Chapter 8, Problem 8.47CU

True false want to make sure I have the right answers for study

The correct answers are 1,560 J and 0.284   Plz

Give an example of Exergy Destroyed During Mixing of Fluid Streams.

A heat engine produces 50 kW of power while consuming 50 kW of heat from a source at 1390 K, 70 kW of heat from a source at 1690 K , and rejecting the waste heat to the atmosphere at 300 K. Part A Determine the reversible power. Express your answer to three significant figures and include appropriate units. ? Value Units Submit Request Answer Part B Determine the rate of exergy destruction (I) in the engine's universe. Express your answer to three significant figures and include appropriate units. HẢ Value Units

(a) With a neat sketch, explain the working of Floating gas holder type biogas plant. List any two disadvantages of this type of biogas plant.

boiler furnaces with air fed in 20% excess or more, while today improved boiler designs enable the use of 5-10% excess air. Discuss as many possible negative consequences as you can think of for the air-to-fuel ratio being (i) too low and (ii) too high.

Water is the working fluid in a reheat-regenerative Rankine cycle with one closed feedwater heater and one open feedwater heater. Steam enters the turbine at 1400 lbf/in.² and 1100°F and expands to 500 lbf/in.2, where some of the steam is extracted and diverted to the closed feedwater heater. Condensate exiting the closed feedwater heater as saturated liquid at 500 lbf/in.² undergoes a throttling process to 120 lbf/in.² as it passes through a trap into the open feedwater heater. The feedwater leaves the closed feedwater heater at 1400 lbf/in.² and a temperature equal to the saturation temperature at 500 lbf/in.² The remaining steam is reheated to 1000°F before entering the second-stage turbine, where it expands to 120 lbf/in.² Some of the steam is extracted and diverted to the open feedwater heater operating at 120 lbf/in.2 Saturated liquid exits the open feedwater heater at 120 lbf/in.² The remaining steam expands through the third-stage turbine to the condenser pressure of 2 lbf/in.²…

Determine for the cycle: (a) the mass flow rate of steam entering the first stage of the turbine, in lb/h. (b) the rate of exergy input, in Btu/h, to the working fluid passing through the steam generator. (c) the magnitude of the exergy output, in Btu/h, of the net power output. (d) the magnitude of the exergy loss in the condenser, in Btu/h. (e) the exergy destroyed in the tubine, in Btu/h. (f) the exergy destroyed in the open feedwater heater, in Btu/h.

All equilibrium reversible processes have a total entropy to be equal to______