- 8.81C: What final state will maximize the work output of a device?
- 8.82C: Is the exergy of a system different in different environments?
- 8.83C: How does useful work differ from actual work? For what kind of syst...
- 8.84C: Consider a process that involves no irreversibilities. Will the act...
- 8.85C: Consider two geothermal wells whose energy contents are estimated t...
- 8.86C: Consider two systems that are at the same pressure as the environme...
- 8.87C: What is the second-law efficiency? How does it differ from the firs...
- 8.88C: Does a power plant that has a higher thermal efficiency necessarily...
- 8.89C: Does a refrigerator that has a higher COP necessarily have a higher...
- 8.810C: Can a process for which the reversible work is zero be reversible? ...
- 8.811C: Consider a process during which no entropy is generated (Sgen 5 0)....
- 8.812: The electric power needs of a community are to be met by windmills ...
- 8.813E: Saturated steam is generated in a boiler by converting a saturated ...
- 8.814: One method of meeting the extra electric power demand at peak perio...
- 8.815: How much of the 100 kJ of thermal energy at 650 K can be converted ...
- 8.816: A heat engine that receives heat from a furnace at 12008C and rejec...
- 8.817: Consider a thermal energy reservoir at 1500 K that can supply heat ...
- 8.818: A heat engine receives heat from a source at 1100 K at a rate of 40...
- 8.819: Reconsider Prob. 818. Using EES (or other) software, study the effe...
- 8.820E: A heat engine that rejects waste heat to a sink at 510 R has a ther...
- 8.821: A house that is losing heat at a rate of 50,000 kJ/h when the outsi...
- 8.822E: A freezer is maintained at 208F by removing heat from it at a rate ...
- 8.823: Show that the power produced by a wind turbine is proportional to t...
- 8.824C: Can a system have a higher second-law efficiency than the first-law...
- 8.825: A mass of 8 kg of helium undergoes a process from an initial state ...
- 8.826E: Air is expanded in an adiabatic closed system from 180 psia and 140...
- 8.827E: Which is a more valuable resource for work production in a closed s...
- 8.828: Which has the capability to produce the most work in a closed syste...
- 8.829: A pistoncylinder device contains 8 kg of refrigerant- 134a at 0.7 M...
- 8.830: The radiator of a steam heating system has a volume of 20 L and is ...
- 8.831: Reconsider Prob. 830. Using EES (or other) soft ware, investigate t...
- 8.832E: A well-insulated rigid tank contains 6 lbm of saturated liquidvapor...
- 8.833: An insulated pistoncylinder device contains 0.8 L of saturated liqu...
- 8.834: Reconsider Prob. 833. Using EES (or other) software, investigate th...
- 8.835: An insulated pistoncylinder device contains 0.03 m3 of saturated re...
- 8.836E: Oxygen gas is compressed in a pistoncylinder device from an initial...
- 8.837: A pistoncylinder device initially contains 2 L of air at 100 kPa an...
- 8.838: A 0.8-m3 insulated rigid tank contains 1.54 kg of carbon dioxide at...
- 8.839: An insulated pistoncylinder device initially contains 20 L of air a...
- 8.840: An insulated rigid tank is divided into two equal parts by a partit...
- 8.841E: A 70-lbm copper block initially at 2208F is dropped into an insulat...
- 8.842: An iron block of unknown mass at 858C is dropped into an insulated ...
- 8.843E: A 12-ft3 rigid tank contains refrigerant-134a at 30 psia and 55 per...
- 8.844: Stainless steel ball bearings (r 5 8085 kg/m3 and cp 5 0.480 kJ/kg8...
- 8.845: An ordinary egg can be approximated as a 5.5-cmdiameter sphere. The...
- 8.846: Chickens with an average mass of 1.6 kg and average specific heat o...
- 8.847: A pistoncylinder device initially contains 1.4 kg of refrigerant-13...
- 8.848: Refrigerant-134a at 1 MPa and 1008C is throttled to a pressure of 0...
- 8.849: Reconsider Prob. 848. Using EES (or other) software, investigate th...
- 8.850: Helium is expanded in a turbine from 1500 kPa and 3008C to 100 kPa ...
- 8.851: Air is compressed steadily by an 8-kW compressor from 100 kPa and 1...
- 8.852: Reconsider Prob. 851. Using EES (or other) software, solve the prob...
- 8.853: Air enters a nozzle steadily at 200 kPa and 658C with a velocity of...
- 8.854: Reconsider Prob. 853. Using EES (or other) software, study the effe...
- 8.855: Steam enters a diffuser at 10 kPa and 608C with a velocity of 375 m...
- 8.856E: Air is compressed steadily by a compressor from 14.7 psia and 608F ...
- 8.857: Argon gas enters an adiabatic compressor at 120 kPa and 308C with a...
- 8.858: Steam enters an adiabatic turbine at 6 MPa, 6008C, and 80 m/s and l...
- 8.859: Steam is throttled from 7 MPa and 5008C to a pressure of 1 MPa. Det...
- 8.860: Carbon dioxide enters a compressor at 100 kPa and 300 K at a rate o...
- 8.861: Combustion gases enter a gas turbine at 9008C, 800 kPa, and 100 m/s...
- 8.862: Refrigerant-134a enters an adiabatic compressor at 2308C as a satur...
- 8.863: Refrigerant-134a is condensed in a refrigeration system by rejectin...
- 8.864: Air enters the evaporator section of a window air conditioner at 10...
- 8.865E: Refrigerant-22 absorbs heat from a cooled space at 508F as it flows...
- 8.866: How much exergy is lost in a rigid vessel filled with 1 kg of liqui...
- 8.867E: A 40-ft3 adiabatic container is initially evacuated. The supply lin...
- 8.868E: What is the work potential of the air in the filled container of Pr...
- 8.869: Steam expands in a turbine steadily at a rate of 18,000 kg/h, enter...
- 8.870E: Air enters a compressor at ambient conditions of 15 psia and 608F w...
- 8.871: Hot combustion gases enter the nozzle of a turbojet engine at 230 k...
- 8.872: Steam is usually accelerated in the nozzle of a turbine before it s...
- 8.873: Ambient air at 100 kPa and 300 K is compressed isentropically in a ...
- 8.874: A 0.6-m3 rigid tank is filled with saturated liquid water at 1708C....
- 8.875: A 0.1-m3 rigid tank contains saturated refrigerant- 134a at 800 kPa...
- 8.876E: An insulated 260-ft3 rigid tank contains air at 40 psia and 1808F. ...
- 8.877: A vertical pistoncylinder device initially contains 0.12 m3 of heli...
- 8.878: An insulated vertical pistoncylinder device initially contains 15 k...
- 8.879: Consider a family of four, with each person taking a 6-minute showe...
- 8.880: Cold water (cp 5 4.18 kJ/kg8C) leading to a shower enters a well-in...
- 8.881: Outdoor air (cp 5 1.005 kJ/kg8C) is to be preheated by hot exhaust ...
- 8.882E: Steam is to be condensed on the shell side of a heat exchanger at 1...
- 8.883: Steam is to be condensed on the shell side of a heat exchanger at 1...
- 8.883: Air enters a compressor at ambient conditions of 100 kPa and 208C a...
- 8.884E: A hot-water stream at 1608F enters an adiabatic mixing chamber with...
- 8.885: Liquid water at 208C is heated in a chamber by mixing it with satur...
- 8.886E: A refrigerator has a second-law efficiency of 28 percent, and heat ...
- 8.887: Refrigerant-134a is expanded adiabatically in an expansion valve fr...
- 8.888: Steam enters an adiabatic nozzle at 3.5 MPa and 3008C with a low ve...
- 8.889: Steam is condensed in a closed system at a constant pressure of 75 ...
- 8.890: Refrigerant-134a is converted from a saturated liquid to a saturate...
- 8.891: An adiabatic heat exchanger is to cool ethylene glycol (cp 5 2.56 k...
- 8.892: A well-insulated, thin-walled, counter-flow heat exchanger is to be...
- 8.893: Hot exhaust gases leaving an internal combustion engine at 4008C an...
- 8.894: A crater lake has a base area of 20,000 m2 , and the water it conta...
- 8.895: The inner and outer surfaces of a 5-m 3 6-m brick wall of thickness...
- 8.896: A 1000-W iron is left on the ironing board with its base exposed to...
- 8.897: A 30-cm-long, 1500-W electric resistance heating element whose diam...
- 8.898: An adiabatic steam nozzle has steam entering at 300 kPa, 1508C, and...
- 8.899E: A steam turbine is equipped to bleed 6 percent of the inlet steam f...
- 8.8100: To control an isentropic steam turbine, a throttle valve is placed ...
- 8.8101: Two rigid tanks are connected by a valve. Tank A is insulated and c...
- 8.8102E: A pistoncylinder device initially contains 8 ft3 of helium gas at 4...
- 8.8103: Steam at 7 MPa and 4008C enters a two-stage adiabatic turbine at a ...
- 8.8104: Steam enters a two-stage adiabatic turbine at 8 MPa and 5008C. It e...
- 8.8105: A well-insulated 4-m 3 4-m 3 5-m room initially at 108C is heated b...
- 8.8106: Consider a well-insulated horizontal rigid cylinder that is divided...
- 8.8107: Repeat Prob. 8106 by assuming the piston is made of 5 kg of copper ...
- 8.8108E: Argon gas enters an adiabatic turbine at 13008F and 200 psia at a r...
- 8.8109: In large steam power plants, the feedwater is frequently heated in ...
- 8.8110: Reconsider Prob. 8109. Using EES (or other) software, investigate t...
- 8.8111: In order to cool 1 ton of water at 208C in an insulated tank, a per...
- 8.8112: One method of passive solar heating is to stack gallons of liquid w...
- 8.8113: A passive solar house that is losing heat to the outdoors at 58C at...
- 8.8114: Consider a 20-L evacuated rigid bottle that is surrounded by the at...
- 8.8115: A frictionless piston-cylinder device, shown in Fig. P8-115, initia...
- 8.8116: Two constant-pressure devices, each filled with 30 kg of air, have ...
- 8.8117: A constant-volume tank contains 30 kg of nitrogen at 900 K, and a c...
- 8.8118: A 100-L well-insulated rigid tank is initially filled with nitrogen...
- 8.8119: A 4-L pressure cooker has an operating pressure of 175 kPa. Initial...
- 8.8120: What would your answer to Prob. 8119 be if heat were supplied to th...
- 8.8121: Steam is to be condensed in the condenser of a steam power plant at...
- 8.8122: The compressed-air storage tank shown in Fig. P8122 has a volume of...
- 8.8123: The air stored in the tank of Prob. 8122 is now released through th...
- 8.8124: A constant-volume tank has a temperature of 600 K and a constant-pr...
- 8.8125E: In a production facility, 1.5-in-thick, 1-ft 3 3-ft square brass pl...
- 8.8126: In a dairy plant, milk at 48C is pasteurized continuously at 728C a...
- 8.8127: Combustion gases enter a gas turbine at 6278C and 1.2 MPa at a rate...
- 8.8128: Refrigerant-134a enters an adiabatic compressor at 120 kPa superhea...
- 8.8129: Water enters a pump at 100 kPa and 308C at a rate of 1.35 kg/s, and...
- 8.8130: Argon gas expands from 3.5 MPa and 1008C to 500 kPa in an adiabatic...
- 8.8131: Nitrogen gas enters a diffuser at 100 kPa and 1108C with a velocity...
- 8.8132: Obtain a relation for the second-law efficiency of a heat engine th...
- 8.8133: Writing the first- and second-law relations and simplifying, obtain...
- 8.8134: Writing the first- and second-law relations and simplifying, obtain...
- 8.8135: Writing the first- and second-law relations and simplifying, obtain...
- 8.8136: Heat is lost through a plane wall steadily at a rate of 800 W. If t...
- 8.8137: Liquid water enters an adiabatic piping system at 158C at a rate of...
- 8.8138: A heat engine receives heat from a source at 1500 K at a rate of 60...
- 8.8139: A water reservoir contains 100 tons of water at an average elevatio...
- 8.8140: A house is maintained at 218C in winter by electric resistance heat...
- 8.8141: A 12-kg solid whose specific heat is 2.8 kJ/kg8C is at a uniform te...
- 8.8142: Keeping the limitations imposed by the second law of thermodynamics...
- 8.8143: A furnace can supply heat steadily at a 1300 K at a rate of 500 kJ/...
- 8.8144: Air is throttled from 508C and 800 kPa to a pressure of 200 kPa at ...
- 8.8146: Obtain the following information about a power plant that is closes...
- 8.8147: Human beings are probably the most capable creatures, and they have...
- 8.8148: The domestic hot-water systems involve a high level of irreversibil...
- 8.8149: Consider natural gas, electric resistance, and heat pump heating sy...
- 8.8150: The temperature of the air in a building can be maintained at a des...

# Solutions for Chapter 8: EXERGY

## Full solutions for Thermodynamics: An Engineering Approach | 8th Edition

ISBN: 9780073398174

Solutions for Chapter 8: EXERGY

Get Full SolutionsThis textbook survival guide was created for the textbook: Thermodynamics: An Engineering Approach, edition: 8. Since 150 problems in chapter 8: EXERGY have been answered, more than 20027 students have viewed full step-by-step solutions from this chapter. This expansive textbook survival guide covers the following chapters and their solutions. Chapter 8: EXERGY includes 150 full step-by-step solutions. Thermodynamics: An Engineering Approach was written by and is associated to the ISBN: 9780073398174.