction.
December 16th, 2010 at 1:05 pm
We can improve the efficiency of Gas Turbine by providing modified Air Intake System/and Inlet Air Chilling.Presentation has already been forwarded to Directorate-Naval Design