an evaluative study of energy efficient building (ppt)

8/10/2019 An Evaluative Study of Energy Efficient Building (Ppt)

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Anshul Sheokand

Roll No. 13201004

Environmental Engg.


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CONTENTSAbstract

Introduction

Literature Review Features of HAREDA Building

Brief of the criteria for rating

Scoring points for GRIHA

Evaluation procedure of criterion of GRIHA

Conclusions

References


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Abstract Elucidates the criteria followed by GRIHA

Presents an evaluative study of current status of

HAREDA(Haryana Renewable Energy DevelopmentAgency) Building(initially rated 5 star by GRIHA-Green Rating For Integrated Habitat Assessment)


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Introduction

GRIHA green building design evaluation systemA tool to design,operate, evaluate and maintain resource efficient healthy andintelligent building.

The aim of a green building design is to minimize the demand on non-renewable resources, maximize the utilization efficiency of theseresources, when in use, and maximize the reuse, recycling, andutilization of renewable resources.

In sum, the following aspects of the building design are looked into inan integrated way in a green building:-

o Site planningo Building envelope design

o Building system design (HVAC) heating ventilation and airconditioning, lighting, electrical, and water heating)o Integration of renewable energy sources to generate energy onsite.o Water and waste managemento Selection of ecologically sustainable materials (with high recycled

content, rapidly renewable resources with low emission potential, etc.).o Indoor environmental quality (maintain indoor thermal and visual

comfort, and air quality)


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Literature Review CSE(2013-14) report commented that green buildings are overrated. This is a very

critical issue to assess how the green rated buildings are performing and delivering.

Kumar, S.,K. Madhav and A. Deshmukh (2010)study based on performancebased rating and energy performance Benchmarking for commercial buildings in

India. Study specify the need for benchmarking and performance based rating inthe Indian context and also discusses the framework for national level datacollection.

Sabapathy, A., and S.K.V Raghavan (2010) provides a summary of an energybenchmarking study that uses performance data of a sample of InformationTechnology facilities in Bangalore. The EPI (energy performance index)and

AAhEPI(annual average hourly energy performance index) were modelled toidentify the factors that influence energy efficiency.

Azad, A.S., and J.A. Usmani(2013)presented the energy saving analysis of highperformance commercial buildings in India. This study introduces an idea that asignificant amount of energy saving can be achieved by converting a ConventionalBuilding to Green Building.

Bhatt, R.,J.E.M. Macwan and V. Patel(2010)presented a case study for an analytichierarchy process approach for criteria ranking of sustainable building


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Features of Akshya Urja BhawanThe Renewable Energy Department, Haryana/HAREDA has constructed its

office building in a plot of area 0.96 acres at institutional Plot No.1, Sector-17,Panchkula.

This building is based on Solar Passive design techniques in compliance with

Energy Conservation Building Codes (ECBC-2007) & GRIHA rating(2012) ofMinistry of New & Renewable Energy, Govt of India. . This building has beenprovided 5 star GRIHA rating (Provisional) by Association for Developmentand Research of Sustainable Habitats (ADaRSH) which is first of its kind inNorth India and first Govt. building in India. Some of the special features ofthis building are as under:-


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Grid interactive solar power plant of 42.5 KW has been installed along withbattery bank for providing electricity. This power plant generates an average of180 units/day which is sufficient to meet the indoor as well as outdoor light,fan, computer and other small loads of the building.

Solar Chimneys have been provided on South and North face of the building tochannelize natural draft of cool air for natural cooling. The mechanism of thissystem is such that the air trapped in the solar ducts gets heated up and starts

rising upwards due to which vacuum is created at lower end of ducts. Thisresults in flow of room air towards solar ducts.


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Solar Water Heating System of 600 LPD capacity has been provided for hotwater requirement in the building.

Inclined Louvers in court yard to cut the summer sun and allow winter sun inbuilding.


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Energy Efficient Lighting such as LED based lights and T5 tubes have beenused. Accordingly, the lighting energy consumption has been reduced by 92%

with respect to normal building.

The Energy Consumption of the air conditioned areas of this building is 52

KWhr/m2/year against the consumption of 200 Kwhr/m2 /year in the normalbuilding i.e. 75% less than normal building.

The Energy Consumption of the non air conditioned areas of this buildingshall be 12 Kwhr/m2/year against the consumption of 160 Kwhr/m2 /year in thenormal building i.e. about 92% less than normal building.

For Air Conditioned areas an internal temperature is 24 deg C plus minus 1 and

in non Air Conditioned areas an internal temperature of 28 deg C plus minus 2. Good plantation in the building with herbal shrubs. Deciduous trees are

planted on the West face of the building to allow winter heat gain whilekeeping the summer sun out. Evergreen bushes are planted on the North andEast to cool the air as it enters the building. Evergreen high foliage planted inthe berm along the main road to reduce the noise.


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Methodology

(Brief of the criteria for rating)The criteria have been categorised as follows:

1. Site planning

Conservation and efficient utilization of resource

Objective: To maximize the conservation and utilisation of resources (land,

water, natural habitat, fauna, and energy) conservation and enhance efficiencyof the systems and operations.

Criteria 1-Site Selection

Criteria 2 -Preserve and protect the landscape duringconstruction/compensatory depository forestation.

Criteria 3 - Soil conservation (till post-construction)

Criteria 4-Design to include existing site features.

Criteria 5-Reduce hard paving on-site and /or provide shaded hard- pavedsurfaces

Criteria 6 Enhance outdoor lighting system efficiency.

Criteria 7-Plan utilities efficiently and optimize on-site circulation efficiency


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Health and well beingObjectives :-To protect the health of construction workers and prevent pollution.Criterion 8 -Provide at least, the minimum level of sanitation/safety facilities for

construction workers.Criterion 9-Reduce air pollution during construction.

2. Building planning and construction stageConservation and efficient utilization of resourcesObjective:-To maximize resource (water, energy, and materials) conservation and

enhance efficiency of the system and operations.Water

Criterion 10 -Reduce landscape water requirement.

Criterion 11-Reduce building water use.Criterion 12 - Efficient water use during construction.

Energy: end useCriterion 13 -Optimise building design to reduce the conventional energy demandCriterion 14-Optimise the energy performance of the building within specified

comfort limits.


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Energy: embodied and construction

Criterion 15-Utilization of f ly ash in the building structure

Criterion 16-Reduce volume, weight, and time of construction by adopting anefficient

Criterion 17-Use low-energy material in the interiors.Energy: renewable

Criterion 18-Renewable energy utilization.

Criterion 19-Renewable energy - based hotwater system.

Recycle, recharge, and reuse of water

Objective: To promote the recycle and reuse of water.

Criterion 20 -Waste- water treatmentCriterion 21-Water recycle and reuse (including rainwater).

Waste management

Criterion 22 Minimize waste generation

Criterion 23-Reduction in waste during construction


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Criterion 24-Efficient waste segregation

Criterion 25-Storage and disposal of waste.

Criterion 26-Resource recovery from waste

Health and well-being

Objective: To ensure healthy indoor air quality, water quality, and noise levels, andreduce the global warming potential.

Criterion 27 - Minimize ozone depleting substances

Criterion 28-Ensure water quality

Criterion 29 -Acceptable outdoor and indoor noise levels.

Criterion 30 -Tobacco and smoke control.

Criterion 31 -Universal accessibility3. Building operation and maintenanceObjective:-Validate and maintain green performance levels/adopt and propagate

green practices and concepts.

Criterion 32 -Energy audit and validation


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Criterion 33-Operation and maintenance protocol for electrical and mechanicalequipment.

4. Innovation

Criterion 34-Innovation points.


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Scoring Points For GRIHA Points scored Rating

5060 - One star

6170 - Two stars7180 - Three stars

8190 - Four stars

91100 - Five stars


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CRITERION OF GRIHA


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ConclusionsAs per the recent published report by Centre for science andenvironment(CSE-2014) claim that buildings rated by the IGBC and GRIHA

which are claiming to save 30-50 percent energy and 20-30 percent water wasnot supported by data or evidence of compliance and performance of eachrated building.

Several state governments were giving fiscal incentives and allowances ofextra built up area to developers to promote private green rating programmes .The report points to a lack of stringent and transparent monitoring of actualenergy and resource use during buildings operation and functioning.

So this evaluative study of HAREDA building which has been rated 5 star by

GRIHA(2012) is to check the present relevancy of that ratings .This is becauseas after the start of operations in the building various components may getvitiated from its original state of condition. So this study may act as acountercheck to the first audit report of HAREDA building and may predictthe anomalies in functioning of various components of building.


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References Kumar, S.,K. Madhav and A. Deshmukh (2010).Performance based rating and energyperformance benchmarking for commercial buildings in India

Centre for science and environment(2013-14).Green building rating:overrated Bhatt, R.,J.E.M. Macwan and V. Patel(2010).Analytic Hierarchy Process Approach for

criteria Ranking of Sustainable Building Assessment:A Case Study

Sabapathy, A., and S.K.V Raghavan (2010).Energy efficiency benchmarks and theperformance of LEED rated buildings for Information Technology facilities in Bangalore,India

Azad, A.S., and J.A. Usmani(2013). Energy Saving Analysis of High Performance Commercial Buildings in India Administrative Staff College of India and Natural Resources Defense

Council(2014).Greener construction saves money: Incentives for energy efficientbuildings across India

Green Rating for Integrated Habitat Assessment (GRIHA),National Rating System ForGreen Buildings(Ministry of New and Renewable Energy, Government of India)

Haryana Renewable Energy Department(website)

an evaluative study of energy efficient building (ppt)

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