Print SOLAR THERMAL SCHEMES
SOLAR THARMAL PROGRAM
1.Solar Water Heating Systems
2.Solar Cooking Systems
3.Solar Steam Cooking System
4.Parabolic Concentrator Solar Water Heating Systems Introduction Solar water heater consists of a collector to collect solar energy and an insulated storage tank to store water. The solar energy incident on the absorber panel coated with selected coating transfers the heat to the riser pipes underneath the absorber panel. The water passing through the risers get heated up and are delivered to the storage tank.
The recirculation of the same water through absorber panel in the collector raises the temperature upto 68ºc + 5 ºc on a good sunny day. The total system with solar collector, storage tank and pipelines is called solar hot water system. Based on the collector system, solar water heaters can be of two types: ·
Flat Plate Collectors (FPC) based Solar water heater where radiation is absorbed by Flat plate collectors which consists of an insulated outer metallic box covered on the top with glass sheet. Inside there is blackened metallic absorber with built in channels or riser tubes to carry the water. The absorber absorbs the solar radiation and transfers the heat to the flowing water. ·
Evacuated Tube Collectors (ETC) based Solar Water Heaters is made of double layer borosilicate glass tubes evacuated for providing insulation. The outer wall of the inner tube is coated with selective absorbing material. This helps absorption of solar radiation and transfers the heat to the water which flows through the inner tube. Solar water heater is being used for heating water in homes, factories and other commercial and institutional establishments. It has life of 15-20 years. By use of solar water heater of 100 litres capacity results in annual savings of app. 1250 units of electricity.
At present there is no any subsidy is admissible on Solar Water Heating Systems. UPCL provides rebate of Rs. 100/- per month for 100 LPD Solar Water Heating System on electricity bills to consumers. Below mentioned bar graph shows the yearwise installation of solar water heater and cumulative installation of solar water heater till date from FY 2010-11 onwards.
Detail of Year Wise Solar Water Heating Systems Installation in Uttarakhand
| S.No. | Year | Capacity Installed in LPD | App. Area in Sq. Mtr. |
| 1 | 1986-87 | 30200 | 604 |
| 2 | 1988-89 | 9600 | 192 |
| 3 | 1989-90 | 10900 | 218 |
| 4 | 1990-91 | 1700 | 34 |
| 5 | 1991-92 | 6700 | 134 |
| 6 | 1992-93 | 9500 | 190 |
| 7 | 1993-94 | 1700 | 34 |
| 8 | 1994-95 | 191400 | 3828 |
| 9 | 1995-96 | 1000 | 20 |
| 10 | 1996-97 | 1000 | 20 |
| 11 | 1997-98 | 2300 | 46 |
| 12 | 1998-99 | 6800 | 136 |
| 13 | 1999-2000 | 6900 | 138 |
| 14 | 2000-2001 | 8000 | 160 |
| 15 | 2003-04 | 13700 | 274 |
| 16 | 2004-05 | 12500 | 250 |
| 17 | 2005-06 | 42000 | 780 |
| 18 | 2006-07 | 68100 | 1222 |
| 19 | 2007-08 | 41400 | 771 |
| 20 | 2008-09 | 151200 | 3024 |
| 21 | 2009-10 | 193600 | 3372 |
| 22 | 2010-11 | 167425 | 2999 |
| 23 | 2011-12 | 316575 | 5224 |
| 24 | 2012-13 | 520300 | 8152 |
| 25 | 2013-14 | 520000 | 8211 |
| 26 | 2014-15 | 462000 | 7090 |
| 27 | 2015-16 | 503750 | 7575 |
| 3300250 | 54698 |
The Jawaharlal Nehru National Solar Mission (JNNSM)-one of the eight missions under National Action Plan on Climate Change was launched by the Prime Minister on 11th January 2010, which is a measure initiative of government of India and state govt. to promote ecological sustainable growth while addressing India’s energy security challenge. To promote off grid applications of Solar energy (both SPV & Solar Thermal) for meeting the target set in JNNSM, UREDA has installed a various capacity Solar Water Heating System under JNNSM.
The categorize benchmark has been finalized by MNRE for 2013-14 is as below.
| SI NO | Type of System | Category | Previous year benchmark cost Per sqm for 2012-13 (Rs/sqm ) | New benchmark cost Per sqm for 2013-14 (Rs/sqm ) |
| 1. | Evacuated Tube Collectors (ETC) | Domestic | 10000 | 8500 |
| Commercial | 10000 | 8000 | ||
| 2. | Flat Plate Collectors (FPT) | Domestic | 11000 | 11000 |
| Commercial | 10000 | 10000 |
List of Schools for Installation of Solar Water Heating Systems (2019-20)
Group-A
| Sl.No. | District | Name of School | Proposed Capacity (In LPD) |
| 1 | Haridwar | K.G.B.V., Harjoli, Narsan | 500 |
| Boys Hostel, Laldhang, Bahadarabad | 1000 | ||
| Boys Hostel, Alipur, Bahadarabad | 1000 | ||
| K.G.B.V., Ranimajra, Bahadarabad | 500 | ||
| Girls Hostel, Bandiwala, Bhagwanpur | 1000 | ||
| Girls Hostel, Gobardhanpur, Khanpur | 1000 | ||
| 2 | Udham Singh Nagar | Girls Hostel, Bajpur | 1500 |
| K.G.B.V., Sitarganj | 1500 | ||
| 3 | Dehradun | Girls Hostel, Kalsi | 2000 |
| Girls Hostel, Tyuni | 2000 | ||
| Special Residential Hostel, Rajpur Road | 2000 | ||
| Special Residential Hostel, Nabha House, Rishikesh | 1000 | ||
| 4 | Nainital | K.G.B.V., Khansyu, Okhalkanda | 3000 (2X1500) |
Group-B
| Sl.No. | District | Name of School | Proposed Capacity (In LPD) |
| 1 | Champawat | K.G.B.V., Tanakpur | 1000 |
| 2 | Almora | K.G.B.V., Chagethi, Dhouladevi | 2000 |
| K.G.B.V., Jaiti, Lamgada | 2000 | ||
| Rajeev Gandhi Navodaya Vidyalaya, Chounaliya, Bhikiyasen | 4000 (2X2000) | ||
| 3 | Tehri | Girls Hostel, Aampata, Narendranagar | 2300 (1X2000) (1X300) |
| Girls Hostel, Routu Ki Veli, Jonpur | 2300 (1X2000) (1X300) | ||
| Girls Hostel, Koshal, Tholdhar | 2300 (1X2000) (1X300) | ||
| Girls Hostel, Akhodi, Bhilangana | 2300 (1X2000) (1X300) | ||
| Girls Hostel, Sujadgaon, Pratapnagar | 2300 (1X2000) (1X300) |
Group-C
| Sl.No. | District | Name of School | Proposed Capacity (In LPD) |
| 1 | Chamoli | K.G.B.V. | 2000 |
| 2 | Pithoragarh | K.G.B.V. Dasaithal | 2000 |
| Rajeev Gandhi Navodaya Vidyalaya, Gangolihat | 2000 | ||
| 3 | Uttarkashi | - | - |
Group-D
| Sl.No. | District | Name of School | Proposed Capacity (In LPD) |
| 1 | Bageshwar | - | - |
| 2 | Pauri | K.G.B.V. | 6000 (2X3000) |
| 3 | Rudraprayag | - | - |
Solar Cooking Systems
1- Dish Type Solar Cooker The main objective of the programme is to provide nutritious food to users and to aware the future generation about the Renewable Energy Systems. The scheme is centrally sponsored. MNRE is providing 60% subsidy in Uttarakhand. The installation of Dish Type Solar Cookers in the Govt. Primary Schools for cooking of "Mid-day Meal" is being done by UREDA from past years.
UREDA had installed/distributed around 6419 Solar Cooker up to the year 2015-16 under Mid-day Meal programme in Govt. schools and to various individual users.
Detail of Subsidy of Dish Type Solar Cooker
| Sl. No. | Type of Cooker | Cost of Cooker (In Rs.) | Central Subsidy 60% | State Subsidy 25% | Beneficiary Share (In Rs.) |
| 1 | Dish Type Solar Cooker | 6]573-00 | 3]944-00 | 1]643-00 | 986-00 |
District wise installed no. of Dish Solar Cooker under Mid day Meal & Market Mode programme up to 2015-16
| Sl. No. | District | Total |
| 1 | Dehradun | 435 |
| 2 | Haridwar | 176 |
| 3 | Tehri | 442 |
| 4 | Uttarkashi | 404 |
| 5 | Pauri | 761 |
| 6 | Rudrapryag | 517 |
| 7 | Champawat | 321 |
| 8 | Almora | 1147 |
| 9 | Bageshwar | 221 |
| 10 | U.S. Nagar | 115 |
| 11 | Pithuragarh | 386 |
| 12 | Nanital | 750 |
| 13 | Chamoli | 744 |
| Grand Total | 6419 | |
2- Box Type Solar Cooker
It is well known fact that a black coloured surface absorbs more heat than a white surface. So, the inner walls and bottom of metallic box to be used for making solar cooker are painted black to increase absorption of heat. This box is covered by a thick transparent sheet of glass. When the box with glass cover is placed in the sunlight, the glass cover allows the infra red rays present in sunlight to pass into the box. Most of these infra red rays are then absorbed by black surface of the box and the box becomes hot. But, after sometime when the black surface becomes hot it starts radiating out heat in the form of infra red rays. But, the glass sheet cover placed over the box does not allow the heat radiated by the black surface to go out from the box. In this way, the glass cover enables the cooker to entrap the heat inside it. Usually, a plane mirror reflector is also attached on the top of the box. The plane mirror reflector increases the efficiency of solar cooker by reflecting more and more sunlight inside the box.
It should be noted that the temperature inside box type solar cooker can go from 1000C to 1400C within 2 to 3 hours when placed in sunlight. So, this type of solar cooker is used to cook only those food materials which require gentle heating.
Detail of Subsidy of Box Type Solar Cooker
| Sl. No. | Type of Cooker | Cost of Cooker (In Rs.) | Central Subsidy 60% | State Subsidy 25% | Beneficiary Share (In Rs.) |
| 1 | Box Type Solar Cooker | 3240-00 | 1800-00 | 810-00 | 630-00 |
Solar Steam Cooking System
Concentrating Solar Technologies for Process heat, Community cooking & Cooling Applications Introduction: Ministry of New and Renewable Energy (MNRE), Govt. of India is promoting Concentrating Solar Technology based systems for process heat, community cooking and space cooling applications in various sectors. For cooking of food in Hotels, Ashrams, Educational Institutions and steam generation for laundry application, space cooling, foods processing in industries, Concentrating Solar Technologies are in implementation for last many years. Few other technologies e.g. dual axis tracked paraboloid dishes, linear Fresnel reflectors, Non-imaging concentrators have also been developed recently and are in demonstration stage. For promotion of Concentrating solar systems, 30% Central financial support for commercial organizations is available under off-grid scheme of JNSSM. Higher support of 60% is available in special category states for non commercial organizations. The systems are being installed through State Nodal Agencies /accredited private channel partners as per technical specifications laid down by MNRE. 15% support under UNDP programme is also admissible.