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

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