Attachment 2 Water and Energy Savings and Green House Gas Calculations

Attachment 2 – Water and Energy Savings and Green House Gas Calculations

West Basin’s Cash for Kitchens (C4K) Program (Program) will help reduce Greenhouse Gas (GHG) emissions and conserve both water and energy. West Basin used the approved Quantification Methodology, ARB’s GHG Calculator Tool, to estimate GHG emission reductions, energy savings, and water savings for the program. Below are the final estimated savings that will be achieved through the implementation of the Program:

Water Savings

Through this Program, West Basin is seeking to conserve 646 Acre-Feet of water over the life of the devices described in the Program, with an annual water savings of over 75 Acre-Feet per year.

Energy Savings (KWh and Therms)

By directly installing 150 Air Cooled Ice Machines, 1,000 Faucet Flow Restrictors, and 400 Pre-Rinse Spray Valves, along with assisting at least 20 facilities with connectionless steam cooker rebate applications, this Program will conserve over 34,000 megawatt hours of energy and 1,128,000 therms over the entire Program life.

GHG Savings

Calculations show that 6,570Metric Tons of Carbon Dioxide Equivalent can be saved through this Program. The GHG savings were calculated using the ARB’s GHG Reduction Calculator for the Department of Water Resource’s Water-Energy Grant Program.

ARB GHG Calculator Tool – Changes to Default Values

The following default values were changed in the ARB’s GHG Calculator Tool to arrive at the water, energy, and GHG emissions reductions calculated for this Program. Explanations for the changes are included below, and supporting documents for device specifications are included in the pages that follow.

Com. Ice Machine Calcs (All calculations are for Batch-type units)

Self Contained Unit (1)

Potable Water Use (1)

Default Value = 19.5 gallons / 100 lbs ice

New Value = 21.6 gallons / 100 lbs ice (from Ice Machine Spec Sheet 1)

Energy Consumption Rate (Energy Star)

Default Value = 9.2 kWh / 100 lbs ice

New Value = 8.3 kWh / 100 lbs ice (from Ice Machine Spec Sheet 1)

Ice Making Head (1)

Potable Water Use (1)

Default Value = 18.3 gallons / 100 lbs ice

New Value = 18.0 gallons / 100 lbs ice (from Ice Machine Spec Sheet 3)

Energy Consumption Rate (EnergyStar)

Default Value = 6.3 kWh / 100 lbs ice

New Value = 6.5 kWh / 100 lbs ice (from Ice Machine Spec Sheet 3)

Ice Harvest Rate (1)

Default Value = 650 lbs ice/day

New Value = 400 lbs ice / day (from Ice Machine Spec Sheet 2)

Com. Pre-Rinse Spray Valve Calcs

PRSV (1)

Flow Rate

Default Value = 1.28 gallons per minute

New Value = 1.10 gallons per minute (based on the devices selected for this Program)

Conventional Flow Rate

Default Value = 1.6 gallons per minute

New Value = 2.0 gallons per minute (based on typical flow rates encountered at previous Cash for Kitchens surveys)

Com. Faucet Calcs

Faucet (1)

Number of Employees

New Value = 6 Employees (To account for average employees in kitchens)

Number of Bathroom / Faucet Visits per Employee per Day

New Value = 10 visits (To account for average kitchen faucet use by employees)

Com. Steam Cooker Calcs

Natural Gas

Number of pans per unit (1)

Default Value = 6 pans / unit

New Value = 3 pans / unit (Based on Connectionless Steamer Spec Sheet 1)

Ice Machine Spec Sheet 1 – Manitowoc Undercounter Example Unit Specifications

Ice Machine Spec Sheet 2 – Scotsman Ice Making Head Example Unit Specifications (1/2)

Ice Machine Spec Sheet 3 – Scotsman Ice Making Head Example Unit Specifications (2/2)

Connectionless Steamer Spec Sheet 1 – Vulcan C24EO3 Example Unit Specifications