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Living in harmony with Nature Renewable Energy In Buildings Mar 2014 ISHRAE : Acre Serve Green : 204/255/153 Black : 41/41/41 Dk Green : 51/102/0 Mid Green.

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Presentation on theme: "Living in harmony with Nature Renewable Energy In Buildings Mar 2014 ISHRAE : Acre Serve Green : 204/255/153 Black : 41/41/41 Dk Green : 51/102/0 Mid Green."— Presentation transcript:

1 Living in harmony with Nature Renewable Energy In Buildings Mar 2014 ISHRAE : Acre Serve Green : 204/255/153 Black : 41/41/41 Dk Green : 51/102/0 Mid Green : 0/204/0 Tejwant Navalkar

2 Living in harmony with Nature  The need for Renewable Energy  Renewable Energy – An Introduction  Solar Energy – An Overview  Traditional Solar PV Solutions  Solar Thermal Solutions  CASE STUDY – A 240.7m tall Building Building Features Solar Hot Water Schematic Challenges in implementing Renewable Energy Solution for Hot Water Generation  Other Applications AGENDA

3 Living in harmony with Nature In INDIA, despite POWER being the life line of Progress there is : Acute shortage of Energy, Power Cuts leading to Erratic Power supply and loss of production, comfort. Ever rising cost of power per unit due to high cost of distribution and transmission, subsidies and power thefts Increasing deficit between Power Generation and Demand resulting out of rapid infra-structural development and industrial growth High Environmental damage caused by traditional Energy Resources and Power Plants resulting in global warming Average Indian is being held to ransom by the Oil Producing countries Energy Scenario in INDIA

4 Living in harmony with Nature Alternate Source of Energy is the need of the hour and would provide the means to : Combat rising energy prices by harnessing Perpetual sources of Energy - Wind, Solar, Water and Geo-Thermal Energy Virtual ZERO Global Warming Achieve Freedom and Insulation from Crude Oil Price fluctuations Self Reliance, since Renewable Energy Generation can be set up at point of usage, thereby reducing Transmission Losses and Pilferage Increase bottom lines due to guarantee in meeting production schedules, minimal loss of productive time and fixed price of energy Why Renewable Energy

5 Living in harmony with Nature

6  Solar Photovoltaic (PV) Systems  Solar Thermal Solutions  Wind Turbine  Bio-gas for cooking & electricity generation RENEWABLE ENERGY : An Overview

7 Living in harmony with Nature The Power of Solar – Some Awesome Figures SOLAR Provides the best alternative for meeting the Industrial and Domestic needs the world over The sun provides with 174 Petawatts (PW) of solar energy, The world uses 16 Terrawatts (0.009%) of this energy today More than 50% of Energy Needs are thermal (Heat) 1 Terrawatt = W 1 Petawatt = W

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9 What is Photovoltaics In Photovoltaic (solar) systems light energy is converted into electricity. A Solar Cell is the basic element of each photovoltaic system. Solar cells produce direct current electricity from light, which can be used to power equipment or to recharge a battery. The first practical application of photovoltaics was to power orbiting satellites and other spacecraft.

10 Living in harmony with Nature Components of Solar Modules

11 Living in harmony with Nature Solar Photovoltaic based Solutions Solar Farms for Uploading to Grid – MW scale Solar Off-Grid Solutions for Diesel reduction – 100 KW scale Solar Stand-alone systems for small systems – W scale PV special solutions Telecommunications Special architectural applications PV Off-grid systems Free field plants On-roof installations PV for roof top applications Public buildings Private buildings PV power plants On-roof PV plants Large-scale free field KW- Scale (Small) 100KW- Scale (Med) MW- Scale (Large)

12 Living in harmony with Nature Typical Off-grid Solar PV Systems

13 Living in harmony with Nature Typical Solar Based Backup Grid Solar Panels Battery Bank Grid Supply D G Set 3-Ph Inverter Solar Panels Battery Bank Grid Supply 3-Ph Inverter MAIN LT PANEL

14 Living in harmony with Nature Challenges in Implementing Photovoltaic (PV) Systems Storage is mainly Battery based and inherits its inefficiencies Battery replacement is a recurring cost Most Electrical equipment run on AC Supply, hence PV System requires 3 levels of conversions : Battery Charging/ Discharing Inverter DC  AC This results in about 20% to 27% additional losses Lack of Net Metering for small and medium systems Large PV Systems rely heavily on government subsidies and policies

15 Living in harmony with Nature Storage Batteries are like bottles The Time taken to fill-up or empty the bottle is determined by the bottle neck. Similarly time taken to charge a battery is determined by the Charge rate of a battery Simply increasing battery capacity does not ensure capturing the full energy generated by Renewable Resources Batteries are like Bottles

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17 Solar Water Heaters – Evacuated Tube Collectors

18 Living in harmony with Nature Domestic Solar Water Heaters Consumption Pattern

19 Living in harmony with Nature Domestic Solar Water Heaters Generation Deficit Pattern

20 Living in harmony with Nature Challenges in Implementing Solar Thermal in Buildings As seen from the previous charts, the Domestic Hot Water Requirement Peak does not match with the generation peak Storage of Thermal Energy is not used A lot of generated energy is wasted through overheating and therefore steaming due to lack of demand at generation peaks Very little control on the temperature and availability Due to lop-sided generation and utilization, hot water availability is largely on first come first served basis Lack of terrace areas to cater to the complete demands of the building

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22 Phase Change Materials (PCM) are hydrated salts / organic mixtures that have capacity to store large amount of heat in the form of Latent Heat. This Latent Heat is absorbed or released when the materials change state from solid to liquid or liquid to solid. The PCM retains its latent heat without any change in physical or chemical properties over thousands of cycles. Various specific temperature PCM’s are commercially available in the market for various applications. What are Phase Change Materials PCM packed in HDPE/PP nodules

23 Living in harmony with Nature Properties of a Typical Phase Change Material Pluss Polymers Pvt. Ltd.

24 Living in harmony with Nature Thermal Storage using Phase Change Materials Building Flats/ Apartments

25 Living in harmony with Nature

26 CASE STUDY – 200m Tall Building The Proposed Residential Project is spread over 365,735 sq.ft of land and is located Central Mumbai. The Project has the following features:  G + Podium floor(5nos) + atrium + 59floors with 2BHK, 3BHK and 4BHK flats and 5BHK (Penthouses)  Sale Building having height of approximately 240.7m

27 Living in harmony with Nature CASE STUDY – 200m Tall Building  BASIC PROJECT DATA :  Built-up Area : Approximately 44,700 sqm  Terrace Area : About 400 sqm in two levels  Total Flats : 148 (Mix of 2BHK, 3BHK, 4BHK & Penthouses)  Expected occupancy : 1100  Total Water Requirements : 140,000 litres/day  Hot Water Requirements : 55,000 litres/ day

28 Living in harmony with Nature CASE STUDY – 200m Tall Building  CONSTRAINTS IN IMPLEMENTING RENEWABLE ENERGY :  Limited Terrace Area (400sqm in two levels)  This can only accommodate provide 7,000 litres solar Water heater  Total Requirement was for 55,000 litres

29 Living in harmony with Nature OH Hot Water Tank ZONE – 1 ZONE – 3 Gr. Floor 36 th Floor 56 st Floor 58 th Floor 38 th Floor 37 th Floor Terrace Floor 68 nd Floor OH Domestic Water Tank 18 th Floor 19 th Floor Solar Hot Water Distribution Schematic 57 th Floor ZONE – 4 PCM Storage Tank ZONE – 2

30 Living in harmony with Nature CASE STUDY – 200m Tall Building  SOLUTION IN IMPLEMENTING RENEWABLE ENERGY :  Only Solar Thermal Collectors of 400sqm installed  A small buffer vessel is located at the terrace level for directly drawing heat energy from collectors (conventional thermo- siphon)  Three Intermediate PCM Tanks of about 20m3 at three levels installed  Thermostat controlled Circulating pumps use to capture store heat in the intermediate tanks

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32 INDUSTRIAL PROCESS HEATING - REQUIREMENTS

33 Living in harmony with Nature SOLAR THERMAL APPLICATIONS

34 Living in harmony with Nature SOLAR THERMAL APPLICATIONS

35 Living in harmony with Nature SOLAR COOLING APPLICATION

36 Living in harmony with Nature Solar Dehydration in Food Processing Open Sun DryingSolar Air Drying (Dehydration) Delayed DryingFast Drying Problems of contamination by birds, insects, etc No contamination Less Hygenic, Poor Visual qualityClean and completely hygenic and superior texture and quality Inferior Product QualityBetter Quality of product Drying possible only on Sunny daysPossible on partly cloudy days as well as monsoons using electrical backup Uneven DryingEven Drying Not suited for large scale productionIdeally suited for a cluster or community initiative More nutrient lossesNutrients retained Low Proift MarginsBetter profits due to superior product

37 Living in harmony with Nature Solar Air Dryers in Food Processing

38 Living in harmony with Nature Solar Based Air Drying Applications

39 Living in harmony with Nature  It is extremely important to understand that NO single Renewable Source of Energy can fulfil the complete annual requirements of an end user  It is essential to study the customer's requirement, the availability of renewable resources in the specific location  Requirement of customized solutions based on specific needs  The key to making Renewable Energy Solutions effective, is I in providing Integration of the various Renewable Energy Resources Conclusion

40 Living in harmony with Nature Renewable Energy Usage – The Beneficiaries

41 Living in harmony with Nature Tejwant Navalkar : Contact Details Tejwant Navalkar Engineering & Renewable Energy Solutions Your Partner in DFX D esigning F or e X cellence Tel: Fax:

42 Living in harmony with Nature


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