Estimation of the Power Output of a steam turbine

[Chandrakanth_balusa]

Hoow can one estimate the amount of steam required to generate certain amount of electical power mathematicaly?

 

[russ_watters]

Hoow can one estimate the amount of steam required to generate certain amount of electical power mathematicaly?

Broad answer to broad question: From the energy content of the steam and the efficiency of the turbine.

 

[Chandrakanth_balusa]

Broad answer to broad question: From the energy content of the steam and the efficiency of the turbine.

Hello Russ Watters,

thanks for your response!
do u have any mathematical formulae concernig my question?

regards
Balusa

 

[russ_watters]

thanks for your response!
do u have any mathematical formulae concernig my question?

Again, the question is very broad, so the response is a basic conservation of energy statement:

Eout = Ein * Efficiency

If what you really want to know is the details of how a turbine works, I suggest starting with some of your own reading and then asking specific questions about that.

 

[anorlunda]

What you need is not a formula, but rather a table of the properties of water and steam. Such tables are easy to find on the Internet.

Take the energy of the steam coming into the turbine, minus the energy of the steam coming out. As a first approximation, assume 100% efficiency and neglect other secondary factors.

But you must specify the pressure, temperature, and mass flow of steam coming in, and the pressure, temperature, and (presumably the same) mass flow coming out of the turbine.

If the steam is re-heated, then you can use the same procedure to separately calculate the powers of the high pressure turbine and the intermetiade/low pressure turbines.

 

[Chandrakanth_balusa]

Again, the question is very broad, so the response is a basic conservation of energy statement:

Eout = Ein * Efficiency

If what you really want to know is the details of how a turbine works, I suggest starting with some of your own reading and then asking specific questions about that.

to be specific , I have some knowledge of how the turbine generators sets work in a steam power plant.
i have seen some threads regarding the calculation of turbine output power.
but i wanted to know if there is any possibility to estimate if how long a boiler can serve particular turbine generator set to produce power continously depending on the steam available,
if possible can anyone suggest me a nice platform or books regarding steam turbines with calculations and some examples!

 

[russ_watters]

to be specific , I have some knowledge of how the turbine generators sets work in a steam power plant.
i have seen some threads regarding the calculation of turbine output power.
but i wanted to know if there is any possibility to estimate if how long a boiler can serve particular turbine generator set to produce power continously depending on the steam available...

That's an oddly worded question. There should not be a "how long" or rather the answer is: as long as you keep providing it with fuel.

...if possible can anyone suggest me a nice platform or books regarding steam turbines with calculations and some examples!

Any introductory thermodynamics book will put considerable emphasis on this. I keep the textbook by Cengel and Boles at my desk (for HVAC).

There's lots of online resources that look good too, googling "steam turbine thermodynamics".

 

[Chandrakanth_balusa]

That's an oddly worded question. There should not be a "how long" or rather the answer is: as long as you keep providing it with fuel.

Any introductory thermodynamics book will put considerable emphasis on this. I keep the textbook by Cengel and Boles at my desk (for HVAC).

There's lots of online resources that look good too, googling "steam turbine thermodynamics".

ok thank you for valuable responses.
I will come back again with few question after gaining some knowledge of steam turbines.

 

[Chestermiller]

See Fundamentals of Engineering Thermodynanics by Moran et al.