My “Energy Efficient” Home

For the purpose of NDTV-Grundfos Mission Energy Challenge 2014

Ravi Teja PabbisettyHouse No 42, Sharada NagarVanasthalipuramHyderabad – 500070

Location (Latitude, Longitude): 17.326204, 78.586840

Energy Efficient home by design!

Elevation of thebuilding was carefullydesigned to avoid heatingress

• Heat reflective tiles(20% of the area)

• Heat reflective whitepaint (10% of thearea)

•Rat-trap based bricklayout for the elevationwall (50% of the area)

Other Eco-friendly features!

• Ground water rechargingAll the rain water falling on our built-up area, is channelized into a 4 feet hole, allowing for ground water recharging!

• Use of fly-ash cementFor all the structures (except for slabs), PPC was used instead of OPC

• Harvest day-lightWe have designed our house, keeping in mind the advantage of allowing day-lighting

Steps I will carry out to reduce

energy consumption

Quantitative description of step

1. Paint/tile the roof-top with high SRI

paint/tiles for avoiding heat ingress

on the top floor.

The entire area of 1100 sqft of rooftop area will

be insulated from the exterior, providing benefits

of reduced heat ingress into the house.

2. To add to the saving from the SRI

paint, the inside part of the roof will

be dropped by 4-6 inches, creating a

false ceiling.

This structure will trap air between the main and

the new roof, which will help not conduct heat

from the top of the building into the rooms.

3. The entire house will be converted

with energy efficient equipment's for

lighting and refrigeration

a. All lighting fixtures will be converted to CFL’s,

LED’s and T5’s

b. Installation of minimum of 3-star rated

appliances (Installed a 5-star geyser!)

4. An Online tool to campaign the

benefits of Rooftop Solar PV, which

include internal and external

communication

It is an online tool which will help assess the

rooftop potential for a solar PV across the region

of Hyderabad, India.

Challenge!

“High Albedo” Rooftop

• “Heat reflective” Rooftop• Rooftop was completely coated with a “heat reflective” SRI coat over the plastered, water proofed surface

Before coat

http://www.suryacem.com/cool.html

After coat

False ceiling!

• False ceiling!• On the top floor, for both the rooms the ceiling was dropped by 4-5 inches to create an air gap, providing additional heat insulation

Room #1 with 60% area for false ceiling Room #2 with 100% area for false ceiling

EE lighting

LED Reading lights!!

LED’s installed in the false ceiling

Fixture Watt # Savings

Phillips Tornado CFL

5W 3

80% savings15W 2

24W 2

Surya'sSuper Bright

(FTL)36W 3

5-star rated by BEE

LED 3W 13

Havellstubelight

22W 2T8 LED

tubelight

References

http://www.havells.com/Product.aspx?s=107

http://download.p4c.philips.com/l4bt/3/334081/tornado_334081_ffs_aen.pdf

http://www.surya.co.in/

EE Equipment & Appliances

• EE equipments & appliances• 4-star refrigerator, 5-star geyser• Refurbishment of AC before summer

4-Star Refrigerator

5-Star geyser

After refurbishment of AC

AC refurbishment pictures

Creating Social Awareness!

• Created an Online-tool for estimating the rooftop potential for installing Solar PV for the region of Hyderabad

http://rify.net/solar-power/

Creating Social Awareness!

• Created an Online-tool for estimating the rooftop potential for installing Solar PV for the region of Hyderabad

Date No of clicks

29 April 2014 288

18 May 2014 361

22 May 2014 383

Steps proposed Status Comments

Creation of a false ceiling with an air gap

Successfully completed

Both the rooms are created with 4 and 5 inch air gaps respectively,

Installation of energy efficient lighting

Successfully completed

An overall of 25 fixtures have been changed for energy efficient lighting!

Installation & refurbishment of electrical

& electronic appliances

Successfully completed

Procured 5-star electric heater and AC refurbishment was done for beating the

summer heat energy efficiently!

Paint the roof-top with high SRI paint for avoiding

heat ingress on the top floor.

Successfully completed

“Surya’s Cool home” coat was applied which has a reflectivity of 90%!, value above the IGBC/ECBC standard of 70%

An Online tool to campaign the benefits of Rooftop Solar PV, which

include internal and external communication

Successfully completed

Successfully deployed the tool intopublic forums like facebook, twitter,

LinkedIn. Have got good feedback via phone, email, etc.

Into the future

• Composting of food and organicwaste

• Time frame: Within 2 months

• Solar PV• We have plans to install a SolarPV system on our rooftop with acapacity of 0.75-1 kW (tosupport for lighting and fewother systems)• Time frame: Within 2-3months