How do you calculate steam turbine output?

The unit work equation is: wt = (inlet steam enthalpy – cold reheat enthalpy) + (hot reheat enthalpy – turbine exhaust enthalpy). In this case, wt = (1,474.1 – 1,248.1) + (1,526.5 – 1,003.9) = 748.6 Btu/lbm. As can be seen, reheating considerably increases the work output as compared to the non-reheat example.

How do you calculate turbine steam consumption?

Calculation Details

  1. Step 1: Determine Inlet Properties.
  2. Step 2: Calculate Ideal Outlet Properties (Inlet Entropy equals Outlet Entropy)
  3. Step 3: If solve for ‘Isentropic Efficiency’, Determine Outlet Properties.
  4. Step 3: If solve for ‘Outlet Properties’, Determine Outlet Specific Enthalpy.

How do you calculate flow rate of a turbine?

The formula for the power calculation is P = η * ρ * g * h * Q. The volumetric flow rate can be calculated as Q = A * v. Example: at a cross-sectional area of 30 square meters and a flow velocity of 2 meters per second, the volumetric flow rate is 60 cubic meters per second.

How is steam production calculated?

Use btu/hr (British thermal units/hour) heat input rate to calculate boiler steam flow. A boiler burning 20 gallons per hour would produce [(150,000 btu/gal x 20 gal/hr) / 970.28 btu/lb] x 0.85 (efficiency) for a total of 2,628.1 lb/hr of steam.

How is steam generated calculated?

Calculation Details

  1. Blowdown Mass Flow = Feedwater Mass Flow * Blowdown Rate.
  2. Steam Mass Flow = Feedwater Mass Flow – Blowdown Mass Flow.
  3. Steam Mass Flow = Feedwater Mass Flow – Feedwater Mass Flow * Blowdown Rate.
  4. Feedwater Mass Flow = Steam Mass Flow / [ 1 – Blowdown Rate ]

How do you calculate thermal efficiency of a steam turbine?

wt = (inlet steam enthalpy – cold reheat enthalpy) + (hot reheat enthalpy – turbine exhaust enthalpy). In this case, wt = (1,474.1 – 1,248.1) + (1,526.5 – 1,003.9) = 748.6 Btu/lbm.

What is the maximum efficiency of a steam turbine?

Reliability Steam turbines are a mature technology with excellent durability and reliability. Other Steam turbines are typically designed to deliver relatively large amounts of thermal energy with electricity generated as a byproduct of heat generation. Overall CHP efficiencies can reach or exceed 80%.

How do I calculate steam quality?

Steam quality is a measure of the amount of saturated steam that coexists with its condensate in a given system. Calculate it by dividing the mass of steam by the total mass of steam and condensate.