Question

A steam engine requires 1.82PSI or 12,886N/m^2 has a diameter of 0.222m or about 8 inch it has 2m/s velocity, it is getting its steam from a boiler, and find the temperature and mass flow rate?

The steam should be provided by a boiler, but the steam lose some energy before it reaches the cylinder.
find the temperature of the steam?. In addition, you have to find the power to be supplied to the boiler for the water supply at 60 degree Fahrenheit, And energy?

Answer 1

Velocity, V = 2 m/s

Diameter, D = 0.222 m

Area,

Pressure, p = 12886 N/m²

Assuming the steam is saturated vapour.

So, using Steam table

Temperature at that pressure = 50.86 ⁰C

T=50.86 ⁰C

Steam density = = 0.0865 kg/m³

Enthalpy = h_g = 2592.2 kJ/kg

mass flow rate,

Supplied water temperature Tw = 60 ⁰F = 15.5 ⁰C

Power supplied to the boiler,

So, P = 18.36 kW