electricity saving in buildings using leds lightbulbs
TRANSCRIPT
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CONTENTS Objectives Lighting electricity consumption in buildings Electrical consumption before retrofitting- A case study of dormitory section in IMOP
building LEDs light bulb After retrofitting Results Conclusions
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OBJECTIVES To highlight current lighting electricity consumption in buildings To decrease electricity consumption in
buildings To estimate the required investment To calculate the Payback period To calculate monthly electricity saving using LEDs light bulbs
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LIGHTING IN BUILDINGS – ELECTRICAL CONSUMPTION Lighting represents almost 20% of global electricity consumption This consumption is similar to the amount of electricity generated by nuclear power The latest IEA estimates show the total savings potential in residential and services lighting at more than 2.4 EJ per year by 2030
Source: International Energy Agency
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CURRENT SCENARIO – DORMITORY SECTION, IMOP BUILDING Apartment
Number of lamps
Watt Total Wattage
Bedroom 1 4 60 240
Bedroom 2 4 60 240
Kitchen 2 50 100
Toilet 1 50 50
Shower 2 50 100
Total current power requirement of an apartment 730 W
AssumptionsBedrooms: 8h/dayKitchen: 16h/dayToilet & bathroom: 4 h/day
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Current electricity consumption and monthly & annual bill of an apartment
Electricity consumption per day: 6.04 KWh Total consumption per month: 181.2 KWh Monthly electricity bill: 543.6 rubles (1 KWh
= 3 ruble) Annual electricity bill: 6523.2 rubles
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LEDS LIGHTS Three of the most common energy-efficient lighting types include halogen incandescents, CFLs, and LEDs Traditional incandescent bulbs use a lot of energy to produce light 90% of the energy is given off as heat That lost energy is money we are throwing away LEDs use only 20%–25% of the energy and last up to 25 times longer than the traditional incandescent bulbs they replace LEDs use 25%–30% of the energy and last 8 to 25 times longer than halogen incandescent The LED lamps have very high efficiency It acts as an environmental light source from manufacturing to
disposal Source: www.mrs.680 org,
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LEDS VS. OTHER LIGHTBULBS
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AFTER RETROFITTING Apartment
Number of lamps
Watt Total Wattage
Bedroom 1 4 10 40
Bedroom 2 4 10 40
Kitchen 2 6 12
Toilet 1 6 6
Shower 2 6 12
After Retrofitting the total power requirement of an apartment 110 W
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After retrofitting, electricity consumption
and monthly bill of an apartment Electricity consumption per day: 0.904 KWh Total consumption per month: 27.12 KWh Monthly electricity bill: 81.36 rubles (1 KWh
= 3 ruble) Annual electricity bill: 976.32 rubles
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RESULTS – FOR 100 APARTMENTS Total investment for changing lamps:
273,000 ruble (1 bulb, 210 ruble; 1300*210=
273,000) Annual Economy by reducing electricity bill: 6523.2*100 - 976.32*100 = 554,688 ruble Payback period: 273,000/554,700 = 0.49
years = 6 months Amount of electricity saving per month:
181.2*100 - 27.12*100 = 154* 100 = 15,408 KWh
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CONCLUSIONSReplacing the present traditional lights by LEDlights in our buildings would result in; lower electricity bills energy conservationFurthermore, the process is quite feasible and
economically viable.
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THANK YOU