Question

Design a simple Rankine cycle for your LNG plant. Your process should be scaled to produce 50MW of net power. Minimum driving force=5-degree Fahrenheit; Isentropic efficiency=88%; Cooling water inlet temp.=60 degree Fahrenheit; Turbine inlet steam Temp=950 degree Fahrenheit. Assume you have saturated liquid leaving the condenser, no pressure drops in heat exchangers, and a minimum turbine outlet quality of 95%.

a. A process flow diagram with streams numbered and for steam and cooling water in lb./hr.

b. A table of the following stream properties at each location: Stream number, temperature (degree F), Pressure(psia), mass flow rate(lbm/hr).

c. supporting calculations.

d. Assuming your heat source is natural gas, estimate the daily cost for heat added (research cost online for natural gas by heat content), and the thermal efficiency of the plant

I don't have a photo of question as it was given by professor in the class.

Answer 1