A Seminar On

Department of Civil Engineering

College Of Engineering And Technology, Akola (MH).-444104

Presented By :Mr. Akshay B. Kathalkar

Energy Saving In

Green Building

Guided By: Prof. R.M. Phuke

Head Of Department:Prof. R.M. Phuke

Content Introduction Green Building Concept Comparison bet. Green Building & convectional

Building Tangible Benefits Intangible Benefits of Green Design Building Energy Consumption Cooling Load Components Approach Conclusion Advantages Reference

Introduction

Refers to a structure and using process that is environmentally responsible and resource efficient throughout a building’s life cycle : from sitting to design, construction, operation, maintenance, renovation, and demolition

Green building – also known as sustainable or high performance building increases the efficiency with which buildings and their sites use and harvest energy, water, and materials.

 The Green Building practice expands and complements the classical building design concerns of economy, utility, durability, and comfort

An early stages some countries like India facing a effect on their economy due to the import building construction material

Green building is energy saving building in electricity power consumption

Green Building Concept

Reduce the overall energy use and maximize potential for renewable energy supply and use

Minimize waste and maximize re-use and recycling both during construction and after occupation

Conserve water resources, enhance water quality, incorporate water sensitive design and minimize vulnerability to flooding

Minimize polluting emission to water air and soil and minimize noise and light pollution

Maximize use of material from sustainable sources

Comparison Between Green Building And Conventional Building

Green Building vs. Conventional Building

Externally : both look alikeBuilding Use: both are sameDifferences 1)Concern for human comfort &indoor environment2)Operational savings

Tangible Benefits

Reduce operating costs Optimize life cycle economic performance Sustainable Saving Energy Saving : 40%-50% Water Saving: 20%-30% Reduction in initial investment

Intangible Benefits of Green Design Environmental benefits Reduce impact on environment

Health and Safety Benefits Enhance occupant comfort

Improve the productivity of occupant

Building Energy Consumption

57%22%

16%

5%

Break-up of Enegry Com-sumption in Building

Air conditon-ing

Area Light

Cooling Load Components

3%

55%26%

16%

A Break Up Of The Heat Gain Through Various Building Components

wall conduction

Glazing Conduction

Internal Gains (Light, People, Computer

4th Roof ConductionQtr

Approach

1. Orientation2. Envelope Measure

Wall, Glazing, shading, , Roof3. Equipment & System

Lighting4. Control

Temperature, Humidity

Orientation Of Building

Sitting of buildings to maximize access to solar gain and minimize over shading

Providing shelter from prevailing winds in the from of trees or landscape design

In cold region incorporating heavy internal walls to store the heat from solar gain

Orientation Of Building

Maximum wide overhang toward East & West for sun ray cutter i.e. shading

Orientation Of Building

Minimize the outer surface of the building direct towards sun it help in summer season to minimize the heat conduction and radiation.

Orientation of Building

The main living are located on the southern facing side and bedroom on north of the building

Envelop Measures

High Glazing Tremendous day lighting, Heat ingress need to balance

High Performance Glass & Glazing 1. Low U- Value

What is U- Value

The value is a measurement to express the heat loss factor of a material

The lower the U- value, the less heat can be transmitted through the material

Unit in SI: W/M2K or W/M2C Formula:U(element)=1/(RSO +RSI +R1+R2)

RSO is fixed external resistance

RSI is the fixed internal resistance

R1,R2 is the sum of the resistance of the building material in the construction

U- Value

Heat transfer due to temperature difference (conduction)

Typical U-ValueOf single glazing

glass(6mm): 5-6W/M2C

U- Value of Convectional Material

Wall & Roof 1. U value: 1.95 W/m2 deg K2. Heat storage is higher Due to higher massConcrete Roof3. U value: 2.5-3.0 W/m2 deg K Hence we want alternative material to

balance it to some extent1. Effective Roof in flat building 2. Efficient wall in multi-storey building3. Advance Glazing System

Wall Option

Brick wall with insulation1. Extrusive polystyrene, Expanded

Polystyrene (thermocol), Glass Wool etc.

Brick wall with air cavity Hollow blocks Autoclaved Aerated Concrete Blocks Saving Potential 3-8%

Insulation Materials- Relative U- Value

Glass wool stuffed: U -Value: 0.25 W/m2 deg C(150mm thick) Thermoco: U- Value: 0.3 W/m2 deg C

(100 mm thick) Extruded Polystyrene: U- value: 0.028W/m2 (60mm thick)

Brick Wall With Air Cavity

The reason cavity insulation keeps heat in is that the polymer and air in the cavity are good insulators

 The increase of sound proofing.

Hollow Blocks

Hollow block needs low maintenance High Durable The painting and color of hollow blocks withstand many

years for external environmental factors. The construction speed is high when compare to

conventional construction systems It has high tensile strength. Economical friendly It maintains the thermal balance, air conditioning

system of any hollow block construction. It reduces the labour cost and total construction cost High heat and water resistant Hollow block construction is technological eco-friendly

construction.

Autoclaved Aerated concrete Block

AAC Block:1. It is composed of fly ash, cement , lime

Aluminum powder and water Unique property:1. Low U- Value: 0.67 W/m2°K2. Reduction in temp possible:4-5°C Economic Benefits:1. 15-20% saving in A/c Load2. Saving in Cement

Advanced Glazing System

Consist of two sheet of glass is spaced apart with hollow aluminum frame

The space between the panes may contain dry air, or be a partial vacuum, or be filled with argon gas.

Argon gas is a low cost, clean, non- toxic, naturally occurring gas with a lower thermal conductance than air.

Spacing is 10-16mm

High Efficiency luminaries & Lighting Controls

Hybrid Solar Lighting Fiber Optical Lighting LED Lighting

Hybrid Solar Lighting

Hybrid Solar Lighting with tracking distributes natural light within the interior of buildings and is fully integrated into the existing artificial lighting systems

Therefore, Hybrid Solar Lighting delivers the benefits of the natural lighting with the convenience and reliability of artificial light

Hybrid Solar Lighting

In any building where a comfortable and healthy indoor environment or energy efficiency plays a role

Fiber Optical Lighting

Fiber optic cables carry only light to the point of illumination. The illuminator and the electricity that powers it can be many yards away from the objects or areas being lit.

For fountains, pools, spas, steam showers or saunas - fiber optic systems are the safest way to provide illumination.

LED Lighting

Because modern LEDs are staggeringly more efficient than other types of lighting, they can save you major money on your electric bills.

For example, one 6-watt LED produces as much light as the 50-watt incandescent bulb that it replaces, and that increase in efficiency will mean a big drop in your electric bill.

Use The Renewable Energy

Use the Advance technology in building for saving convectional electricity by use of renewable energy sources:

1. Solar energy2. Wind energy3. Geo thermal energy

Solar Energy

To achieve the stringent goal of net zero energy for this building.

The high-efficiency SunPower E-Series solar panels were installed on the building with a five-degree tilt to fully optimize.

Geo Thermal System

1. Refrigerant: Envoi mentally Safe Anti – Freezing liquid(water +poplyene glycol)2. Polyethylene pipes underground, Life 50 years3. Length of pipes depends on area conditionedSaving Potential 30 -50%

Lower Operating Costs

Advantages Of Green Building

Conclusion

Green building is a financially, health, and most importantly environmentally responsible idea that more people need to adopt.

The India Green Building Council developed LEED in order to help customers, designers, and builders to work together to create buildings with the minimal impact on the environment possible.

Build the Green Building to undertaken think for “Human Comfortable with eco –friendly”

Use the Fiber lighting and solar electricity system

for minimize the CO2 emission.

Reference

McGraw Hill Construction, Green Building Smart Market Report, 2006 Source: U.S. General Services Administration – survey of 12 portfolio buildings;

Akshay Urja Renewable energy (Magazine), Vol. 6 ,Feb 2013, pg No.32-34

A. Pettinau, F. Ferrara, C. Amorino, CO2-free hydrogen production in a coal gasification pilot plant, 1st International Conference on Sustainable Fossil Fuels for Future Energy – S4FE 2009

Internet Source• www.fchea.org

Thank You