Refrigeration and Air Conditioning Technology (MindTap Course List)
8th Edition
ISBN: 9781305578296
Author: John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher: Cengage Learning
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Textbook Question
Chapter 39, Problem 13RQ
Briefly describe and write the equation for perfect (complete) combustion.
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Consider the combined gas-steam power cycle. The topping cycle is a gas-turbine cycle that has a pressure
ratio of 8. Air enters the compressor at 300 K and the turbine at 1300 K. The isentropic efficiency of the
compressor is 80%, and that of the gas turbine is 85%. The bottoming cycle is a simple Rankine cycle
operating between the pressure limits of 7 MPa and 5 kPa. Steam is heated in a heat exchanger by the
exhaust gases to a temperature of 500°C and the isentropic efficiency of the turbine is 90 %. The exhaust
gases leave the heat exchanger at 450 K. Considering the mass flow rate steam as 1 kg/s, determine:
A) Net power, B) Total input heat, C) Total entropy generation, D) Energy efficiency, E) Exergy efficiency,
F) T-s diagram
Solve by EES
Compressor
Air -③
in
Exhaust
gases
Pump
Combustion
chamber
Gas
turbine
Gas cycle
Heat exchanger
Condenser
Steam
Steam
turbine
cycle
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Chapter 39 Solutions
Refrigeration and Air Conditioning Technology (MindTap Course List)
Ch. 39 - Define a residential energy audit.Ch. 39 - Name and briefly explain the three broad...Ch. 39 - Name four nationally recognized energy...Ch. 39 - Performing a home energy audit starts with a...Ch. 39 - Name seven base loads, or LAMEL loads, as they...Ch. 39 - Name and briefly explain the five most common...Ch. 39 - One Pascal (Pa) is equal to how many inches of...Ch. 39 - One inch of water column (in. WC) is equal to how...Ch. 39 - Briefly describe a blower door test.Ch. 39 - What can an infrared scanning camera do for an...
Ch. 39 - Briefly describe what a duct blower's function is...Ch. 39 - Briefly describe how to check for duct leakage to...Ch. 39 - Briefly describe and write the equation for...Ch. 39 - Briefly describe and write the equation for...Ch. 39 - When performing a combustion efficiency test,...Ch. 39 - Briefly define draft as it applies to a combustion...Ch. 39 - Briefly define backdrafting as it applies to a...Ch. 39 - Briefly define spillage as it applies to a...Ch. 39 - Name four causes for backdrafting....Ch. 39 - What will a cracked heat exchanger cause in a...Ch. 39 - What is the function of flame safeguard controls?Ch. 39 - Name three common flame safeguard controls. _____,...Ch. 39 - Define primary air as it applies to a combustion...Ch. 39 - Define secondary air as it applies to a combustion...Ch. 39 - Define dilution air as it applies to a combustion...Ch. 39 - Define excess air as it applies to a combustion...Ch. 39 - What is the difference between an induced-draft...Ch. 39 - What is the difference between over-the-fire draft...Ch. 39 - What is meant by a direct-vented,...Ch. 39 - What is meant by an energy conservation measure...Ch. 39 - What is the difference between a base load and...Ch. 39 - Define a home energy index.
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