Table of Contents
- 1 Which parameters influence the performance of gas turbine?
- 2 What are performance parameters of turbomachines?
- 3 What is turbine performance?
- 4 How gas turbine engine performance is measured?
- 5 What is specific speed of turbine?
- 6 What are the 5 major components of the gas turbine engine?
- 7 What are the important parameters considered for the finding the performance characteristics curves?
- 8 Which parameter is a part of the efficiency of turbine?
- 9 What is a turbine Hill curve?
- 10 What is the relationship between head and operating speed and efficiency?
Which parameters influence the performance of gas turbine?
Gas turbine site performance is directly affected by inlet air density and air environmental conditions. Since produced power and heat rate vary as a function of inlet temperature, pressure and inlet duct and exhaust duct pressure drop, vendors supply correction curves to convert ISO conditions to site conditions.
What are performance parameters of turbomachines?
The Performance of a turbomachine like pumps, water turbines, fans or blowers for incompressible flow can be expressed as a function of: (i) density of the fluid ρ (ii) Speed of the rotor N (iii) Characteristic diameter D (iv) Discharge Q Page 16 16 (v) Gravity head (gH) (vi) Power developed P and (vii) Viscosity µ.
What are the 2 basic principles that dictate performance of a gas turbine engine?
The pressure ratio of the compressor, the engine operating temperatures (turbine inlet temperature), and the individual component efficiencies will also influence both the performance and the efficiency of the overall engine. All these factors are considered during the design of the engine.
What is turbine performance?
Turbine efficiency is the ratio of actual work output of the turbine to the net input energy supplied in the form of fuel. For stand-alone gas turbines, without any heat recovery system the efficiency will be as low as 35 to 40 per cent.
How gas turbine engine performance is measured?
A test facility to measure performance of a micro gas turbine was set up and performance parameters such as turbine exit temperature, exhaust gas temperature, engine inlet temperature, compressor discharge pressure and temperature, and fuel and air flow rates were measured.
What are ISO conditions for gas turbines?
The standard conditions used by the gas turbine industry are 59 F/15 C, 14.7 psia/1.013 bar and 60\% relative humidity, which are established by the International Standards Organization (ISO) and frequently referred to as ISO conditions.
What is specific speed of turbine?
The specific speed value for a turbine is the speed of a geometrically similar turbine which would produce unit power (one kilowatt) under unit head (one meter). The specific speed of a turbine is given by the manufacturer (along with other ratings) and will always refer to the point of maximum efficiency.
What are the 5 major components of the gas turbine engine?
Major components include the compressor, combustion system, gas producer turbine, and power turbine. This design includes a two-stage gas producer turbine and a two-stage power turbine.
What are the four basic elements of turbine section?
13. TURBINE CONSTRUCTION The basic components of the turbine are the combustion discharge nozzles, the nozzle guide vanes, the turbine discs and the turbine blades.
What are the important parameters considered for the finding the performance characteristics curves?
speed, power, efficiency. Results are plotted in the form of curves and are known as performance characteristic curves.
Which parameter is a part of the efficiency of turbine?
pressure and temperature are key parameters. Higher the pressure and higher the level of superheat, better would be thermal efficiency.
What are the standard conditions used by the gas turbine industry?
The standard conditions used by the gas turbine industry are 59 F/15 C, 14.7 psia/1.013 bar and 60\% relative humidity, which are established by the International Standards Organization (ISO) and frequently referred to as ISO conditions.
What is a turbine Hill curve?
Typical Turbine Hill Curve: Efficiency as a function of head and flow are summarized on a hill curve similar to the one shown above for Francis turbine operating limits are imposed by cavitation limits, maximum power and pressure surges.
What is the relationship between head and operating speed and efficiency?
Efficiency and flow as a function of head and operating speed are typically summarized on a turbine performance hill curve. Turbine speed is constant across head range. Limits of operation is the performance range of the turbine e.g. for Francis turbine it is 65\% to 125\% of design head.
What kind of turbines does Gege make?
GE offers both heavy-duty and aircraft-derivativegas turbines for power generation and industri-al applications. The heavy-duty product line con-sists of five different model series: MS3002, MS5000, MS6001, MS7001 and MS9001.