# The following data are for a simple steam power plant as

Chapter 4, Problem 118HP

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QUESTION:

Problem 118HP

The following data are for a simple steam power plant as shown in Fig. P4.118 State 6 has x6 =0.92 and velocity of 200 m/s. The rate of steam flowis 25 kg/s, with 300 kW of power input to the pump. Piping diameters are 200mmfrom the steam generator to the turbine and 75 mm from the condenser to the economizer and steam generator. Determine the velocity at state 5 and the power output of the turbine.

 State 1 2 3 4 5 6 7 P, kPa 6200 6100 5900 5700 5500 10 9 T, °C 45 175 500 490 40 h, kJ/kg 194 744 3426 3404 168

FIGURE P4.118

QUESTION:

Problem 118HP

The following data are for a simple steam power plant as shown in Fig. P4.118 State 6 has x6 =0.92 and velocity of 200 m/s. The rate of steam flowis 25 kg/s, with 300 kW of power input to the pump. Piping diameters are 200mmfrom the steam generator to the turbine and 75 mm from the condenser to the economizer and steam generator. Determine the velocity at state 5 and the power output of the turbine.

 State 1 2 3 4 5 6 7 P, kPa 6200 6100 5900 5700 5500 10 9 T, °C 45 175 500 490 40 h, kJ/kg 194 744 3426 3404 168

FIGURE P4.118

Solution 118HP

Step 1 of 6

For the given steam power plant, we have to calculate the velocity at state 5 and the output power of turbine.

Given data,

Quality at state 6,

Velocity at state 6,

Rate of flow,

Diameter,

Input power,

Enthalpy at state 5,

State 6 pressure,

To find,

Velocity at state 5,

Output power,