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Programme on Solar Water Heaters Solar Thermal Division Ministry of New

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Title: Programme on Solar Water Heaters Solar Thermal Division Ministry of New


1
Programme on Solar Water Heaters Solar
Thermal Division Ministry of New Renewable
Energy 20th November, 2009
2
Solar Resource in India
  • 5000 trillion kWh solar radiation incident over
    India in a year
  • Daily solar radiation 4 - 7 kWh per sq. m.
  • Most parts of the country receive solar radiation
    sufficient enough to effectively utilize solar
    energy systems
  • Typically, 1.5 to 2.0 hectare of open space
    required for one mega watt solar power plant.
  • On 1 land area of India about 15,00,000 MW
    capacity solar plants can be setup

3
Major Advantages
  • - Long Life (More than 20 years)
  • - Low Maintenance - High Reliability - Modular
    Nature
  • - No Recurring Fuel Requirement - No Emission
    of Pollutants
  • Limitations
  • - High Initial Capital Cost
  • - Need for Storage
  • - O M Issues

4
Approach
  • Generate energy near point of consumption .
  • Expansion of decentralized off-grid applications
    to save conventional fuel through deployment of
    solar water heaters, industrial process heat
    systems, solar cookers, solar dryers and air
    heating systems.
  • Promotion of green buildings aimed at to improve
    energy efficiency of the envelop and integration
    of solar energy devices/ systems into the
    building design.
  • RD activities aimed at to develop new
    applications, cost reduction and improving
    reliability.
  • Grid power generation at multi megawatt scale in
    11th plan to generate experience and create
    volumes expected to grow once costs start
    reducing.

5
Solar Thermal Technology
  • Solar thermal collectors capture solar radiation
    and converts it into heat for various useful
    applications.
  • Solar thermal technologies developed for number
    of applications
  • Solar water heating
  • Solar cooking
  • Solar air heating and drying of agricultural,
    food and other products
  • Space heating and cooling
  • Steam generation
  • Electric power generation

6
Solar Thermal Energy Systems
7
Solar Water Heating Systems Salient Features
  • A commercially viable technology
  • Can provide hot water at 60-80oC. Integrated with
    storage tank electrical back up.
  • Saves electricity or furnace oil
  • Pays back cost in 3 - 4 years.
  • Suitable for homes, hotels, hospitals, hotels,
    guest houses, institutions, dairies, industry
    etc.
  • Techno-economic potential 40 million sq. m. of
    collector area i.e. 2 billion liters of hot water
    per day

FPC based system
ETC based system
8
Solar Water Heating Systems Energy Savings
  • A 100 lpd system
  • - Replace an electric geyser of 2 kW capacity
  • - Saves around 1200 units of electricity in
    homes or
  • - Saves around 140 liters of diesel/ furnace
    oil in a year in industries commercial
    establishments
  • 1 lakh systems installed in a city can result in
    100 MW of peak load shaving if 50 of the
    domestic systems are assumed to be in use at a
    time,
  • 40 million sq. m. potential could lead to peak
    load shaving of 14,000 MW (70 systems in homes)
    apart from saving of enormous amount of
    electricity fossil fuels in homes other
    establishments besides abating CO2 emissions in
    atmosphere

9
Solar Water Heating Systems Financial Provisions
  • Interest subsidy to provide loans _at_
  • 2 to individuals
  • 3 to institutional users
  • 5 to commercial users
  • Interest free loans to domestic users of N-E,
    Hilly states, Islands Chattisgarh, Jharkhand
    Uttrakhand.
  • Capital subsidy equivalent to upfront interest
    subsidy of Rs. 1750 for institutions Rs. 1400
    for commercial establishments. For housing
    complexes _at_ Rs. 1900/ sq. m. of collector area
  • Special demonstration projects in States of NE,
    JK, Islands at sites of high visibility to
    promote

10
Solar Water Heating Systems Measures taken by
States/MCs
  • Model amendment to building byelaws issued in
    1993 to make solar water heaters mandatory in
    functional buildings
  • Status so far
  • 21 States issued GOs for amendment in building
    bye-laws
  • Bye-laws amended/ GOs issued
  • Karnataka (1), Gujarat (1), W.B.(1),
    Maharashtra (10),
  • A. P. (18), UP (10), Chatisgarh(1)
  • Rebate in electricity tariff
  • Rajasthan , Karnataka, West Bengal,
    Assam,
  • Haryana Uttarakhand. Maximum
  • Rebate in property tax
  • Thane, Amravati, Nagpur Durgapur ( 6-
    10)
  • Capital subsidy by States
  • Delhi (Rs. 6,000/ per 100 LPD system)

11
Solar Water Heating Systems Progressive
Achievements Plans
  • 10th Plan 1.25 million sq. m.
  • 4.50 lakh sq. m. during 2007-08. 5.5 lakh sq. m.
    in
  • 2008- 09, 3.0 million sq. m. total so far
  • Perspective Plans 5 million (11th Plan) 20
    million by 2022 40 million by 2030
  • 64 BIS approved manufacturers of FPCs 65 MNRE
    approved suppliers of ETC systems
  • Progress is not as per the desired level

12
Solar Water Heating Systems Major Issues
  • Installation of inappropriate capacity
  • Integration of conventional system with SWH
    system
  • Systems design keeping heat mass transfer
  • principles in mind pressure drop pumping
    power-
  • pipe size and its arrangements etc.
  • System engg. With water quality compatibility
    of
  • materials with water quality ( SSsaline water
    )
  • Welding damages to materials
  • Designing the system for sub zero temperatures

13
Major Issues - Continued
  • Absence of information system
  • Difficulties in getting soft loan from Banks
  • - Few Branches are eligible for providing soft
    loan
  • - Subsidy amount is adjusted only after
    receiving the funds
  • from IREDA
  • Repairing Maintenance facilities not easily
    available
  • Limitations of Nodal Agencies Tech.
    Infrastructural

14
Solar Water Heating Systems Action Plan 2009-10
  • NEW INITIATIVES
  • Best Practices are being evolved
  • Supply chain to be improved Creation of help
    line for users
  • HRD in repairing maintenance - ITI curriculum
  • Energy Audit of some big and important cities
    Potential of SWH
  • Concentration on Few Cities Survey of 33 Cities
    being taken up
  • Tourist areas coverage in hill states
  • Tapping potential in selected Industries
    Sericulture, Textile, Tea

15
Solar Water Heating Systems
  • ACTIVITIES TO BE CONTINUED
  • Central Ministries State Deptts. to be directed
    to mandate their establishments for installation
    of solar water heaters
  • Amendment of building bye-laws to continue
  • Builders Developers to be pursued to
    incorporate systems in new building housing
    complexes
  • Planned publicity awareness campaign including
    organization of solar fairs in residential
    colonies
  • Efforts to be made on easy availability of loans
    rebate in property tax/ electricity tariff

16
Solar Steam Generating Systems
  • Suitable for community kitchens other
    applications including sterilization laundry in
    hospitals
  • Comprise of automatically tracked parabolic
    dishes.
  • Worlds largest system installed at Shirdi for
    cooking food for 20,000 people/ day
  • A 92 tonne air conditioning plant with 60 dishes
    recently commissioned at TVS Suzuki factory near
    Chennai. A few more under installation.
  • A typical system of 100 sq. m. area costing Rs.
    12-14 lakhs can save around 4,500 litres of
    diesel per year
  • Support up to 50 available from MNRE
  • Payback period is around 4 yrs with Govt. support

17

Solar steam cooking system at
Tirupati for 15,000 people
18
Solar Steam Cooking System at Leh (Inside
view)
Kitchen before solar system
Kitchen after solar system
19
Solar Steam System at Global Hospital, Mount Abu
  • - Installed by Brahmakumaris in 2003.
  • - 20 dishes systems, each of 12.6 sq. m. area
  • - Generates 1200 kg of steam per day at around
    180c
  • - 60 of steam being used for sterilization
    in laundry rest for cooking
  • - System functioning since then satisfactorily

20
Solar Steam system at a Laundry
  • 240 sq. m. solar dish system installed at Gajraj
    Cleaners, Ahmed Nagar, Maharashtra for washing
    cleaning
  • System hooked up with existing boiler is
    generating about 105 kg of steam per hour at 5 kg
    pressure
  • Installed in 2004 is functioning satisfactorily
  • Annual saving through furnace oil is around
    10,000 liter/yrs
  • Paid back the cost in 4 yrs with depreciation
    benefit
  •  

21
Large Size Solar Dish for Steam Applications
  • Being installed on demonstration basis at
    present
  • Fully automatically tracked dish with 160 sq. m.
    area
  • Generates about 100-120 kg of steam per hour
    depending on location sunshine
  • Costs Rs. 45-55 lakhs per dish
  • Pay back 5 to 6 years with Rs. 12, 000 as CFA
    from MNRE

22
Biogas Plant based on Kitchen Wastes
23
Small Scale Biogas Plant Developed by BARC for
Kitchen/ Food Wastes
24
Wet Garbage Treatment Plant at HAL, Banglore.
25
Canteen Waste Treatment, Mahindra Mahindra Ltd.
Mumbai
26
Kitchen / Canteen Waste Treatment Plants
27
  • Thank you
  • MNRE website www.mnre.gov.in

28
Thank You www.mnre.gov.in
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