COGENERATION & RESIDUAL HEAT RECOVERY

Which of the following is not a benefit of cogeneration

• Increased efficiency of energy conversion and use
• Reduced greenhouse gas emissions
• Reduced power factor
• Reduced transmission losses

Cogeneration is the simultaneous generation of

• Heat and power
• Mechanical energy and power
• Steam and condensate
• All of the above

The Ranking Cycle is related to

• Boiler
• Steam turbine
• Condenser
• All of the above

What is an important advantage of closed-cycle gas turbine cogeneration systems?

• Working fluid remains clean and it does not cause corrosion or erosion
• Low capital costs
• High pressure of produced steam
• High temperature of produced steam

The cogeneration system which has a high overall efficiency is the

• Gas turbine
• Back pressure steam turbine
• Reciprocating engine
• Combined cycle

Which of the following statements is not correct

• A topping cycle plant generates electricity or mechanical power first
• A bottoming cycle plant generates heat first
• A bottoming cycle plant generates electricity or mechanical power first
• Both a and b

How is the efficiency of cogeneration measured?

• Electrical conversion
• Thermal recovery
• Both a and b
• None of the above

The cogeneration is not applicable to which type of industry?

• Sugar
• Paper and pulp
• Refinery
• Refractory / brick-making

What is a typical efficiency of a cogeneration system?

• 0.58
• 0.68
• 0.85
• 0.95

Which fuel type can be used in a gas turbine?

• Light fuel oil
• Natural gas
• Diesel
• All of the above