7-126 The maximum flow rate of a standard shower head is about 3.5 gpm (13.3 L/min) and can be reduced to 2.75 gpm (10.5 L/min) by switching to a love-flow shower head that is equipped with flow controllers. Consider a family of four, with each person taking a 6-minute shower every morning, City water at 15°C is heated to 55°C in an oil-fired water heater whose efficiency is 65 percent and then tempered to 42°C by cold water at the T-elbow of the shower before being routed to the shower head. The price of heating oil is $2.80/gal and its heating value is 146,300 kJ/gal. Assuming a constant specific heat of 4.18 kJ/kg "C for water, determine the amount of oil and money saved per year by replacing the standard shower heads with the low-flow ones 7-127 The drinking water needs of a production facility with 20 employees is to be met by a bubbler type water fountain The refrigerated water fountain is to cool water from 22 to 8C of the refrigeration system 2.9.
7-126 The maximum flow rate of a standard shower head is about 3.5 gpm (13.3 L/min) and can be reduced to 2.75 gpm (10.5 L/min) by switching to a love-flow shower head that is equipped with flow controllers. Consider a family of four, with each person taking a 6-minute shower every morning, City water at 15°C is heated to 55°C in an oil-fired water heater whose efficiency is 65 percent and then tempered to 42°C by cold water at the T-elbow of the shower before being routed to the shower head. The price of heating oil is $2.80/gal and its heating value is 146,300 kJ/gal. Assuming a constant specific heat of 4.18 kJ/kg "C for water, determine the amount of oil and money saved per year by replacing the standard shower heads with the low-flow ones 7-127 The drinking water needs of a production facility with 20 employees is to be met by a bubbler type water fountain The refrigerated water fountain is to cool water from 22 to 8C of the refrigeration system 2.9.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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help on 126.
Transcribed Image Text:7-126 The maximum flow rate of a standard shower head is about 3.5 gpm (13.3 L/min) and can be reduced to 2.75 gpm (10.5 L/min) by switching to a lowe-flow shower head that in
equipped with flow controllers. Consider a family of four, with each person taking a 6-minute shower every morning, City water at 15°C is heated to 55°C in an oil-fired water heater whose
efficiency is 65 percent and then tempered to 42°C by cold water at the T-elbow of the shower before being routed to the shower head. The price of heating oil is $2.80/gal and its heating
value is 146,300 kJ/gal. Assuming a constant specific heat of 4.18 kJ/kg "C for water, determine the amount of oil and money saved per year by replacing the standard shower heads with the
low-flow ones
7-127 The drinking water needs of a production facility with 20 employees is to be met by a bubbler type water fountain The refrigerated water fountain is to cool water from 22 to 8C
the
the 20 of the refrigeration system a 29.
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