energy conservation techniques - copy

7/27/2019 Energy Conservation Techniques - Copy

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ENERGY CONSERVATION

TECHNIQUES

R SAHAY

eQube


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ENERGY CONSERVATION

CONSERVATION

Conservation(Noun)- is a deliberate planned

guarding and protecting of Something felt as

precious

SYNONYMS Preservation, Salvation, Saving.


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ENERGY CONSERVATION

CONSERVATION

Is not sacrifice

Is not compromise

Is not cutting corners


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WHY ?

RESOURCE CRUNCH

NEED OF HOUR

FOR OUR FUTURE GENERATIONS ETC

ETC


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GANDHIJIs TAKE

Earth provides enough to

satisfy every mans need,

but not every mans Greed


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www.eqube.co.in,Your Energy Partner

MOBILE PHONESDO YOU KNOW

Normally we charge our handsets once everyday for an hour. (Some leave the set chargingovernight)

On an average the handsets consume 4-5

watts for charging. Every day we consume 4watthour energy.

Hence monthly bill 4 x 30 = 120watthour or

0.12KWHr i.e. 60paise per month. WHO CARES.

WHY BOTHER


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MOBILE PHONESDO YOU KNOW

Now as per the mobile telephony

companies, we have 80crore subscriber in

India.

Assuming 70% of that is correct figure, then

we have 56crore users.

Now 56crore x 4 watt hour every day.

56x107 x 4 = 224x107 WattHr every day i.e.

2240x103 KWHr every day Or 2240MWHr.


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TELEVISIONDO YOU KNOW

We watch TV for 4-6 hours every day, ie. For 18-20 hoursthe TV is not used.

We have 20crore TVs in India (1/6th of population).

Assuming 70% of them operate with remote controls and50% of the remote control TVs are switched off using onlythe remote set. (the nos. are much more, hotels, shopsetc.)

The TV consumes 8 watts of power when switched OFFfrom remote, i.e. consumes 8x16=108WattHr every day.

i.e. the country consumes 20x107 x 0.7x 0.5x 108WHr =756x107WattHr every day or 7560MWHr every day,without being used.


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COMPUTERSDO YOU KNOW

Similarly computers are used 8-10 hours aday in an office and the rest of the 14-16hours is idle.

It consumes 8watts in log off mode, i.e.when not being shut down and switchedoff from the power input.

In India there are over 1crore desktops.

Assuming 50% (only) of them do not switchoff from the source, we consume

1x107 x 0.5 x 8 x 16 Hrs= 64x107 WattHrsor 640MWhrs per day.


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OTHERSDO YOU KNOW

Add others the list is long

- Mosquito Tranquiliser 5-7 watts oftenleft on for full 24Hours. 2-3 per home

- Night lamp 10-12 watts sometimes leftON for 24 Hours. 2-3 per home.

- Printers and Fax machines 3-5 watts

always left ON in offices, sometimes inshops.

- Microwave Oven 3-5 watts few in nos.sometimes left on in houses.


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SUMMARY

Hence if we add Over 11,000MWHrs

every day. (assuming only 600MWHrs for all others)

This is lost at the user point. Transmission & distribution losses are 50%

Power plant efficiency & load factor is 50%

Hence energy lost by nation

11000 /0.5 / 0.5 = 44,000MWHrs/ day.


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DOMESTIC FRONT

ENERGY CONSUMERS

Fridges

Air Conditioners

Geysers

Lights

Fans

Pumps

Iron (press)

Ovens & Stoves


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REFRIGERATORS

Continuous consumer.

Keep the thermostat @ min cool

Keep the doors open for minimum time

Cool hot items to room temperature beforestoring.

If freezer cabinet is frozen, then de-frost ASAP.

Check for gasket leakages.

Keep as much material in refrigerator as possible.An empty refrigerator consumes more energy ascompared to a loaded one.


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REFRIGERATORS

Keep the refrigerator in well ventilated area.

Keep refrigerators of the size required and not

desired.

Cook fresh and eat fresh.


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AIR CONDITIONERS

Keep condensers in well ventilated area.

Keep condensers in cool/ shaded areas.

Keep condenser coil clean.

Keep room units filters clean.

Keep thermostat at 24-25o C and not 22o C or

less.

Use required size air conditioners only.

While sleeping set the temperature at 26o C.


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GEYSERS

Use Solar geysers

Use gas geysers

DO NOT USE ELECTRIC GEYSERS. 1 gas cylinder will last for 4-6 months for a

family of 6 as compared to Rs. 1500/- per

month of electric geyser bill.

Set water temperature @ 42o C or less for

bathing.


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LIGHTS

Use only as much as required.

Use CFL for small confined spaces, while T-5 tubelights for large areas/ halls.

Low illumination 24hr usages can be with LEDlamps.

Use 0.5w LED lamps as night lamps.

Use as much day/ sun light as possible. Force habit of switching off lights when not in

use.


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FANS

Use high efficiency fans. Use longer blade fans.

Use electronic regulators stepped ones.

In case going in for new construction/development use DC fans which consume 50%of the AC fan power and at low speedsconsume 30% power.

Bearing lubrication/ greasing is important.

Use only as much is required.


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WATER PUMPS

Size the pump correctly.

Use low flow pumps for longer duration ascompared to high flow pumps.

For sump to terrace pumps try using solarpowered pumps.

Avoid using re-wound motor pumps.

Reduce water consumption and wastage.

Use low flow taps & showers. Try one day no overhead water tank usage.

Measure usage.


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IRON

Use as much as required.

Use at as low temperatures as possible.

Use residual heat for small items.

Segregate clothes in order of low heat - high heatand low heat requirements and then startironing.

In case using for thick cotton clothes use heavierirons, for rest use light weight irons.

Use spray/ water for crease requirements.


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OVENS & STOVES

Use microwave ovens more than direct flameovens.

Avoid using electric ovens

Solar ovens are available good enough forbaking.

Induction tops are good for low temperaturewarming.

Use only as much as required.

Cook fresh - Eat fresh.


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COMMERCIAL & OFFICE

Keep Air Conditioning system temperatures at

24-25o C.

Use lights only to the extent required.

Keep properly sealed windows and doors.

Supplement AC with fans wherever possible.

Become the conscience keeper for energywastage in work place.


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LARGE OFFICE/ INDUSTRY

USE PROFESSIONAL HELP


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ENERGY CONSERVATION IN

EXISITING HVAC SYSTEMS


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consumers

Chillers

AHUs

Pumps Cooling Towers

Ventilation Systems

25eQube


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contributors

Chillers 50% - 55%

AHUs 20% - 25%

Pumps 8 - 10% Cooling Towers 1% - 2%

Ventilation Systems 12% - 15%

26eQube


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chillers

Performance is dependant upon

Chilled water outlet temperature

Condenser water inlet temperature Optimum refrigerant charge

Proper heat exchanger cleanliness

27eQube


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Distribution System

Performance is dependant upon

Operating pump at its best efficiency points.

Operating AHU at its least static head Avoiding of thermal losses

Proper air and water balancing.

eQube 28


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Common Practices

Operate chiller at 10-12oC

Switch on the Chiller and AHU 1 hour before

the office time.

Switch Off chiller 1-2 hours before close of

office .

Start 1 chiller in morning and as return water

temperature increases start the 2nd one and so

on.

29eQube


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Common Practices

Run as many primary pump as many chillers,but operate all of secondary pumps as per fullload design.

Operate AHUs at 40-45Hz in summer and 35-38Hz in winter.

Bypass the controls whenever you receive a

complaint and manually satisfy the user atthat instance.

Close Fresh air dampers.

30eQube


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Specific Actions

Ensure that the actual room temperature isread/ picked up by the temperature sensor.

Compare with simple instruments and sensor

reading. Ensure that the control valves open and close

as per the expected logic. Check with reducing

the set point in thermostat and holding italternatively.

BE PATIENT

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NEXT STEPS - AIR

Minimise the duct leakage.

Check the temperature above the false ceiling

and AHU room and compare with the

conditioned space temperature. If low, then

leakage is high.

Seal ducts.

32eQube


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Next Step - AHU

Ensure that the sensor is located in the rightplace and sensing the return air.

Ensure that the AHU VFD ramps down as per the

logic of the controller. Ensure that the valve closes to the extent

required.

Do this for all the AHUs.

Always start from AHU.

BE PATIENT

33eQube


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Next Step Water Distribution

Ensure that the Pump VFD ramps down to theextent required.

Ensure that the secondary pump water flow issame or lower than primary pump flow.

Ensure that the AHU water inlet temperature issame or close to the chiller outlet temperature.

In case the pumps operate at very low frequency,change the motor.

BE PATIENT

34eQube


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Equipment Performance

Once all other work is done, then cross check

the equipment performance and their

efficiency.

Start from Cooling Tower evaluation.

AHU evaluation.

Then pumps.

Last chillers.

35eQube


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Retrofit / Replacement

Based on the performance evaluation andefficiency, suggest changes in the equipment/process.

In case can think of innovative strategies toreduce energy consumption after ensuringthat distribution and low side is efficient.

Be very careful in suggesting change ofstrategies, with proper estimate of THr &KWHr and not just TR and KW.

36eQube


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SUCCESSFUL STRATEGIES

Cooling Tower WB approach set at 5oF.

Coil & Chiller T increased.

Pump Pressure drop reduced.

Separation of sensible and latent load done.

100% Fresh Air system based on ambient

conditions. Conversion to primary only system.

37eQube


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GENERAL

- Designate empowered energy manager at

home preferably children.

- Become the energy champion in colony/

apartment block.

- Take lead in demonstrating energy saving and

reduction in bills.

- Do not get carried away by sales talk and

gadgets.


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Be proud and happy ofhaving conserved energy

and saved money.

It is infectious.


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WHAT IT TAKES

IT TAKES

ONLY ONE PERSON TO START ENERGY CONSERVATION

ONLY ONE SECOND TO START ENERGY CONSERVATION

ONLY RS. 75LAKHS TO CONSERVE 1MW OF POWER

1MW SAVED AT THE USER END SAVES 2MW OF POWER GENERATION

2MW OF POWER GENERATION REDUCTION RESULTS IN 4MW OF

PRIMARY FUEL USAGE/ IMPORT


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WHAT IT TAKES

SAME EFFORT TO STOP SMOKING?

SAME EFFORT TO REDUCE WEIGHT?

SAME EFFORT TO GET UP IN COLD WINTER

MORNING?

SAME EFFORT TO RESIST SWEET FOR A

DIABETIC?


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DECISION


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DEPLOYMENT


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DETERMINATION


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WHAT IT ACHIEVES

1 MW CONSERVED

CAN BRING BRIGHTNESS IN LIVES OF 40000 FAMILIES.

CAN IRRIGATE 200 ACRES OF FARM LANDS.

SAVES THE COUNTRY 4.5LAKH TONNES OF COAL PER YEAR.

CAN PUMP DRINKING WATER TO HALF THE STATE.

CAN SAVE THE STATE Rs. 7 CRORES.

CAN HELP EDUCATE 12000 KIDS FOR A YEAR

DOES NOT DISPLACE ANY VILLAGE/ SETTLEMENT

INCREASES EMPLOYEE MORAL


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Be proud and happy of havingconserved energy and saved

resource

&contributed to nation building .

It is infectious.

WARNING


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WARNING NOTHING IN THE ABOVE PRESENTATION IS COPYRIGHTED &

SECRET WITHIN THIS 4 WALLS.

NO CASE OF INFRINGMENT OF PATENTS WILL BE RAISED.

REMEMBER EACH & EVERY ISSUES.

PLEASE SPREAD EACH AND EVERY WORD AND INTENT OF THISPRESENTATION TO FAMILY, NEIGHBOURS, COLLEAGUES.

START MONITORING AND CONSERVING AT HOME.

TARGET 8-10KWhrs/ m2/Yr OR 7KWhrs/m2 /month


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THANK YOU & JAI HIND

QUESTIONS

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mailto:[email protected]:[email protected]

energy conservation techniques - copy

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