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8.11 A 60 m room is heated by a thermal energy storage system. The room air originally is at 12 °C and 100 kPa. The room loses heat at a rate of 0.2 kJ/s. If the thermal energy storage system supplies 0.8 kW estimate the time nec- essary for the room temperature to reach 22 °C. 8.12 A superheated steam at a rate of 0.6 lb/s flows through a heater. The steam is at 100 psia and 380 °F. If a heat storage system supplies 37.7 Btu/s into the steam at constant pressure estimate the final temperature of the steam. 8.13 A superheated steam at a rate of 0.9 lb/s flows through a heater. The steam is

8.11 A 60 m room is heated by a thermal energy storage system. The room air originally is at 12 °C and 100 kPa. The room loses heat at a rate of 0.2 kJ/s. If the thermal energy storage system supplies 0.8 kW estimate the time nec- essary for the room temperature to reach 22 °C. 8.12 A superheated steam at a rate of 0.6 lb/s flows through a heater. The steam is at 100 psia and 380 °F. If a heat storage system supplies 37.7 Btu/s into the steam at constant pressure estimate the final temperature of the steam. 8.13 A superheated steam at a rate of 0.9 lb/s flows through a heater. The steam is

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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8.11 A 60 m' room is heated by a thermal energy storage system. The room air originally is at 12 °C and 100 kPa. The room loses heat at a rate of 0.2 kJ/s. If the thermal energy storage system supplies 0.8 kW estimate the time nec- essary for the room temperature to reach 22 °C. 8.12 A superheated steam at a rate of 0.6 lb/s flows through a heater. The steam is at 100 psia and 380 °F. If a heat storage system supplies 37.7 Btu/s into the steam at constant pressure estimate the final temperature of the steam. 8.13 A superheated steam at a rate of 0.9 lb/s flows through a heater. The steam is at 100 psia and 380 °F. If a heat storage system supplies 25.4 Btu/s into the
Transcribed Image Text:8.11 A 60 m' room is heated by a thermal energy storage system. The room air originally is at 12 °C and 100 kPa. The room loses heat at a rate of 0.2 kJ/s. If the thermal energy storage system supplies 0.8 kW estimate the time nec- essary for the room temperature to reach 22 °C. 8.12 A superheated steam at a rate of 0.6 lb/s flows through a heater. The steam is at 100 psia and 380 °F. If a heat storage system supplies 37.7 Btu/s into the steam at constant pressure estimate the final temperature of the steam. 8.13 A superheated steam at a rate of 0.9 lb/s flows through a heater. The steam is at 100 psia and 380 °F. If a heat storage system supplies 25.4 Btu/s into the
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