Problems 5-1 Stead flow of steam enters a condenser with an enthalpy of 2400 kJ/kg and a velocity of 366 m/sec. the condensate leaves the condenser with an enthalpy of 162kJ/sec and a velocity of 6 m/sec what is the heat transferred to the cooling water per kg steam condensed. (-69198 kJ/kg) 5-2 An air compressor delivers 4.5 kg of air per minute at a pressure of 7 bar and a specific volume of 0.17 m³ /kg. Ambient conditions are pressure 1bar and specific volume 0.86 m³/kg. The initial and final internal energy values for the air are 28 kJ/kg and 110 kJ/kg respectively. Heat rejected to the cooling jacket is 76kJ/kg of air pumped. Neglecting changes in kinetic and potential energies, what is the shaft power required driving the compressor? (14.3kW)
Problems 5-1 Stead flow of steam enters a condenser with an enthalpy of 2400 kJ/kg and a velocity of 366 m/sec. the condensate leaves the condenser with an enthalpy of 162kJ/sec and a velocity of 6 m/sec what is the heat transferred to the cooling water per kg steam condensed. (-69198 kJ/kg) 5-2 An air compressor delivers 4.5 kg of air per minute at a pressure of 7 bar and a specific volume of 0.17 m³ /kg. Ambient conditions are pressure 1bar and specific volume 0.86 m³/kg. The initial and final internal energy values for the air are 28 kJ/kg and 110 kJ/kg respectively. Heat rejected to the cooling jacket is 76kJ/kg of air pumped. Neglecting changes in kinetic and potential energies, what is the shaft power required driving the compressor? (14.3kW)
Solid Waste Engineering
3rd Edition
ISBN:9781305635203
Author:Worrell, William A.
Publisher:Worrell, William A.
Chapter7: Thermal Processes
Section: Chapter Questions
Problem 7.1P
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Transcribed Image Text:Problems
5-1 Stead flow of steam enters a condenser with an enthalpy of 2400 kJ/kg and a velocity of
366 m/sec. the condensate leaves the condenser with an enthalpy of 162kJ/sec and a
velocity of 6 m/sec what is the heat transferred to the cooling water per kg steam
condensed.
(-69198 kJ/kg)
5-2 An air compressor delivers 4.5 kg of air per minute at a pressure of 7 bar and a
specific volume of 0.17 m³ /kg. Ambient conditions are pressure 1bar and specific
volume 0.86 m³/kg. The initial and final internal energy values for the air are 28 kJ/kg
and 110 kJ/kg respectively. Heat rejected to the cooling jacket is 76kJ/kg of air
pumped. Neglecting changes in kinetic and potential energies, what is the shaft power
required driving the compressor?
(14.3kW)
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