8/14/2019 The Final Frontier Shadows

1/13

8/14/2019 The Final Frontier Shadows

2/13

What is energy auditing ?

Energy consumption of workplace eg. College,hospital, airport

In depth analysis of Electricity bills

Conservation measures.

8/14/2019 The Final Frontier Shadows

3/13

Pattern of demand & consumptionover a period

Contribution of each appliance to theelectricity bill

implementable measures forconservation

Recovery time of investment costs &consolidated savings

INDEX

8/14/2019 The Final Frontier Shadows

4/13

Present Scenario at T.M.Dental College

Total Energy Consumption= 63796 KWhPer unit Charge = Rs.4.6Total Bill = Rs 2,96, 844

8/14/2019 The Final Frontier Shadows

5/13

Departments & Their EnergyConsumption

8/14/2019 The Final Frontier Shadows

6/13

Energy Consumption By EndUse

8/14/2019 The Final Frontier Shadows

7/13

Energy Conservation Equipment

1.ACs

Aircosaver: Electronic Circuit adding

intelligence to cooling systems havingintegrated relay to control current drawn Programmable thermostat to adjust

temperature. CO2 Sensors to control air intake by estimating

people in the room Reflective windows to reduce heat absorption

8/14/2019 The Final Frontier Shadows

8/13

2. Fans

Fans consume less energy at low speeds

Using Energy Rated Fans. Rating of 2.5-3 saves 20% power from fans itselfImprovising rotor blades design reduces current drawn.

FanFanspeedspeed

VoltageVoltage(volts)(volts)

CurrentCurrent(A)(A)

PowerPower(W)(W)

22 228228 0.20.2 1313

33 226226 0.290.29 2626

44 218218 0.380.38 3838

55 220220 0.460.46 5656

8/14/2019 The Final Frontier Shadows

9/13

ParametersParameters Incandescent lampsIncandescent lamps CFLCFL LEDLED

Life span (hours)Life span (hours) 15001500 10,00010,000 60,00060,000

WattsWatts 6060 1414 66

Cost (Rs)Cost (Rs) 2020 150150 11001100

KWh of electricity usedKWh of electricity usedfor 60k hoursfor 60k hours

36003600 840840 360360

Electricity cost @ RsElectricity cost @ Rs

4.634.63

Rs. 16668Rs. 16668 Rs. 3889.20Rs. 3889.20 Rs.1666.80Rs.1666.80

Bulbs needed for 60kBulbs needed for 60k

hrs of usagehrs of usage

4040 66 11

Equivalent 60k hourEquivalent 60k hour

bulb expensebulb expense

Rs. 800Rs. 800 Rs. 900Rs. 900 Rs. 1100Rs. 1100

Total 60k hour lightingTotal 60k hour lighting

spendspend

Rs. 17468Rs. 17468 Rs. 4789.20Rs. 4789.20 Rs. 2766.80Rs. 2766.80

3. LIGHTS

8/14/2019 The Final Frontier Shadows

10/13

LAMP v/s LED

CFL and LED are good alternatives for lamp

incandescent lamp and LED in the range of

10,000 hrs -60,000 hrs.CFL and incandescent bulbs comparison

Comparison

8/14/2019 The Final Frontier Shadows

11/13

ENERGY MANAGEMENT METHODS

Corridor lighting with reflectors to increase illumination

Maintenance of power factor at 0.95

Common switch to shutdown tubes and fans in a room

Cutting down on peak load using automated circuits and soft wares reducing

peak demand charges

Energy Management Software to monitor and control supply to various

departments

8/14/2019 The Final Frontier Shadows

12/13

FINAL VERDICT

Recovery of depreciation costs of AIRCOSAVERSimplemented in 17 ACs is 312 hours. Savings accrue to 1,27, 005 INR after 1800 hours.

Implementation of regulators in 321 fans will be recoveredin 45 days. Savings amount to 51,004 INR. It consumes38W for a speed of 3.

Supported lighting load is 30 KW by 1313 lamps. LED

replacement costs obtained in 3491 hours. Savings accrueto 1, 79, 382. 52 INR after 1800 working hours hereafter.

8/14/2019 The Final Frontier Shadows

13/13

Spasiba