WORKING WITH CO2 SUPERMARKETSANDY CAMPBELL
Presentation Format
Background
The future
Our journey
New System
Background
Reduce carbon footprint by 50% based
on 2006
Measured Carbon Footprint
19%
12%
7%2%
60%REFRIGERANTDIESEL / OILNATURAL GASBUSINESS TRAVELGRID ELECTRICTY
19%
12%
7%2%36%
24%
REFRIGERANTDIESELNATURAL GASBUSINESS TRAVELGRID ELECTRICTYGRID ELECTRICTY REFRIGERATION
=43%Carbon Footprint
Our Journey
SWANSEA2 TRIALS 2 SYSTEMS FIRST IN COUNTRY 2006
TRANSCRITICAL SYSTEM
CAPACITY 38KWR-744
CASCADE SYSTEM CAPACITY 15KW
R-290/R-744
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
Shrewsbury 2007
344 kW H.T. 69 kW L.T.
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
CHEETHAM HILL TRANSCRITICAL 2008
FULL ENVIRONMENTAL STORE
TRANSCRITICAL SYSTEMS WITH DOORS
ON CHILL CASES
TRANSCRITICAL SYSTEMS 320KW H.T.80KW L.T.
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
New System Required
Develop a natural refrigerant solution fit for
retrofit and roll out system must reduce the existing system style installation
by 70%(TEWI)
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
NEW SOLUTION
NEW TESCO SOLUTION
H.T. SYSTEM
L.T. SYSTEM
Plant Design Findings• Fade out
• Variable load
• Compressor protection
• Insensitive to charge
• Repeatable
• Easy service
• Resilient
• Training still required
Cost Comparison
0
136.667
273.333
410.000
Costs
Cheetham HillNew Solution
22% REDUCTION
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
0
150
300
450
600
TEWI
R404ACO2
75% Reduction
TEWI
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
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)
IMPLEMENTATION PLAN(so far)
• Install 6 systems 09/10
• Install 20-30 systems 10/11
• Install 150 systems 11/12
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
Thank You for ListeningGo Raibh Mile Maith Agut Beith
Ag Eisteacht Liom