working with co2 supermarkets · grid electricty refrigeration =43% carbon footprint. our journey ....
TRANSCRIPT
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WORKING WITH CO2 SUPERMARKETSANDY CAMPBELL
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Presentation Format
Background
The future
Our journey
New System
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Background
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Reduce carbon footprint by 50% based
on 2006
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Measured Carbon Footprint
19%
12%
7%2%
60%REFRIGERANTDIESEL / OILNATURAL GASBUSINESS TRAVELGRID ELECTRICTY
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19%
12%
7%2%36%
24%
REFRIGERANTDIESELNATURAL GASBUSINESS TRAVELGRID ELECTRICTYGRID ELECTRICTY REFRIGERATION
=43%Carbon Footprint
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Our Journey
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SWANSEA2 TRIALS 2 SYSTEMS FIRST IN COUNTRY 2006
TRANSCRITICAL SYSTEM
CAPACITY 38KWR-744
CASCADE SYSTEM CAPACITY 15KW
R-290/R-744
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WICK SCOTLAND TRANSCRITICAL 2006
8.5KW AIR COOLED
CONDENSING UNIT CHILL ROOM
11.9 KW WATER COOLED CONDENSING
UNIT CHILL ROOMTESTED FOR DOT-COM FEASIBILITY
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Shrewsbury 2007
344 kW H.T. 69 kW L.T.
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60% Reduction in Energy.Doors on cases. Heat-Reclaim
.CO2 Transcritical 50% Reduction in T.E.W.I
Hinckley 2007Convenience store trial
Transcritical system 50kW with underfloor
heating
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CHEETHAM HILL TRANSCRITICAL 2008
FULL ENVIRONMENTAL STORE
TRANSCRITICAL SYSTEMS WITH DOORS
ON CHILL CASES
TRANSCRITICAL SYSTEMS 320KW H.T.80KW L.T.
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Findings
• Easy to install
• Cascade systems too fragile
• Larger tested systems not suitable for roll-out
• High costs
• Lack skill and knowledge in contract base
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New System Required
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Develop a natural refrigerant solution fit for
retrofit and roll out system must reduce the existing system style installation
by 70%(TEWI)
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Design & Evaluation • Evaluate against design criteria
• Simpler, better, cheaper !
• Easy to replace existing estate with new system
• Easy to learn for service and install
• Repeatable
• Safe
• Within bylaws
• Maintainable
• Standard
• 15 year life span
• Evaluate thermodynamically & environmentally
• System must be a low carbon solution
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NEW SOLUTION
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NEW TESCO SOLUTION
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H.T. SYSTEM
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L.T. SYSTEM
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Plant Design Findings• Fade out
• Variable load
• Compressor protection
• Insensitive to charge
• Repeatable
• Easy service
• Resilient
• Training still required
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Cost Comparison
0
136.667
273.333
410.000
Costs
Cheetham HillNew Solution
22% REDUCTION
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77%
8%
15%
69%
8%
23%
ComponentsMaterialsLabour
H.T. Pack
L.T. Pack
Indicative Costs
•Labour and material costs on a par with existing R404A NRC packs
Great opportunity on component cost:
•Bulk buying/price agreements with component manufacturers
•Competition between pack builders (and through their established supply routes
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0
150
300
450
600
TEWI
R404ACO2
75% Reduction
TEWI
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Training • Develop a two fold learning approach
✦Firstly theory from the E-learning system
✦Secondly a practical on the systems
✦All sections will have an exam and pass
mark
✦All refrigeration mechanics will have to pass
before working on our systems
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Training Cont.
•A passport system will be put in place to make
sure only qualified personnel work on system
•We will work with City and Guilds to develop a
national CO2 Refrigeration qualification (ready Dec
2009)
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IMPLEMENTATION PLAN(so far)
• Install 6 systems 09/10
• Install 20-30 systems 10/11
• Install 150 systems 11/12
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Conclusions• CO2 components are available for
transcritical operation
• This offers advantages over cascade operation
• Efficient operation
• Heat recovery options
• Some new techniques are required
• We are restricted by the industry’s capacity
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Thank You for ListeningGo Raibh Mile Maith Agut Beith
Ag Eisteacht Liom