drought busting and carbon crushing technologies in food service kong sham june 17, 2014 fisher...
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![Page 1: Drought Busting and Carbon Crushing technologies in Food Service Kong Sham June 17, 2014 Fisher Nickel Inc. Food Service Technology Center Presented by:](https://reader030.vdocuments.net/reader030/viewer/2022032606/56649eb65503460f94bbfadb/html5/thumbnails/1.jpg)
Drought Busting and Carbon
Crushing technologies in Food ServiceKong Sham
June 17, 2014Fisher Nickel Inc.
Food Service Technology Center
Presented by:
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Drought Busting and Carbon Crushing Ideas for University
Dining
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There is a synergy between water and energy use in the
kitchen.
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For example, the way water drives energy use in the
dishroom.
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Or, the water used for process and cooling.
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Water Costs California
Source: Amin Delagah, FSTC – Water Utility Survey
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Monitoring in a Medium-Sized Hotel
•Existing 86” Dishwasher: Operator spent $3,000 to
tune-up dishwasher. •Technicians missed 9,000
gal/d leak.•Conveyor rinse pressure regulator was not working,
using an extra 1 gpm. •Need for sub-metering on the
rinse and fill.•Need for smart water meters.
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Tadich Grill, San Francisco
Pre-Retrofit Dishwasher and
Boiler System
Post-Retrofit Dishwasher and
Boiler System
Post-Retrofit Normalized to
racks/day
Daily Average Data
2/14/2011 - 8/30/2011
4/13/2012 - 5/3/2012
4/13/2012 - 5/3/2013
Mass Weighted Temp In (°F) 57 58 58Mass Weighted Temp Out (°F) 158 182 182Temperature Rise (°F) 101 124 124Wash Tank Fill (gal/d) 194 91 91Dishwashing hot water usage (gal/day) 2575 1009 945Total Dishwasher Water Use (gal/d) 2769 1100 1036Measured Dishwasher flow rate (gpm) 9.2 3.88 3.88Measured Boiler Gas Input for dishwasher 2,946,216 3,613,024 3,613,024Calculated (Racks/d) 975 1040 975Water savings (gal/d) 1733Water savings (hcf) 723Natural gas Savings/year (Therms) 7045
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Hilton Double Tree Hotel in Fremont
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This Retrofit of a Dishwasher Cost $42,500accompanied with a
$15,950 Rebate from PG&E. First Year energy Savings were
$38,980
In total: the Retrofit had a payback of 1 year!
Savings based on $5/unit, $0.17/kWh, $1.00/therm
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Boiler-Based Steamer
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Boilerless Steamer
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http://www.fishnick.com/publications/fieldstudies/Connectionless_Steamer_Field_Study_%28revised
%29.pdf
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19http://fishnick.com/saveenergy/tools/calculators/gsteamercalc.php
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This Amounts to $3,663 in annual savings
an ROI of 35%!
Savings based on $5/unit and $0.13/kWh for Universities
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Combination Ovens use Boilers Too!
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Sometimes when you don’t expect it!
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Install Low Flow Pre-Rinse Spray Valves
4.5 gpm 1.6 gpm 1.4 gpm 1.15 gpm 0.64 gpm$0
$400
$800
$1,200
$1,600
Example: Annual Cost to Operate
1 hr of usage per day @ $1.00/therm & $5.00/Hcf
$1,200 a year savings
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Online Pre-Rinse Spray Valve Calculator
www.fishnick.com/savewater/tools/watercalculator/
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No-flow Pre-rinse Spray Valve!
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The Food Service Technology Center (FSTC) program is funded by California utility customers
with public purpose program (PPP) funds and administered by the Pacific Gas and Electric
Company under the auspices of the California Public Utilities Commission.
Promoting:
Energy Efficiency in Commercial Food Service
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