Energy Efficiency Forum
Colin Devenish
April 2013
PRESENTATION OVERVIEW
•
Overview of Precinct
•
V&A projects
•
Tenant education & Case study
•
Achievements to date
•
New developments
IT ALWAYS SEEMS IMPOSSIBLE UNTIL IT’S DONE
Nelson Mandela
“The historic docklands around the Victoria and Alfred Basins in Cape Town should be redeveloped
as a mixed use area, focusing on tourism and residential development, and most importantly,
retaining the working harbour in operation”
– Burggraaf Committee 1987
THE V&A WATERFRONT – KEY FACTS
Over 123 hectares (300 acres – or 80 rugby fields)
Some 16,000 people work within
Over 450 stores with 80 restaurants and eateries
10 hotels and a range of office, retail, industrial & residential buildings
Over 23 million visitors per annum – most visited attraction
The V&A Waterfront has undertaken energy saving projects in
excess of R30 million, and these include:
•
Installation of lighting controls
•
Installation of energy efficient lighting and repositioning/relocating of light fittings
•
Upgraded Air Conditioning BMS
•
Installation of new chillers with higher COP’s, variable speed drives on pumps and
motors
•
Replace Air handling Units & include economy cycle
•
Installation of meters and development of credible metering and billing systems
OTHER INITIATIVES:
•
Benchmarked and identified areas requiring attention
•
Included targets in Staff Performance Contracts
•
Established Sustainability Committee and registered with Heritage Environmental
Rating Programme – Achieved Gold Rating
POWER FACTOR CORRECTION AND
AIR CONDITIONING CONTROLS
Installation of Power Factor Correction
•
Reduced Maximum Demand.
•
Weekly inspection of substations in order
•
to identify possible problems and installed remote
•
monitoring.
•
Spent R180k in 2008 – Payback ± 2 years.
•
Spent R80k in 2009 – Payback ± 3 years.
Air Conditioning Controls
•
Changed operating times according to seasons and outside weather
conditions. Immediate results of R50k/month.
•
Control of chilled water temperature – between 6 and 9 °C. Control chilled
water temperature versus cooling and then reheating.
•
Currently installing additional controls: 3 year programme.
LIGHTING AND CONTROL SYSTEM
3.
Installed efficient lighting
•
Phase 1 - 2008: R3.2 million. Installation of energy efficient lighting and control system.
Pay back period on 2008 tariffs – 20 months.
•
Phase 2: R2 426 263.93. Initial pay back period of 5.27 years. Installation of more
efficient lighting as well as upgrading of lighting levels.
•
Installed / upgraded control system.
Reduced maintenance costs – longer life lamps, bulk replacement with guarantees, no
need to paint ceiling, etc.
LIGHTING INITIATIVES
Original 50W
low voltage
downlighter
New 1W LED
cone
downlighter
Before:
After:
• 3 x 50W low voltage downlighters
• Total : 150W
• Lamp life ± 1000 hours
• 3 x 1W LED cone downlighters
• Total : 3W
• Lamp life of 50 000 hours
Before and
After light
levels.
Original 50W
down lighter
Original 2 x 13W
compact fluorescents
New 1W LED
down lighter
New 2 x 26W compact
fluorescents
2009 = 513 Watt
Before = 1 910 Watt
New 2 x 26W compact
fluorescents
New 1 x 18 W LED
2013 = 213 Watt
LIGHTING INITIATIVES
8.5 m = 150 W
8.5 m = 5-6
light fittings =
348 W
LIGHTING INITIATIVES
Before:
2 x 58W parking fittings = 15 fittings
Total = 1 740 W
After:
2 x 58W parking fittings = 8 fittings
7 fittings removed
New load = 928 W
AIR CONDITIONING
Current Project – R15 Million – Completed
November 2009
• Replace 4 x screw chillers with 2 x Centrifugal
chillers - 25% saving in electricity
• Part of normal end of life replacement
• Improve controls and introduce more fresh air
control
• Moving from a constant volume to variable
volume system – Variable speed drives on air
handling units, Variable volume diffusers
This is a first generation Chiller with a low
co-efficient of performance (COP of 4).
Installing new centrifugal Chillers with COP
of 7. This has lead to significant electricity
saving.
ENERGY SAVING INITIATIVES
Plant Room
No. 1
Plant Room No.
2
• We had independent Chiller Plant Rooms
• We are moving to a District Cooling philosophy
• This will also lead to significant energy savings
• Reduces overall redundancy and improves flexibility
ENERGY SAVING INITIATIVES
Cleaning of Filters and Coils of Air
Handling Units:
• Improves air flow
• Reduces power
• V&A now uses ISO 14001 rated
chemicals and not harmful acids
• Improves lifespan of equipment
RESULTS OF INSTALLING NEW CHILLERS
AND IMPROVED AIR CONDITIONING CONTROLS
LIFTS & ESCALATORS
ESCALATORS:
Consumption of current escalators:12.4kW/h.
Savings to be achieved with installation of
4 x new Schindler escalators to be installed
in 2013:
Schindler escalators
10,0 kW
A saving of 4 608kwh/month @ 45c/kWh
= R2 074/month or R24 883/year.
UPGRADED / REPLACED 3 X LIFTS IN 2009
Replaced equipment due to end-of-life.
Total consumption of 3 x lifts from 2nd lowest tenderer = 6kW/h vs. consumption of lowest
tenderer being 17.1kW/h.
Appointed 2nd lowest tenderer as cost difference resulted in 7 year payback based on electrical
consumption and current increases.
REPLACEMENT OF SEWAGE PUMPS
Before: 48kw
After: 37kw
Before
After
2 x 13 kW
2 x 9 kW
2 x 9 kW
2 x 7,5 kW
3 x 48 kW
3 x 37 kW
188 kW
144 kW
T/A UMFA - UMFA WC BUSINESS TRUST
CREDIBLE
METERING SYSTEM
Registration No: IT 113/2009
P O Box 13434, N1 City, 7463
61 Durmonte str, Durmonte, Western Cape Province, 7550
Tel: 021 9790800 (082 7854202)
Fax: 086 611 4081
EMail: capetown@umfa.co.za
Website: www.umfa.co.za
Tenant Name:
Building
Victoria Wharf
Acc No
Units
147
Area
41259
103.00
Notes
Vat Reg:
Consumption Report June 2010 (32 days)
CONSUMPTION REPORTS:
•
Provide consumption details
•
Trend of monthly costs
•
Consumption reports provided to
Date
2010/06/21
Description
Levy
Electricity kWh
Vat
6,463.27
Amount
904.86
7,368.12
all tenants
Direct billing – “you use, you pay”
Total Charges
Meter Readings
Cons
9778
8000
2000
0
Reading Period
Supplier(s)
Tariffs
Charge p/u
Basic Fee
City of Cape Town
E-SHC
0.62330
11.52000
7,368
6,600
4000
6,593
6000
8,373
100.00
7,931
1
6,790
9778
6,751
485612
7,368.12
10000
2010/06/21
7,881
%
7,368
475834
904.86
Tenant Rand Statistics
Usage Fct
7,943
2010/05/20
(E)671
Current
6,463.27
6,847
Previous
6,326
Meter No
Amount
•
CONSUMPTION IN KL – metering example
TENANT EDUCATION
•
Tenant workshops on Energy Efficiency
•
Advise Tenants on various products, contractors and suppliers
•
Service providers / consultants undertake some work on risk
•
Undertake alterations / install new equipment when premises are upgraded
•
Increase direct billing and reduce common area operating expenses.
People tend to behave differently when they are in control or can make the
changes.
TENANT EDUCATION
1. Update of tenant criteria document
Before
New
Heat load 45w/m²
Heat load 40w/m²
Neon lighting for signage
LED and fluorescent
Halogens 50w with magnetic ballast LED or max 20w with electronic gear
Metal Halide 70-150w
LED or max 70w Metal Halide
Geysers
Heat pumps
All other lighting control gear,
magnetic
All other lighting control gear, electronic
2. Review of tenant interior designs and advise them on cost effective and energy saving
designs or alternate options
WATERFRONT JEWELLERS – CASE STUDY
Tenant
Area size
Average cons/
before energy
savings
Average
cons/after energy
savings
kWh / m2
before
kWh /
m2
after
Tenants implementing Energy Saving
Uwe Koetter
29
1201
881.4
41
30
Lorraine
Efune
Jewellers
81
9056
2294
112
28
Jeweller XYZ
103
9511
92
48.8
Jeweller 123
130
7820
60
TOTAL CONSUMPTION IN kW
CONSUMPTION 2008 – MARCH 2012
Energy (kWh) Usage Trend
74000,000.00
72587,835.60
72000,000.00
70000,000.00
69590,711.60
68000,000.00
66078,903.20
66000,000.00
64943,212.00
64000,000.00
62000,000.00
61326,386.00
60000,000.00
58000,000.00
56000,000.00
54000,000.00
April 2007-March 2008
April 2008 - March
2009
April 2009 - March
2010
April 2010- March 2011 April 2011 - March 2011
Saving of 11,261,449kWh or 15,5% using 2008/2009 as the base year OR an additional R5.6Million/year
Cumulative saving of 25,415,004 kWh for the period April 2007 – March 2011
MAXIMUM DEMAND IN kVA
2008 – 2012
Average Monthly Maximum Demand (kVA)
14,000
12,000
12 247
kVA
11 519
kVA
11 455
kVA
10 957
kVA
10,000
8,000
6,000
4,000
2,000
-
April 2008 - March 2009
April 2009 - March 2010
April 2010- March 2011
10.53% saving from 2008/9 to 2011/12
April 2011 - March 2012
THERE ARE A NUMBER OF ENVIRONMENTAL AWARENESS
INITIATIVES PLANNED FOR THE NEXT FEW MONTHS:
WE CELEBRATED EARTH HOUR ON 23 MARCH
Energy Management is part of our
Environmental program
The Heritage standard addresses:
•
Purchasing and Procurement
•
Business Partnerships
•
Design and Construction
•
Transport and Vehicle Maintenance
•
Biodiversity Management
•
Communications and Marketing
•
Resource Management (Water, electricity, gas, waste, etc)
•
Community Involvement
•
Management Systems
AWARDS RECEIVED
Environmental Heritage
System
From Silver in February 2012 to
Gold in November 2012
Energy efficiency awards
Eskom ETA Awards
2012
City of CT Energy Efficiency
Forum Award 2012
ALL NEW DEVELOPMENTS IN THE PRECINCT WILL BE AT LEAST
4 STAR RATED
New Allan Gray Head Office
6 Star As Design rating achieved in February 2013
WAY FORWARD
1. Complete current lighting project:
•
Potential 3GWh or 3 000 000kWh saving per year
•
R4,4 Million project
2. Continue with tenant education.
3. Update of tenant criteria document and implementation of Green Lease.
4. Improve on data analysis.
5. All future developments to be designed and built following Green Building
guidelines.
6. Have just completed our Carbon Footprint audit.