Basic HTML Version

October 2012

4-27

Where:

••

Flow Rate of Rinse or Reservoir Spout (gallons per minute)

••

Daily Use Time (minutes per day)

••

Days of Facility Operation (days per year)

Water Use After Retrofit

To estimate the water use of more efficient rinse and reservoir spouts, use Equation

4-9,

substituting the flow rate and use time of the retrofit rinse and reservoir spouts.

Water Savings

To calculate the water savings from the retrofit of an existing wok stove with more ef-

ficient rinse and reservoir spouts, identify the following information and use Equation

4-10:

••

Current water use as calculated using Equation 4-9.

••

Water use after retrofit using Equation 4-9.

Where:

••

Current Water Use of Wok Stove Rinse and Reservoir Spouts (gallons

per year)

••

Water Use of Wok Stove After Retrofit of Rinse and Reservoir Spouts

(

gallons per year)

Payback

To calculate the simple payback from the water savings associated with retrofitting

an existing wok stove with more efficient rinse and reservoir spouts, consider the

equipment and installation cost of the retrofit rinse and reservoir spouts, the water

savings as calculated using Equation 4-10, and the facility-specific cost of water and

wastewater.