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Calculate the amount of natural gas required to heat the water in a heater.

Answer to Problem 41P
The amount of natural gas required to heat the water in a heater is
Explanation of Solution
Given data:
Volume of water used per day is
Initial temperature of water is,
Final temperature of water is,
Efficiency of heater is
From Table 11.13 in the textbook, the specific heat of water is,
Standard density of water is
Formula used:
The relationship between degree Fahrenheit and degree Celsius is,
Here,
The formula to find thermal energy required to heat the water is,
Here,
Calculation:
Convert the unit of volume of the water,
Substitute
Substitute
The expression to find the mass of the water is,
Substitute
The unit conversion on above result is,
Do the unit conversion on above result,
At standard
Then the amount of natural gas required to heat the water in heater can be determined from the below expression:
Therefore, the amount of natural gas required to heat the water in a heater is
Conclusion:
Hence, the amount of natural gas required to heat the water in a heater is
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Chapter 11 Solutions
WebAssign Homework Only for Moaveni's Engineering Fundamentals: An Introduction to Engineering, SI Edition, 6th Edition, [Instant Access]
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