quad africa energy innovative energy and demand control technology edc system
TRANSCRIPT
The Quad Africa EDC PhilosophyElectric power has largely replaced oil as the most controversial
energy issue of the new millennium and is growing by more than 80 000 MW per year. (Twice the total South African demand)
Souring costs, high interest rates and environmental damage caused by large power plants have wreaked havoc on the once booming industry.
In most countries, electricity prices have risen faster than the general rate of inflation since the mid1990’s.
In this regard electricity generation has been mostly that of coal fired power plants. These are a major cause of air pollution, and are implicated in the predominant environmental issue of the time, namely acid rain and global warming.
Quad Africa accepted the challenge to become a leading innovative technology service provider to promote an ecologically sensitive approach to the usage of electricity.
QUAD AFRICA ENERGY
Innovative Energy and Demand Control Technology
EDC SystemDesigned by Quad Africa for the special energy needs and requirements of the South African retail and commercial sector.
EDC directly contributes to a cleaner environment
Reducing your monthly Electrical BillThere are numerous technical aspects which can contribute to reducing electrical costs.
Many of these concepts - for example Power factor correction Harmonics and transient energy management Load balancing etc.
can and will contribute to improved energy efficiency but the core of cost reduction is a simple concept …………
You have to reduce your energy usage and demand for electricity
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Reducing your monthly Electrical Bill
The market is flooded with:1. Monitoring Programs2. Staff behaviour and training programs3. “Cleaning-up” your power…….
…..programs and products, but not a single product restricts, in a fully automated manner, the user to operate within a clearly defined energy budget. This is what sets EDC apart from all other energy products.
How ?With the Quad Africa EDC system, business operators can now be in
control of the monthly electrical cost
For example – If your monthly electrical bill is R 50 000, the new +30% increase will result in a R 65 000 monthly bill.
The R 15 000 pm increase can only be reduced if you use and demand less electricity.
With the EDC system, the business operator can now choose, according to a practical scale, the monthly cost of the electrical usage and demand.
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The Practical of How? A Quad Africa consultant will survey your business operation by
1. Assessing the 24-month energy and demand profile
2. Identifying your essential and non-essential loads
3. Consider your trading cycles and periods
4. Determine the effect and impact of seasonality
The consultant will then present the EDC financial saving options in accordance to the available and realistic practical energy saving options.
An electrical energy budget is agreed upon which will meet the business requirements, trading and turn-over requirements -
but in order to save, certain well defined and agreed upon inconveniences will periodically occur (to save energy you must use less electricity !)
The EDC system is then installed and will control the electrical energy and demand usage as per the client’s preference . The client can monitor the EDC performance “real time” on an interactive website.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 160
20000
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100000
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200000
(Stb)kW-hr
kW-hr
May 2009
Jan 2008 Months
kW-hrPer month
Weighted Ave135 000 kW-hr
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 160
50
100
150
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250
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350
400
(Stb) kVA
kVA
Months May 2009
Jan 2008
Weighted Ave250 kVA
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16R 0
R 10,000
R 20,000
R 30,000
R 40,000
R 50,000
R 60,000
R 70,000
(Stb)Cost
Old Tariff
Jan 2008 Months May 2009
Cost with EDCR 47 500 pm
Cost withoutEDCR 67 500 pm
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1 2 3 4 5R 0
R 10,000
R 20,000
R 30,000
R 40,000
R 50,000
R 60,000
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Old TariffNew TariffkVA CapEDC Fixed Cost
May 2009
Sept 2009
Monthly Electrical cost – no EDC2009/10 Tariff
Monthly Electrical cost – with EDC 2009/10 Tariff
Elec Tariff Increase
(Stb) – Cost Projection
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Monthly Electrical cost – no EDC2008/9 Tariff
How to reduce electrical usage and demand in a highly competitive business environment ?
Any retail environment operates on excess and redundancy electrical energy elements.
For example (Lighting and Airconditiong in Retail)Customers seldom complain if lighting levels (lux) drop by 15%. Few customers can feel the difference between 22°C and 24°C The energy input required to maintain 22°C in a 5000m² premises
will require 25% more electrical energy than at 24.5°C when the outside temperature is 30°C.
Maintaining 1000 lux over a trading floor of 5000m² will require 30% more energy than 800 lux – though the untrained naked eye will not notice the difference. A further waste factor is the related heat of the 1000 lux which will have to be off-set by the airconditioning.
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How to reduce electrical usage and demand in a highly competitive business environment ?
Any fast food franchise environment operates on excess and redundancy electrical energy elements.
For example (Heating and Refrigeration)Food preparation by means of energy intensive fryers with oil
mediums are programmed to ensure that the product is never under prepared (acceptable safety margins)
The question is – what happens to the excess heat generated by these safety margins ? The Quad Africa EDC reduces waste heat in a very innovative and energy efficient manner.
The same applies to refrigeration. Produce are often refrigerated to and maintained at safety margins far below what is really necessary.
The Quad Africa EDC applies energy conservation cycles or so-called “green cycles” in heating and cooling.
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What really happens? Consider the hot plate of a stove A 1.2 kW hot plate will boil 1 litre of water on the hot plate in a period of
approximately 5 minutes (Selector switch on high) If you switch the hot plate off for 5 seconds and then back to high during the period
of 5 minutes, you will see that the time it takes to boil did not change (Theoretically there may be an argument but in practise – not!)
After 4 minutes you will find that the hot plate is at maximum temperature. If you switch it off for 5 seconds – and then back on to high the temperature of the hot plate will not drop in measurable terms. This is simply because the hot plate stores heat which will not dissipate or disappear when the plate is switched off for 5 seconds.
For the sake of simplicity, we call this method of using stored heat (energy) a “green cycle” which means work is done during that time but no electrical energy is used.
The Quad Africa EDC system calculates how many green cycles can be applied without affecting the process or product. Every “green cycle” saves money and contributes to a clean environment.
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How does the EDC save electricity?Electrical costs are derived from two components:kVA (currently the national cost varies from R60 – R80 per kVA)kW-hr (currently the national cost varies from 22c to 45c per kW-hr)
By reducing your demand from 600 kVA to 400 kVA you will immediately save 200 x R 70 = R 14 000 per month.
By reducing your energy usage from 150 000 kW-hr to 100 000 kW-hr per month you will save 50 000 x R0.25 = R 12 500 per month
It must, however, be practically and realistically possible for your business operation to be able to accept the energy and demand reductions – which can only be determined after the survey and the resulting energy and demand profile.
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The client and the consultant will formulate and define an energy budget The client will be aware of the “inconveniences” which may occur in order to
adhere to the energy budget The “inconveniences” will have minimal impact on trading or income-
generating operations / activities The EDC will allocate a predetermined energy budget to each premises The energy budget is then allocated to 15 minute trading cycles. If the premises operate within the allocated budget, no inconveniences will
occur. (inconveniences = less airconditioning, less lighting, less staff facilities) If the premises exceeds the 15-minute energy budget, the premises will
enter a “green cycle” – i.e. less energy will be allocated to airconditioning, lighting, staff facilities and back-of-house operations
The “inconveniences” will be in order of priority (8 Levels defined by consultant and conceded to by the client)
How will my energy budget be determined?
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Green Cycles 24-Hr Electrical Energy Usage
22h00-09h00
15 min “Green Cycle”
45 min no EDC
19h00-21h45
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No Trading
Define “inconveniences” and how will it affect my business operations? The non-essential electrical loads will be classified in priority levels 1 to 8 Airconditioning will be level 8 – which means that it will be the first electrical
load to be switched off when the demand or energy usage is exceeding the cap or budget
Hot water cylinders will be level 7 At level 6 staff facilities like urns, kitchens etc. will be disconnected during
the “green cycle” Lighting levels in less critical areas will be reduced during “green cycles” Priority level 1 will be a percentage (+/- 30%) of the electrical energy
supplied to lighting in critical areas The EDC will always start by reducing electrical energy to level 8 and will
sequentially move to higher priority levels in accordance with the electrical budget requirements
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Installation ?
Programmable Controllerwith residual software
Sensing circuitry
Logic control circuitry
Non-essential circuits under EDC control
Quad Africa -EDC
Survey, energy profile, defined energy and demand budget (1 week)
Installation and commissioning (3 days) Web information to client
Real Time
GSM link to network
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CLIENT:-------------Date: ---- Time:-----kW-hr Budget: 100000kVA Cap: 250Usage: (kW-hr) 72663(Month to Date)
Budget Adherence 86 %Month to Date Cost R 21 022
EssentialCircuits Non-Essential
Circuits
Municipal/EskomSupply Meter
EDC
CLIENT:-------------Date: ---- Time:-----kW-hr Budget: 100000kVA Cap: 250Usage: (kW-hr) 72663(Month to Date)
Budget Adherence 86 %
Meter
EDC
Municipal/Eskom Supply
Premises Distribution Board
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EDCCONTROL CENTRE
CLIENTWEB LINK
GSM
Real Time information
What about failure and back-up service? It is recommended that the client enters into a full maintenance and monitor
service agreement The system will be linked to a 24/7 EDC monitor centre. Local service agents are linked to the call centre to provide 24/7 back-up
service and help A 48-month rental is available – which is renewable Should your store or trading parameters change, related software changes
can be done on-line. The client will have on-line access to the EDC website to monitor energy
efficiency The client will receive an annual energy savings verification certificate issued
by an accredited agent The system is linked to the Department of Minerals and Energy CDM (Clean
Development Mechanism) PROJECTS. (See DME website project Red Signal – CO2 reduction program.
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