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Sunlabob Energy Audit
Energy Audit Department, Sunlabob Renewable Energy Ltd
Introduction to the Sunlabob Energy Audit ການນ ໍາ້ສະເໜີການນ ໍາ້ສະເໜີການນ ໍາ້ສະເໜີການນ ໍາ້ສະເໜີ ການກວດສອບພະລງັງານຂອງການກວດສອບພະລງັງານຂອງການກວດສອບພະລງັງານຂອງການກວດສອບພະລງັງານຂອງ ບໍລສິດັບໍລສິດັບໍລສິດັບໍລສິດັ ຊນັລະບບົຊນັລະບບົຊນັລະບບົຊນັລະບບົ
Customer, Vientiane, Lao PDR – Sept 2011
Contents and Aims of the Presentation
Contents
I. Sunlabob company II. Energy efficiency III. Phase I: Auditing and consultingIV. Phase II: Implementation
AimsTo provide customer with an overview of our concepts and services and present the benefits of an energy audit towards energy efficiency.
� Commercial energy provider based in Vientiane since 2000
� Specialised in renewable energy solutions
� 10 years experience in providing energy for off-gri d areas
• Local knowledge of culture / language / business context
• Extensive experience in training local staff
� 2 methods to deliver energy solutions:
• Selling hardware (Direct Sales)
• Selling service (Service Provider)
� Award-winning company
Who is Sunlabob?
3 I. Sunlabob company
Energy contributors in Laos
Ministry of Energy and Mines
� Official support in Lao P.D.R.
� Long term relationship with Sunlabob
I. Sunlabob company4
Energy efficiency department
Sunlabob energy efficiency department helps you to reduce the energy consumption in your buildings with the following solutions:
1. Energy Audit on existing buildings2. Energy Efficiency Consultancy prior to construction of
new buildings3. Supplying and installing Energy Efficient Equipment4. Behavioral training, work reorganization
5
WHAT do we offer to our customers?
I. Sunlabob company
� Energy efficiency activity started in April 2007� First and only company officially licensed by Ministry of Energy and Mines in Lao
PDR to conduct energy audit
Energy efficiency department
� EE department assets– Dynamic building performance simulation: Derob software
– Supported by Sunlabob’s 10 years of expertise in:• Solar water heater, solar photovoltaic
• Decentralized energy free waste water treatment systems: DEWATS
– Experienced in implementation of: efficient lighting, insulation, motion sensors, etc.
– Wide range of experiences: Offices, camp sites, houses, schools
6 I. Sunlabob company
� EE customers – successful start with several large contracts:
– Phu Bia Mining campsites (offices, workshops, accommodations, laundry) : 35.6% savings
– Swiss Development Cooperation agency: 45.9% savings
– Vientiane College: 51% savings
– Lao-German House: 34% savings
– Theun Hinboun Power Plant Company: 37 % savingsPhuBiaMining Ltd.
WHY energy efficiency is beneficial to our customer s?
� Money: Operational cost-efficiencies = positive impact on business profitability
� Security: Increased energy security (electricity outages, reliability)
� Quality: Increased comfort and lower maintenance
� Environment: Reduced environmental impact and increased sustainability of
buildings
� Image: Energy savings = environment protection = increased marketing
potential (corporate social responsibility)
7 II. Energy efficiency
10 Steps towards Energy Efficiency
Phase I : Auditing / ConsultingPhase I : Auditing / Consulting Phase II : ImplementationPhase II : Implementation
1 2 3 4 5 6 7 8 9 10
8 II. Energy efficiency
What is an Energy Audit?
9 III. Phase I: Auditing and consulting
WHAT� Study of the energy use and wastes of your facilities
� Energy efficient turnkey solution recommendations
OBJECTIVES� Give a better understanding of the energy consumption
� Identify and reduce energy wastage and inefficiencies
� Reduce the energy costs and environmental impact of the building
� Establish an energy management program
BENEFITSEnergy Audits can create savings up to 50% off theenergy consumption of buildings in use.
PHASE I – Step 1
Parts of the Energy Audit quotation1
10
Building Size
Energy Expenses
Density of Equipment Detailed Quotation
- Standard project: Quotation free of charge for phase I.
- Large and specific project: A pre-audit site survey will be necessary.Sunlabob Engineering team will review the site before providing an EA quotation.
III. Phase I: Auditing and consulting
PHASE I – Step 2
Agreement & Contract2
Should management decide to proceed, following a meeting and presentation of the quote, a contract will be drawn up to outline the costs and time frame of the project.
11 III. Phase I: Auditing and consulting
Customer
PHASE I – Step 3
On-site Data Collection3
Detailed analysis of the site to determine where, when and how energy is used:
� Evaluation of site, plant, building and equipment operation
� Survey of all the building and equipment energy specifications
� Behavioural questionnaire to staff
� Hourly consumption profile metering over a period of 7 days
Important to cooperate with staff during
interviews and measurements +
suggestions for improvements
12 III. Phase I: Auditing and consulting
PHASE I – Step 3
� The following physical values are measured and
recorded:
13
On-site Data Collection3
III. Phase I: Auditing and consulting
• Electrical energy (power, intensity, voltage,
energy, power factor, harmonics, etc.)
• Temperature (air, surfaces)
• Humidity
• Luminosity
• Flow rates (air, water)
• Heat flows
• Pressure (gas, liquids)
• Sun insulation
Nameplate Effective Total Effective
Office
10 Fluorescent Philips 5 46 50 252 0.43 0.54 11 5 52 721
100 CFL Downlight Generic 8 13 23 183 0.16 0.64 12 5 52 570
Ceiling exhaust fan Generic 1 60 60 0.43 0.65 12 7 52 260
CFL Downlight Generic 8 13 23 183 0.16 0.64 12 5 52 570
Air conditioner MITSUBISHI 1 2625 2625 11.33 0.99 6 5 30 2362
Fluorescent Philips 2 46 50 101 0.43 0.54 12 5 52 314
Air conditioner MITSUBISHI 2 3391 6781 5.9 0.84 6 5 30 6103
Fluorescent Philips 12 46 50 605 0.43 0.54 12 5 52 1887
Refrigerator TOSHIBA 1 67 93 93 0.57 0.75 24 7 52 810
Water cooler Seandara 1 116 102 102 0.71 0.67 12 7 52 445
Oven Berjaya 1 810 697 697 3.4 1 0.5 5 52 91
Bread griller Berjaya 1 2500 2498 2498 10.86 1 1 5 52 649
Water Boiler Zebrathakand 1 1800 2400 2400 10.3 1 1 5 52 624
Coffee machine Generic 1 1129 1129 4.89 0.999 1 5 52 294
Microwave oven Sharp 1 1220 1220 1220 5.28 1 0.5 5 52 159
Power factor
ApplianceConsumption per
year (kWh/yr)Area Brand
101
Days per week
Hrs /day
Intensity (A)Power (W)Qty
103
104
Weeks per year
Example of on-site data collection table
14 III. Phase I: Auditing and consulting
PHASE I – Step 4
Data Analysis & investigation on energy efficient s olutions4
� Energy consumption indicators calculation (kWh/m2, kWh/staff)
� Chart of the actual energy use per appliance and building
� Research and sourcing of materials for customer’s unique context
� Savings and payback period calculation
15 III. Phase I: Auditing and consulting
Single day consumption profile Heat transfer principles
Evaporative air cooling
Global areas of improvements
– Behavioral training• Energy conservation: an energy saving potential not to forget
→Around 10-15% of savings of the total bill in most cases
– Air conditioning and insulation• Thermal insulation and shading of buildings
– Reduction of air conditioning load: more than 20% savings on AC• Air conditioning maintenance and controls
– Optimal operation reduces energy usage and increases systems lifetime
III. Phase I: Auditing and consulting
Solar protectionCellulose insulation
Global areas of improvements
17
– Lighting• Inefficient devices replaced by efficient ones – optimizing energy usage
→Halogen and T8 to efficient lighting offers 70% and 35% savings respectively
• Implementing control systems (timers, presence sensors) reduce device working time: more than 30% savings
• Better utilisation of natural lighting: natural light tube
– Office equipment improvement• Optimizing energy usage of computer systems, printers, photocopiers, etc.
III. Phase I: Auditing and consulting
N computingLaptopLEDTimer
Light tube
CFL
18
– Hot water• Solar water heaters or heat recovery from AC units can
provide ‘free’ hot water: up to 90% savings
– Kitchen appliance improvement• Optimizing energy usage of refrigerators, freezers,
cookers, dish washers, water coolers, water boilers: between 25%1 and 45%2 savings
– Laundry appliances• Optimizing energy usage of washing machines, dryers:
70% savings by implementing natural drying
Specific areas of improvements
III. Phase I: Auditing and consulting
1 adding control on appliances; 2 change of appliance type and size
Solar water heater
Natural drying
Industrial areas of improvements
19
– Motors• Improving the control system will adjust the power to the load: up to
50% savings*→Reduce peak power→ Increase lifetime of equipment
• Switch to more efficient and well sized motors: 5 – 10% savings*
– Electricity distribution• Implement capacitor bank
→Reduce the current intensity and the consumption: up to 20%
– Pumps• Replacement with efficient and properly sized systems
III. Phase I: Auditing and consulting
*over sizing of motor by 30%
20
� The recommendations can immediately reduce energy costs by 5% - 15% using zero or low cost solutions.
� Savings of 30% - 50% (or more) can be achieved by adopting more committed solutions.
Expected savings on total bills
III. Phase I: Auditing and consulting
Summary of findings from data analysis and recommendations:
� Description of the work involved in applying each implementation measure
� Cost of implementing each recommendation
� Annual energy and cost savings for each recommendation
� Cost/benefit analysis: payback period
Report Writing5
PHASE I – Step 5
21 III. Phase I: Auditing and consulting
Example of data analysis charts
22 III. Phase I: Auditing and consulting
Lights 22.3%
Air conditioner
39.71%
Fans 1.0%
Computers 8.1%Other office
1.1%Water heater 4.9%
Kitchen 2.7%
Industrial Equipment
20.20%
Electrical consumption by appliance per year
Admin office 31.9%
Medical building
6.1%Workshop
15.0%
Laboratory 34.4%
Warehouse 5.2%
Project office 7.4%
Electrical consumption by building per year
Example of equipment inventory table
23 III. Phase I: Auditing and consulting
Device Units
Halogen bulbs 12V 20W 49
Halogen bulbs 12V 35W 3CFL bulb 11W 47
CFL bulb 5W 16
T8 Fluorescent 36W 5
Halogene bulb 40W 41
T8 fluorescent 18W 8
Incandescent bulb 10
Halogene standard lamp main
4
Halogene standard lamp secondary
3
Halogen desk lamp 1
Desk lamp 1
9
188
Single Phase 19
19
Ceiling fan 3
Standing fan 7
Extraction fan 11
21
CategoryL
ight
s
Ceiling fixtures
179
Lamps
TOTAL Fans
Aircon
Fans
TOTAL Aircon
TOTAL Lights
TOTAL Ceiling fixtures
TOTAL Lamps
Category Device Units
PU Laptop 1Mornitor for
Laptop1
CM+PU+UPS 13
15
Printer 4
Photocopier 1
Fax 1
6
Microwave 1
Fridge 3
Water cooler 2
Water boiler 3
Water pump 1
Coffee Machine 2
12
Dehumidifier 1
Server System 1
Computers
Kitchen appliances
TOTAL Other Office Equipment
TOTAL Computer
TOTAL Kitchen appliances
Other office equipment
Different investment range
� Zero cost investment measures
( implementable by customer).
� Low to medium cost investment measures
� High cost investment measures
Findings and recommendations included in the report will be presented by
Sunlabob energy audit staff
Presentation of findings & recommendations to the c ustomer6
PHASE I – Step 6
24 III. Phase I: Auditing and consulting
With different payback periods
� Short : few months
� Medium: 2-3 years
� Long: 5 years or more
Phase I - Step 6
25
Template of the main summary table of the report
III. Phase I: Auditing and consulting
Designation Quantity UnitCost per
unit (USD)
Total cost, labour and installation
included (USD)
Current energy
consumption (KWh/year)
Energy consumption
with the solution
(KWh/year)
Energy savings
(KWh/year)
% of energy saved
per appliance
% of energy
saved on total
electricity bill
Solution 1
Solution 2
…
Solution n
Energy savings
(USD/year)
Product lifetime (year)
Total cost for non efficient
material in similar
conditions (USD)
Cost difference between
efficient and non efficient
solution (USD)
Payback period (year)
Return on investment
over lifetime (%)
Net savings over product
lifetime (USD)
Net savings over 10 years (USD)
Net savings over 20 years (USD)
PHASE II – Step 7
Implementation of Solutions 7
� Maintenance, adjustment and upgrading of existing hardware for
better energy efficiency
� Installation of new energy efficient hardware
� Behaviour training to all levels of staff
� Implementation of an energy efficiency policy
� Hardware monitoring
� Work organization set up
26 IV. Phase II: Implementation
Phase II will start after a new contract agreement with Sunlabob and will be based on the customer’s decision of which soluti ons to implement.
Cellulose ceiling insulation
PHASE II – Step 8
User Training8
� Energy efficiency awareness sessions
� Technical use of new hardware implemented to all levels of staff
� Technical use of energy monitoring devices to monitoring staff
� Environmental impact awareness sessions
27 IV. Phase II: Implementation
PHASE II – Step 9
Certification9
• No existing standard in the Lao PDR – still to
be defined and approved.
• Use of international standards instead,
according to customer’s needs
• Certification process to be conducted by the
Lao Institute for Renewable Energy (LIRE) as
an independent body.
Examples of existing standards worldwide
Europe USA
ThailandAustralia
28 IV. Phase II: Implementation
PHASE II – Step 10
Monitoring & Performance Evaluation10
� Installation of energy monitoring devices
� Setting up of an organization to monitor energy consumption in the premises
� Training of energy monitoring staff
� Regular evaluation of results achieved compared to set targets
29 IV. Phase II: Implementation
Power meter Power meter
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