Properties of pure substances Remember that since they are pure supstances, you must iook ior the properties in the Thermodynamic tables that correspond to the substance you are analyzing, so you must always have your tables when solving the exercises. a) A closed system to be analyzed contains water initially at 120 °C, 198.67 kPa as a saturated liquid. If water changes state in a thermodynamic process to saturated steam, determine its final internal energy. b) In a thermodynamic system to be analyzed, there is refrigerant 134a initially at 10 °C, 320 kPa. If a thermodynamic process is developed where the final state of the refrigerant is - 10°C and 200.74 kPa with 60% steam quality, determine its final enthalpy. c) In a thermodynamic system to be analyzed, there is water initially at 350 °C, 2000 kPa. If the water changes state in an isobaric process up to 225°C, determine its final entropy. d) Find the enthalpy change of water during the phase change from saturated liquid to saturated vapor at 175 kPa and 486.82 kJ/kg internal energy. It is: e) Find the enthalpy change of water during the phase change from saturated liquid to saturated vapor at 275 kPa and 130.58 °C. It is:
Properties of pure substances Remember that since they are pure supstances, you must iook ior the properties in the Thermodynamic tables that correspond to the substance you are analyzing, so you must always have your tables when solving the exercises. a) A closed system to be analyzed contains water initially at 120 °C, 198.67 kPa as a saturated liquid. If water changes state in a thermodynamic process to saturated steam, determine its final internal energy. b) In a thermodynamic system to be analyzed, there is refrigerant 134a initially at 10 °C, 320 kPa. If a thermodynamic process is developed where the final state of the refrigerant is - 10°C and 200.74 kPa with 60% steam quality, determine its final enthalpy. c) In a thermodynamic system to be analyzed, there is water initially at 350 °C, 2000 kPa. If the water changes state in an isobaric process up to 225°C, determine its final entropy. d) Find the enthalpy change of water during the phase change from saturated liquid to saturated vapor at 175 kPa and 486.82 kJ/kg internal energy. It is: e) Find the enthalpy change of water during the phase change from saturated liquid to saturated vapor at 275 kPa and 130.58 °C. It is:
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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