Transcript
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
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