Recent Operating Experience With British Naval Gas Turbines

1963 ◽  
Vol 85 (1) ◽  
pp. 46-67 ◽  
Author(s):  
G. F. A. Trewby
Keyword(s):  
Gas Turbines ◽  
High Speed ◽  
Operating Experience ◽  
Royal Navy ◽  
Electric Generator ◽  
Prime Movers

In recent years gas turbines have been introduced into operational warships of the Royal Navy as propulsion machinery for both high-speed craft and major warships, as electric generator prime movers, and for certain miscellaneous applications. Taking each of these applications in turn, the paper gives details of the important installation problems which have been met and the practical operating experience both ashore and afloat which has been obtained in recent years with eight different designs of British Naval gas turbines. In the general conclusions an attempt is made to assess the main lessons which have been learned from the recent operating experience with the Naval gas turbines described in the paper.

scholarly journals Royal Navy Experience of Propulsion Gas Turbines and How and Why This Experience is Being Incorporated Into Future Designs

1999 ◽  
Author(s):  
James Rand ◽  
Nigel Wright
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Electric Propulsion ◽  
High Speed ◽  
Turbine Engines ◽  
Gas Turbine Engines ◽  
Royal Navy ◽  
Electric Ship ◽  
Prime Movers ◽  
Aero Engines

The Royal Navy (RN) has in-service experience of both marinised industrial and aero derivative propulsion gas turbines since the late 1940’s. Operating through a Memorandum of Understanding (MOU) between the British, Dutch, French and Belgian Navies the current in-service propulsion engines are marinised versions of the Rolls Royce Tyne, Olympus and Spey aero engines. Future gas turbine engines, for the Royal Navy, are expected to be the WR21 (24.5 MW), a 5 to 8 MW engine and a 1 to 2 MW engine in support of the All Electric Ship Project. This paper will detail why the Royal Navy chose gas turbines as prime movers for warships and how Original Equipment Manufacturers (OEM) guidance has been evaluated and developed in order to extend engine life. It will examine how the fleet of engines has historically been provisioned for and how a modular engine concept has allowed less support provisioning. The paper will detail the planned utilisation of advanced cycle gas turbines with their inherent higher thermal efficiency and environmental compliance and the case for all electric propulsion utilising high speed gas turbine alternators. It will examine the need for greater reliability / availability allowing single generator operation at sea and how by using a family of 3 engines a nearly flat Specific Fuel Consumption (SFC) down to harbour loads can be achieved.

Royal Navy Experience of Propulsion Gas Turbines and How and Why This Experience is Being Incorporated Into Future Designs

2000 ◽  
Vol 122 (4) ◽  
pp. 680-684 ◽  
Author(s):  
James Rand ◽  
Nigel Wright
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Electric Propulsion ◽  
High Speed ◽  
Turbine Engines ◽  
Gas Turbine Engines ◽  
Royal Navy ◽  
Electric Ship ◽  
Prime Movers ◽  
Aero Engines

The Royal Navy (RN) has in-service experience of both marinized industrial and aero derivative propulsion gas turbines since the late 1940s. Operating through a Memorandum of Understanding (MOU) between the British, Dutch, French, and Belgian Navies the current in-service propulsion engines are marinized versions of the Rolls Royce Tyne, Olympus, and Spey aero engines. Future gas turbine engines, for the Royal Navy, are expected to be the WR21 (24.5 MW), a 5 to 8 MW engine and a 1 to 2 MW engine in support of the All Electric Ship Project. This paper will detail why the Royal Navy chose gas turbines as prime movers for warships and how Original Equipment Manufacturers (OEM) guidance has been evaluated and developed in order to extend engine life. It will examine how the fleet of engines has historically been provisioned for and how a modular engine concept has allowed less support provisioning. The paper will detail the planned utilization of advanced cycle gas turbines with their inherent higher thermal efficiency and environmental compliance and the case for all electric propulsion utilizing high speed gas turbine alternators. It will examine the need for greater reliability/availability allowing single generator operation at sea and how by using a family of 3 engines a nearly flat Specific Fuel Consumption (SFC) down to harbour loads can be achieved. [S0742-4795(00)01203-5]

The Gas Turbine Family GT13E and GT13E2 Provides Reliable Power for Asia

1996 ◽  
Author(s):  
Gregor Gnädig
Keyword(s):  
Power Generation ◽  
Gas Turbines ◽  
Power Plants ◽  
High Efficiency ◽  
Operating Experience ◽  
Diesel Oil ◽  
Combined Cycle ◽  
Asian Countries ◽  
High Efficient ◽  
Prime Movers

Many Asian countries are experiencing economic growth which averages 5–10% per year. This environment has led to a privatization process in the power generation industry from typically state-run utilities to a system in which a federal agency oversees a market divided by private utilities and independent power producers (IPP) with the need for high efficiency, reliable power generation running on natural gas and diesel oil. In the 50 Hz market, modem, high efficient gas turbines of the type GT13E and GT13E2 have been chosen as prime movers in many combined cycle power plants in Asian countries. This paper includes a product description, and a general overview of GT13E and GT13E2 operating experience, well as an economic evaluation of a typical 500 MW combined cycle power plant.

scholarly journals Use of the Brayton Cycle in Solar Electric Power Generation

1989 ◽  
Author(s):  
Dan Weiner ◽  
Giora Meron
Keyword(s):  
Gas Turbines ◽  
High Performance ◽  
Attractive Alternative ◽  
Brayton Cycle ◽  
Electric Generator ◽  
Central Receiver ◽  
System Components ◽  
Prime Movers ◽  
Turboshaft Engine ◽  
And Control

The utilization of gas turbines in a central receiver is an attractive alternative due to the ability of these prime movers to endure temperatures of about 2000°F while achieving high performance. In this paper the problems of modifying a 250 kW Allison Turboshaft Engine and its conversion into solar gas turbines are presented. The various solutions referring to the various system components, such as combustion chamber, hot pipeline, electric generator and control system are detailed.

scholarly journals Experience With Gas Turbines as Prime Movers for Underground Storage of Natural Gas

1971 ◽  
Author(s):  
R. C. Bonner
Keyword(s):  
Natural Gas ◽  
Gas Turbines ◽  
Operating Experience ◽  
Economic Planning ◽  
Underground Storage ◽  
Basic Design ◽  
The Past ◽  
Engine Compressor ◽  
Prime Movers ◽  
Aircraft Type

Aircraft-type gas turbines have been used by Consumers Power Co. to provide power for the injection of natural gas into underground storage for the past five years. Special controls, auxiliary and driven equipment are required for this unique application. Operating experience has prompted numerous refinements as well as providing information for maintenance and economic planning. The paper describes the basic design of the engine-compressor units for a remotely controlled, unmanned compressor station as well as highlights from the operating experience with this application.

scholarly journals Endurance Testing of Marine Gas Turbines for the Royal Navy

1996 ◽  
Author(s):  
Clive McCartney ◽  
Robin D. Hughes
Keyword(s):  
Gas Turbines ◽  
Operating Experience ◽  
Royal Navy ◽  
Test Bed ◽  
Endurance Testing ◽  
Testing Techniques ◽  
Aero Engines ◽  
The 1960S ◽  
Major Surface ◽  
Operating Regimes

Royal Naval policy since 1967 has been to employ gas turbines for major surface warship propulsion. In support of this policy, all new engines have been subject to endurance testing at DTEO Pyestock. Marinised Tyne and Olympus aero engines were tested during the 1960s and 70s which confirmed their initial suitability for RN service and uprated performance. Lessons learnt in formulating the test process were applied to the Spey SMIA engine programme in 1982. Further refinements, following comparison of sea operating experience with test bed results were applied to the 3000 hour endurance trial of the 18 MW Spey SMIC engine, which completed in 1993. The current testing at Pyestock is of the 21.6 MW Intercooled Recuperated (1CR) WR21 engine, presently under development for the USN in cooperation with the RN. The endurance trials being planned will require a further change in emphasis in order to address the unique operating regimes of an 1CR engine. The paper describes the evolution of endurance testing techniques, highlighting the particular requirements for complex cycle engines and discusses the opportunities that arose for piggyback trials during typical endurance testing regimes.

Design, Testing, and Performance Impact of Exhaust Diffusers in Aero-Derivative Gas Turbines for Mechanical Drive Applications

2019 ◽  
Author(s):  
Alberto Scotti Del Greco ◽  
Tomasz Jurek ◽  
Daniele Di Benedetto ◽  
Vittorio Michelassi ◽  
Giacomo Ragni ◽  
...  
Keyword(s):  
Gas Turbines ◽  
High Speed ◽  
Large Scale ◽  
Operating Conditions ◽  
Cycle Performance ◽  
Shaft Speed ◽  
Significant Drop ◽  
Electric Generator ◽  
Power Turbine ◽  
Inlet Conditions

Abstract The demand for gas-turbine (GT) based flexible power generation and mechanical drive is increasing due to the growing penetration of renewables and due to the need to quickly adjust production and operate at part load respectively. As efficiency operability low emissions, small footprint, availability and maintainability are of paramount importance, engine designers are leaning towards aircraft engine architectures that, with appropriate modifications mostly to the combustion system and turbine, can meet market needs. To leverage the large experience from aircraft propulsion, aero-derivative engines maintain the same architecture, with a high-speed shaft core, and a low-speed shaft driven by a multi-stage low-pressure turbine. While in aircraft engines power is adjusted by changing fuel rate and shaft speed, that go hand in hand, mechanical drive engines have more stringent needs that require changing the delivered power by keeping the shaft speed under control to guarantee the operation of the driven equipment (an LNG compressor or an electric generator). Therefore, the power turbine may deliver exit flow profiles and angles that put the turbine exhaust diffuser under severe off-design conditions, with the onset of large scale separations, large kinetic losses, and ultimately a significant drop on cycle performance. This paper describes Baker Hughes, a GE company experience in the CFD assisted design and scale-down testing of aero-derivative exhaust diffusers. The design incorporates the requirements of hot-end mechanical drive in multiple the power turbine operating conditions to determine the best compromise between peak design performance and off-design operability. The test in similitude conditions considered four relevant operating points. The inlet conditions matched with the power turbine exit profiles by the concerted action of swirl vanes and perforated plates, the design of which was heavily CFD assisted. Predictions matched measurements in terms of pressure recovery, kinetic losses, and exhaust velocity profiles. Different data post-processing and averaging were considered to properly factor in the diffuser losses into the overall turbine performance.

A New Approach to Gas Turbine Systems in the All Electric Warship Era

2003 ◽  
Author(s):  
Abe Boughner
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Electric Propulsion ◽  
Electric Generator ◽  
Design Concepts ◽  
Machinery Plant ◽  
New Concepts ◽  
On Line ◽  
Generation Capacity ◽  
Prime Movers

This paper will focus on discussions of new concepts for integration of gas turbines into advanced warship designs. The advancement of the electric warship creates several revolutionary opportunities in ship design concepts. The Integrated Power System (IPS) combines propulsion and auxiliary loads such that any electric generator can supply any load including electric propulsion, combat and hotel loads with light areo derivative gas turbines serving as prime movers for power generation. A combination of small and large gas turbine generators are fitted so that the operator can match the on-line generation capacity to the demand thereby keeping the gas turbines loaded to efficient levels. The IPS, or All Electric Warship concept, although a matter of much interest and study, will not be discussed in this paper. This paper will discuss how the light aero engine coupled with the IPS concept allows greater flexibility in overall design of the machinery plant as well as several new concepts for gas turbine systems in warships.

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