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La secuencia de eventos termodinámicos en un motor de combustión puede representarse y calcularse en un diagrama idealizado. Idealizado significa aquí que la compresión y expansión de los gases en el cilindro se considera isentrópica, es decir, sin aumento o pérdida de calor. En la práctica, naturalmente es necesario que los cilindros Sean enfriados para que se alcancen pequeños valores máximos de presión y temperatura.
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What is HP and LP turbine expansion?
HP Turbine is High Performance Turbine LP Turbine is Low Performance Turbine
What to do about turbine rotor differential expansion?
my LP turbine differential expansion increase ,when rated gland steam temperature maintain.
What is casing expansion of steam turbine?
casing and shaft are made of alloy steel they are supposed to expand when heated (at/2 *length of turbine.).wherea is coefficient expansion of material.t=finaltemperature ( of casing or shat)-ambienttemperaturel=length of turbine in meter
Why LP turbine diaphragm breaks?
Lp turbine diaphragm breaks due to positive pressure inside the condenser because of steam expansion.
What is interlocks in steam turbine?
Interlock system is in turbine for protect the turbine. different types of interlocks in turbine 1. high vibration, 2. Bearing oil Temp,3. vacuum related, 4. over speed, 5. differential expansion, 6. casing expansion, 7. lube oil header Pressure. 8. Axil shift. etc... . this interlocks is keep the turbine in safe mode in any abnormalities.
What is the difference between isentropic and isenthalpic expansion?
isenthalpic expansion is through PRDS or control valve where entropy changes. Whereas expansion through a steam turbine is isentropic one and enthalpy drops. isentropic expansion is more efficient process as compared to isenthalic one.
What is reheat factor?
It is the ratio of cumulative heat drop to isentropic heat drop in a multistage steam turbine.
What is HP and LP turbine expansion?
HP Turbine is High Performance Turbine LP Turbine is Low Performance Turbine
What to do about turbine rotor differential expansion?
my LP turbine differential expansion increase ,when rated gland steam temperature maintain.
What is absolute expansion of steam turbine?
it's the thermal expansion in the casing of hp or ip turbine can be noticed by journal or thrust bearing when moving <<
What is the main isentropic thermodynamic process?
Practically there is no reversible isentropic process but to make the concept easier to be understood, you have to assume the following: * Ideal gas. * no friction losses. * Adiabatic preocess (no heat gain, no heat loss). API 520 part 1 Appendix B assumes that the vapor expansion through a nozzle or a pressure relief valve follows an isentropic path.
What has the author R Edse written?
R. Edse has written: 'Design of supersonic expansion nozzles and calculation of isentropic exponent for chemically reacting gases'
What is casing expansion of steam turbine?
casing and shaft are made of alloy steel they are supposed to expand when heated (at/2 *length of turbine.).wherea is coefficient expansion of material.t=finaltemperature ( of casing or shat)-ambienttemperaturel=length of turbine in meter
What is expansion turbine?
differential expansion is refer to differential distance between rotor blade and fix blade.rotor expand toward generator and casing expand toward control valve.when temperature increase ,expansion in casing and rotor.so rotor mass is less than casing which rotor expand more than casing.
Turbine differential expansion should be positive or negative?
Turbine diff expansion can be positive or negative and depends on the convention used. The usual convention is that positive expansion is rotor expanding faster (hotter) than fixed components. Expansion is dictated by steam flow, gland steam temperatures etc
How do you lower turbine differential expansion?
by controlling main steam flow
Why LP turbine diaphragm breaks?
Lp turbine diaphragm breaks due to positive pressure inside the condenser because of steam expansion.
