Chapter 8, Problem 8.7E

D part only

explain what a gas power cycle is and why understanding its operation is essential to engineers

Describe briefly the future of combined heat and power?

Which of the following is an example of an external irreversibility associated with a power plant? Pump inefficiencies Generator inefficiencies Condenser inefficiencies Turbine inefficiencies Pipe pressure losses

A heat engine operates by receiving heat from a reservoir at 900 oC at a rate of 800 kJ/min and rejects heat at a rate of 560 kJ/min to the ambient air at 27 oC. The entire work output of the heat engine is used to drive a refrigerator that removes heat from the refrigerated space at -5 oC and rejects heat to the same ambient air at 27 oC.i) Sketch the schematic diagram of the engine-refrigerator system.ii) Determine the thermal efficiency of the heat engine, %.iii) Determine the maximum thermal efficiency of the engine if it operates on a reversible cycle, %.iv) Determine the maximum COP of the refrigerator if it operates on a reverse Carnot cycle.v) Determine the maximum rate of heat removal from the refrigerated space, kJ/s.vi) Determine the rate of heat rejection to the ambient air from the refrigerator,kJ/s.

What is a combined cycle power plant (CCPP)? Describe briefly using schematic diagram.

Recommend general considerations when selecting a site for Thermoelectric Power Plant.

2. The maximum thermal efficiency possible for a power cycle operating between 1200°F and 225°F is: 58.73%

Ipaliwanang ang Geothermal Energy At Geothermal Power Plant (Tagalog)