What Should Be the Capacity of Steam Boiler to Run a Turbine to Produce 1MW

I thought the size, design and specification of the steam turbine would determine all of this.

One must also be very meticulous in doing any engineering work. Between 1mw and 1MW there is a difference of nine orders in magnitude.

Even with the larger power unit, this seems like a small amount of electric power for any utility steam turbine.

The capacity of the boiler & turbine must be greater than 1 MW.

Power Out = Power In - System Power Losses

or;

Power In + System Power Losses = Power Out

You must first convert the needed electrical energy units into BTU or Joules so that an energy conversion equation can be developed.

Then you must design or purchase a boiler and steam turbine that is capable of producing the required magnitude of energy plus enough energy to overcome inefficiencies and heat losses caused by system dynamics.

Finally you must factor in additional energy required to offset power losses due to wear and tear over the expected operational lifetime of the system.

The input temperature of the boiler is dependent on required steam flow and boiler design which in turn is determined by turbine design requirements.

There are a lot of factors that must be taken into consideration when designing or purchasing a 1 Megawatt generation system which this forum cannot address.

I suggest you research and identify your energy needs then contact several steam turbine manufacturers for their competent input and advice.

Before making a final decision on equipment I would suggest you research the different types of systems as well as different manufacturer's reliability and maintenance cost performance.

Good luck

1mw = 101.93 boiler hp

1 Horsepower (boiler):
The energy rate needed to evaporate 34.5lb of water at 212 °F (100 °C) in one hour. Equal to 33,475 BTU/h. Approximately 9.810657 x 10³. A boiler horsepower is more than 13 times larger than mechanical horsepower (~engine output).

http://www.kylesconverter.com/power/megawatts-to-boiler-horsepower

https://www4.eere.energy.gov/manufacturing/tech_deployment/amo_steam_tool/equipTurbine