The maximum flow rate of a standard shower head is about 3.9 gpm (14.8 L/min) and can be reduced to 2.75 gpm (10.5 Lmin...
The maximum flow rate of a standard shower head is about 3.9 gpm (14.8 L/min) and can be reduced to 2.75 gpm (10.5 Lmin) by switching to a low-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 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 $2.80/gal and its heating value is 146,300 kJigal Assuming a constant specific heat of 4.18 kJ/kg.°C for water, determine the amount of oil and money saved per year by replacing the standard shower heads by the low-flow ones. (Round the final answers to one decimal place.) The amount of oil saved per year is gal/year The amount of money saved per year is$ year.
The maximum flow rate of a standard shower head is about 3.9 gpm (14.8 L/min) and can be reduced to 2.75 gpm (10.5 Lmin) by switching to a low-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 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 $2.80/gal and its heating value is 146,300 kJigal Assuming a constant specific heat of 4.18 kJ/kg.°C for water, determine the amount of oil and money saved per year by replacing the standard shower heads by the low-flow ones. (Round the final answers to one decimal place.) The amount of oil saved per year is gal/year The amount of money saved per year is$ year.