Page 112 - WaterSense at Work

4-18 October 2012
4.4 Steam Cookers
Equation 4-6. Water Savings From Steam Cooker Replacement (gallons per year)
= Current Water Use of Steam Cooker –Water Use of Steam Cooker After
Replacement
Where:
••Current Water Use of Steam Cooker (gallons per year)
••Water Use of Steam Cooker After Replacement (gallons per year)
Payback
To calculate the simple payback from the water savings associated with replacing an
existing steam cooker, consider the equipment and installation cost of the ENERGY
STAR qualified steam cooker, the water savings as calculated in Equation 4-6, and the
facility-specific cost of water and wastewater.
By switching to an ENERGY STAR qualified steam cooker, facilities can also save a
significant amount of energy. ENERGY STAR qualified steam cookers can use half as
much energy as standard steam cookers.32 This energy savings will further reduce the
payback period and increase replacement cost-effectiveness.
Additional Resources
Alliance for Water Efficiency. Food Steamers Introduction.
www.allianceforwaterefficiency.org/1Column.aspx?id=642&terms=steam.
East Bay Municipal Utility District. 2008. WaterSmart Guidebook—A Water-Use
Efficiency Plan Review Guide for New Businesses. Pages FOOD7-8. www.ebmud.com/
for-customers/conservation-rebates-and-services/commercial/watersmart-
guidebook.
EPA and DOE’s ENERGY STAR. Commercial Steam Cookers. www.energystar.gov/
index.cfm?fuseaction=find_a_product.showProductGroup&pgw_code=COC#buying.
Food Service Technology Center (FSTC). Commercial Foodservice Equipment Life-
cycle Cost Calculators. www.fishnick.com/saveenergy/tools/calculators/.
FSTC. Steamers. www.fishnick.com/savewater/appliances/steamers/.
32 EPA and DOE’s ENERGY STAR. Commercial Steam Cookers, op. cit.