What is Voltage Optimisation What do the Experts say A 230V linear appliance used on a 240V supply will take 43 more current and will consume almost 9 more energy and only achieve 55 of its rated life ID: 551718
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Slide1Slide2
What does voltage optimisation do?Slide3
What is Voltage Optimisation?Slide4
What do the Experts say?
“A 230V linear appliance used on a 240V
supply will take 4.3% more current and will
consume almost 9% more energy …”
and
“… only achieve 55% of its rated life
”
Savings with Voltage Optimisation completely depends on the load the company has and therefore a full site survey is essential.Slide5
Reduce kWh
Reduce CO
2
CRC, CSR
Save money
In addition,
VO helps with
Targets, obligations, pressures…
Why is it important to optimise site voltage?Slide6
Reduces kWh Consumption
How does Voltage Optimisation help?Slide7
Will everything consume less energy?
NO not everything …
Greatest savings come from inductive loads (Motors, Lighting)
Some loads will yield less savings (VSDs)
Some loads will yield zero savings, but will benefit in other ways
It is important to understand the electrical loading characteristics of your site.
Remember no two sites are the sameSlide8
InstallationSlide9
Optimise at HV side or LV side?
The diagram below shows a typical onsite plant room set-up, without any voltage optimisation technologies being utilisedSlide10
Optimise at HV side or LV side?
The diagram below shows the same typical plant room set up, but highlights where Powerstar voltage optimisation technologies can be installed on either the HV or LV supply
Powerstar voltage optimisation system,
available in fixed or electronic-dynamic variations
High voltage side
Low voltage side
POWERSTAR HV MAX:
An amorphous core
super low-loss transformer with integral voltage optimisation and electronic-dynamic regulation
POWERSTAR VOLTAGE OPTIMISATION SYSTEM:
Available in fixed or electronic-dynamic variationsSlide11
Case studies and testimonialsSlide12
Total before (kWh) (24 days) 34355.3
Total after (kWh) (24 days) 25403.8
Savings (kWh) 8951.5
% Savings 26.1%
Annual savings based on 8p/kWh £10,891
Guoman Hotels Group Ltd – Thistle Hyde Park
“So far the Powerstar installations in our hotels have achieved as much as an amazing 26.1% saving in total electricity consumption at our Thistle Hyde Park Hotel and elsewhere, never less than an 11.5% saving.
”
David Hannah, Head of Property, Guoman Hotels Group LtdSlide13
Annual energy consumption reduction and cost savings
Unit 1: 24.7% reduction / £8,067 saving
Unit 2: 11.3% reduction / £3,391 saving
Unit 3: 13.65% reduction / £4,537 saving
Unit 4: 8.59% reduction / £6,598 saving Unit 5: 6.2% reduction / £8,204 saving
Department for Business Innovation & Skills
Seven Powerstar units were installed into BIS, the results of five of these installations are shown below. Two of the units currently have no data for savings as BIS changed the meter and have not had data since.Slide14
NHS – Ashworth Hospital
The hospital were looking for a reliable system to effectively reduce high energy costs and consumption caused by lighting, plant & IT equipment in the hospital.
Savings (kWh) 458,272
% Savings 12%
Annual savings
£51,213
Payback period 3 years
Following the installation of four Powerstar units the hospital is benefiting from the following savings
:Slide15
Derby City Council is aiming to reduce its carbon emissions by 25% by 2013/14 as part of a ‘Climate Change Strategy’.
The Council’s Eagle Centre market,
Environmental Services parks management depot
and the Market Hall have had Powerstars installed
.
Savings (kWh) 128.972
% Savings 14.6%
Annual savings £10,000
Emission Reductions 69.2 tonnes
Derby City CouncilSlide16
“The installation of the Powerstar systems has
cut our energy cost by nearly 20%”
Chris Chisman, Engineering Manager, TEV Limited
Two Powerstar units creating a 125kVA system were installed at TEV to optimise the incoming supply to the factory. As a result an actual reduction in electricity consumption of 17.8% was achieved.
TEV Ltd
Total before (daily) 857.8kWh
Total after (daily) 704.9kWh
Savings (kWh) 153.1kWh
% Savings 17.8%Slide17
University of Surrey
The University of Surrey has held sustainability at the heart of its CSR agenda for over a decade. The campus is home to 17,900 students and 2,597 staff and views investing in sustainable technology as a critical component.
Savings (kWh) 189,474
% Savings 8.1%
Annual savings £13,911
Payback period 3 yearsSlide18
% Savings: 13.6%
London City Hall
Home of the Greater London Authority accommodates the Mayor of London, the London Assembly and 600 or so permanent GLA employees..Slide19
Can we help?
YES, we can…
If you are not sure what to do to reduce your energy consumption, contact us and we can organise a free
no-obligation proposal.
Call us on +44 (0)1142 576 200 or
e-mail us at powerstar@ems-uk.orgSlide20
Civic Offices
Installed ~2008/9Large office building with considerable amounts of LF Lighting and various pumps, fans etc.
Paid for through corporate Invest to Save fundExpected 10% savingAchieved: uncertain as new data centre installed around the same time but very likely exceeded 10%
Has now been removed as building sold - will be relocated to suitable buildingSlide21
Oakengates Leisure Centre
Installed
200kVa unit in 2010
Leisure centre with large swimming pool with considerable amounts of LF Lighting and pool equipment including AHU, pumps, fans etcPaid for through Salix – 0% Loan
Expected annual saving of 32,000kWh (~9%) leading to 4 year paybackAchieved: uncertain as building extended at the same time. Likely exceeded 10%Slide22
Oakengates Theatre
Installed 288kVa unit in 2011Mixed use building. Primarily theatre but also children's centre. Large AHU unit with pumps, fans etc.Paid for through Salix – 0% Loan
Expected annual saving of 25,000 kWh (9.3% - guaranteed) leading to 5 year payback. Slide23
Oakengates Theatre – AMR
Achieved savings – 27,063 kWh year on year (~£3,200)Slide24
Contact Details
Please contact Elliot Jones – Sustainable Development Officeremail:
elliot.jones@telford.gov.uk
Call: 01952 384225