Lebanon Energy Efficiency and Renewable Energy Financing ... and... · Lebanon Energy Efficiency...
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Lebanon Energy Efficiency and Renewable Energy Financing Facility Quick Wins in Energy Efficiency IBEF 2019 September 2019 Funded by Promoted by TA Support Implemented by
Transcript of Lebanon Energy Efficiency and Renewable Energy Financing ... and... · Lebanon Energy Efficiency...
Lebanon Energy Efficiency and Renewable Energy Financing Facility
Quick Wins in Energy EfficiencyIBEF 2019 September 2019
Funded by
Promoted by
TA Support
Implemented by
WHY ENERGY EFFICIENCY
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In order to generate/save one unit of energyInvestment required for energy efficiency = half of the investment
required for renewable energy
QUICK WINS INENERGY EFFICIENCY
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DO YOU HAVE EXTENSIVE STEAM AND HOT WATER DEMAND??
Don't waste boiler flue gas heat, use an economizer!
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Use heat from thechimney to heat theboiler feed water
Boiler economisers can pay back in 1 year
Recover the heatfrom the chimney ofdiesel generatorstoo!!!
Don't waste blowdown heat!
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Steam distribution injects low pressure flash steam
into boiler feedtank
FlashVessel
Flash steam taken directly into a flash condensing deaerator head
Blowdowninlet from
TDS control valves
Thermostat
Use heat from theBoiler blowdown toheat the incomingmake-up water
Blowdown heat recovery can pay back in less than 1 year
Decreasing excess air to the boilers with O2 control increases boiler efficiency
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O2 controls saves at least 5% and pay back is < 2 years
Oxygen Control
Insulating steam distribution valves and flanges
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Insulating steam valves and pipes can have a payback of between 1-2 years
Fitting flexible insulation to a steam system valve
Before After
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COOLING&CHILLING SYSTEM CONSUMING A LOT ??
Be sure that you select the right unit!!!
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Air‐cooled
Water‐cooled Package Rooftops
Heat Pumps
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• Investigate “Free Cooling”!!!
• As a general rule, the chillers efficiency will beincreased by 2.5% for each 1°C drop in thecondenser water supply temperature.
Water cooled have higher efficiency!!
• Avoid using oversized chillers. Instead use multiplechillers in “stretch mode”.
COP at 90% load factor = 3.5COP at 50% load factor = 2.8!!
• Use tube cleaners. Just a 0.6mm scale layer oncondenser tubes reduces chiller heat transferefficiency by 34% and increases energyconsumption by 21%.
Variable speed drives (VSDs) save energy
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Reducing the motor speed by 20% can save 50% energy on fan systems, water pumps and compressors.
Speed (%)
Inpu
t Pow
er (%
)
100
0
80
60
40
20
010 20 30 40 50 60 70 80 90 100
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DO YOU HAVE BIG AIR COMPRESSORS??
Don't waste Compressor heat!
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• Boiler, typical efficiency = 85%• Air compressor, typical efficiency = 90%, AS A MEANS OF PRODUCING HEAT!
• Only 10% of energy goes into producing compressed air• Major potential for waste heat recovery
Don't waste Compressor heat!
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Applications: Factory space heating Preheating combustion
air for burners
Recover heat for air heating
Compressor heat recovery has a payback of <2 year
New compressors reduce energy consumption
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Old load/unload compressors Modern adjustable compressors can save
Compressor upgrades can pay back in < 2 years
LEAKS&EXCESS PRESSURE
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Every 5°C rise in inlet temperature, a 1.7% rise in energy consumption will be needed to achieve equivalent output
Leaks are a significant source of wasted energy in acompressed air system, often wasting as much as 20%-30% of the compressor’s output.Proactive leak detection and repair can reduce leaks toless than 10% of compressor output.
For every 0.14 bar pressure reduction 1% of electricity consumption can be saved. So used dedicated compressors for required output
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DO YOU HAVE TOO MANY LAMPS??
Lighting technology continues to improve
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Simply switching to LED lighting can pay back in 2-3 years
Design Carefully & Control Efficiently
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Not just think about lamps. Consider efficiency of luminaires too.
Design the system carefully, with a good planning, same lighting level can be achieved with much less luminaires
Consider automatic controls: Timers, occupancy sensors, daylight sensors etc..
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More???
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If you have high electricity and thermal (cooling) demands together, consider Co‐generation/Tri‐Generation
Always control the consumption. Use Facility Management Systems/Process Control Systems
Be sure that your production machinery is up‐to‐date. There maybe much faster/efficient/better quality production machines available
If you have wastes, don’t waste them!!
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Case Studies
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LEEREFF INVESTORA leading beverage producer in Lebanon uses only diesel generators for the electricity demand. Therefore, high power diesel generators are in operation whole year.
PROJECT• Heat recovery system on the diesel generators exhausts in order to produce steam• Heat recovery system on diesel generator intercooler & jacket water to produce hot
water• Using adiabatic cooling instead of cooling towersFINANCING • Total Investment: USD 273,000FINANCIAL IMPACT• Annual savings: USD 214,000• Payback period: 1.3 years
Energy Efficiency in Beverage Industry
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Co‐Generation Investment
Sector Textile
Project GoalsUse of Reciprocating Engine in order to produce electricity and steam –1.8 MWel
Total Investment $2.38 M
Total Energy saving 39.3 GWhel/year
Payback 3.2 years
IRR 35%
Co-Generation Investment
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LED Lighting
Sector Organized Industrial Zone
Project Goals The Management of the OIZ decided to replace all lighting with LED
Total Investment $400,000
Total Energy saving 2,166 MWhel/year
Payback 4 years
IRR 25.5%
LED Lighting
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Replacement of big electrical motors
Replacement of big electrical motors
Sector Mining
Project Goals Using high efficient motors in stone crushing processes
Total Investment $3.0 M
Total Energy saving 5.8 GWhel/year
Payback 6.4 years
IRR 14.42%
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Heat Pumps
Ground Source Heat Pumps
Sector Automotive
Project GoalsInstallation of ground source heat pumps instead of using standard gas boilers and chillers
Total Investment $1.57 M
Total Energy saving 1,479 MWhpr/year
Payback 9 years
IRR 9.9%
