Chapter 7, Problem 7.88P

. 10kg/sec of steam enters a condenser with enthalpy of 2300kJ/kg and velocity of 350m/s , the condensate leaves the condenser with enthalpy of 220kJ/kg and a velocity of 70m/s find the heat transfer to the coolingwater in ton/h.

S8

Q) A chimney of 32 m height has produced a draught of 1.6 cm of water when hot gas temperature is 300°C and ambient temperature is 27°C. The coal used contains 81% carbon, 5% moisture and remaining is ash. Neglecting losses, find the % excess air supplied. Assume complete combustion of carbon in the fuel.

2.A steam throttling valve with inlet conditions of 2MPA and 400C is connected to the inlet of the turbine. The turbine has 200kW power output and heat abstracted of 100kW. If the mass flow rate is 1kg/s and the exit temperature of steam is 300C, find the exit turbine pressure.

In the open-circuit steam plant, boiler feed water at atmospheric pressure 1 bar and 35oC is pumped into an oil-fired boiler which produces dry-saturated steam at 10 bar. This steam enters a steam turbine and is expanded isentropic ally to atmospheric pressure and freely discharged into the atmosphere. Find The thermal efficiency of the plant. The work ratio The specific steam consumption

The cycle comes with a net power cycle of 25.40 kW. The heat that goes out is 42.30 kW. Find the efficiency of the cycle?

Show given, complete solution, and diagram.  A steam power plant operates on the Rankine Cycle. The steam enters the turbine at 7 Mpa and 550 with a velocity of 30 m/s. It discharges to the condenser at 20kpa with a velocity at 90 m/s. Calculate the net workin kw for a flow of 37.8kg/s.  a. 23.23 Mw       c. 34.22 Mw b. 53.34  Mw     d. 46.54 Mw

At 10kPa pressure and dryness degree x=0.90, the steam coming out of the turbine goes to the pump with adiabatic efficiency of 0.85 after condensing in the condenser. The pump sends the condensed water to the steam boiler with a working pressure of 8MPa. a) Find the h.T values ​​of the inlet points of the condenser, pump and boiler  b) Since the flow rate of the condensed water is 9000 kg/h, find the load of the condenser  c) Find the power of the pump

A cortain diesel engine consume 100 liters for 262.5 kw - hr produced. ,echanical efficiency is 80% and generator efficiency is 93%. if the fuel oil used has a gravity of 25 apl. find the thermal efficiency based on indicated power