
Concept explainers
The amount of oil a family of four will save per year by replacing the standard shower heads by the low-flow ones.
The amount of money a family of four will save per year by replacing the standard shower heads by the low-flow ones.

Answer to Problem 139RP
The amount of oil a family of four will save per year by replacing the standard shower heads by the low-flow ones is
The amount of money a family of four will save per year by replacing the standard shower heads by the low-flow ones is
Explanation of Solution
Determine the rate of water saved volume of the low-flow shower head a family of four will save per year.
Here, the initial volume of the low-flow shower head is
Determine the mass flow rate of water of the low-flow shower head.
Here, the density of water is
Determine the amount of energy saved in the low-flow shower head.
Here, the specific heat of water is
Determine the amount fuel saved in the low-flow shower head.
Here, the efficiency of the fuel in the low-flow shower head is
Determine the amount of money saved in the low-flow shower head.
Conclusion:
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Thus, the amount of oil a family of four will save per year by replacing the standard shower heads by the low-flow ones is
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Thus, the amount of money a family of four will save per year by replacing the standard shower heads by the low-flow ones is
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Chapter 6 Solutions
Thermodynamics: An Engineering Approach
- Refrigeration and Air Conditioning Technology (Mi...Mechanical EngineeringISBN:9781305578296Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill JohnsonPublisher:Cengage Learning
