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Steam at 260 °C and 7 bar absolute is expanded through a nozzle to 200 °C and 4 bar absolute. Negligible heat is transferred from the nozzle to its surroundings. The entering velocity of the steam is also negligible. The specific enthalpy of steam is 2,974 kJ/kg at 260 "C and 7 bar and 2,860 kJ/kg at 200 °C and 4 bar. Sketch a diagram to represent the process and use the open-system energy balance to calculate the exit steam velocity.

Steam at 260 °C and 7 bar absolute is expanded through a nozzle to 200 °C and 4 bar absolute. Negligible heat is transferred from the nozzle to its surroundings. The entering velocity of the steam is also negligible. The specific enthalpy of steam is 2,974 kJ/kg at 260 "C and 7 bar and 2,860 kJ/kg at 200 °C and 4 bar. Sketch a diagram to represent the process and use the open-system energy balance to calculate the exit steam velocity.

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Steam at 260 °C and 7 bar absolute is expanded through a nozzle to 200 °C and 4 bar absolute. Negligible heat is transferred from the nozzle to its surroundings. The entering velocity of the steam is also negligible. The specific enthalpy of steam is 2,974 kJ/kg at 260 °C and 7 bar and 2,860 kJ/kg at 200 °C and 4 bar. Sketch a diagram to represent the process and use the open-system energy balance to calculate the exit steam velocity.
Transcribed Image Text:Steam at 260 °C and 7 bar absolute is expanded through a nozzle to 200 °C and 4 bar absolute. Negligible heat is transferred from the nozzle to its surroundings. The entering velocity of the steam is also negligible. The specific enthalpy of steam is 2,974 kJ/kg at 260 °C and 7 bar and 2,860 kJ/kg at 200 °C and 4 bar. Sketch a diagram to represent the process and use the open-system energy balance to calculate the exit steam velocity.
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