A fully mixed water tank storage containing 1500 kg of water has a loss coefficient-area product of 11.1 W'C and is located in a room at 20°C. At the beginning of a particular hour the tank temperature is 65.0°C. During the hour energy Qu is added to the tank from a solar collector, and energy Ls is removed from the tank and delivered to a load as indicated in the table. A calculation of the solar gain Qu and using of load energy Ls in MJ are shown in the table below. Calculate the temperature of the tank at the end of each

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Author:Kreith, Frank; Manglik, Raj M.
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Chapter2: Steady Heat Conduction
Section: Chapter Questions
Problem 2.21P
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A fully mixed water tank storage containing 1500 kg of water has a loss coefficient-area
product of 11.1 WIC and is located in a room at 20°C. At the beginning of a particular
hour the tank temperature is 65.0-C. During the hour energy Qu is added to the tank from
a solar collector, and energy Ls is removed from the tank and delivered to a load as
indicated in the table. A calculation of the solar gain Qu and using of load energy Ls in MJ
are shown in the table below. Calculate the temperature of the tank at the end of each
hour.
hr
Qu MJ
Ls MJ
Ts
Ts*
12
65
?
10
12
?
?
3
10
12
?
?
4
12
?
?
Transcribed Image Text:A fully mixed water tank storage containing 1500 kg of water has a loss coefficient-area product of 11.1 WIC and is located in a room at 20°C. At the beginning of a particular hour the tank temperature is 65.0-C. During the hour energy Qu is added to the tank from a solar collector, and energy Ls is removed from the tank and delivered to a load as indicated in the table. A calculation of the solar gain Qu and using of load energy Ls in MJ are shown in the table below. Calculate the temperature of the tank at the end of each hour. hr Qu MJ Ls MJ Ts Ts* 12 65 ? 10 12 ? ? 3 10 12 ? ? 4 12 ? ?
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