We all know that Energy is the prime mover of Development and to make it available at affordable prices for the common man is a big challenge before us. With the increase of population and industrialization the energy demand is growing day by day and we have to explore possibilities to keep the pace with the growing demand. The conventional sources have their limitations and they alone cannot meet the increasing demand for longer periods, therefore our responsibility to develop Renewable Energy increases manifold. It is surprising to know that sun power received by earth in a single day is equivalent to the total energy demand of the world for hundred years. Therefore the need of the hour is to tap and use this energy efficiently. In one way sun power can be used for generation of electric power through solar photovoltaic technology which can be further used to meet all energy requirements and on the other hand it can be used for generation of thermal power through solar thermal technology for heating, drying, cooking and steam generation purposes. The major application of Solar Thermal Technology is Solar Water Heating Systems, which can be used in all sectors like domestic, Institutional, commercial and industrial sectors for Bathing, washing steam cooking and processing of industrial products.

SOLAR WATER HEATING SYSTEMS:

The solar radiation incident on the surface of the earth can be conveniently utilized for the benefit of human society. One of the popular devices that harness the solar energy is solar water heating system (SWHS).

A solar water heating system consists of a collector to collect solar energy and an insulated storage tank to store hot 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 gets heated up and is delivered into the storage tank. The re-circulation of the same water through absorber panel in the collector raises the temperature to 80 C (Maximum) in a good sunny day. The total system with solar collector, storage tank and pipelines is called solar water heating system.

Broadly, the solar water heating systems are of two categories. They are: closed loop system and open loop system. In the first one, heat exchangers are installed to protect the system from hard water obtained from borewells or from freezing temperatures in the cold regions. In the other type, either thermosyphon or forced circulation system, the water in the system is open to the atmosphere at one point or other. The thermosyphon systems are simple and relatively inexpensive. They are suitable for domestic and small institutional systems, provided the water is treated and potable in quality. The forced circulation systems employ electrical pumps to circulate the water through collectors and storage tanks.

The SWH systems are economical, pollution free and easy for operation in warm countries like ours. Based on the collector system, solar water heating systems are of three types.

• Flat Plate Collector (FPC) system.
• Evacuated Tube Collector (ETC) system.
• Parabolic Concentrated (Dish Type) system.

• Flat Plate Collector (FPC) system.

  The solar radiation is absorbed by Flat Plate Collectors which consist of an insulated outer metallic box covered on the top with glass sheet. Inside there are blackened metallic absorber (selectively coated) sheets with built in channels or riser tubes to carry water. The absorber absorbs the solar radiation and transfers the heat to the flowing water.

  

• Evacuated Tube Collector (ETC) system.

  Evacuated Tube Collector 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 heat to the water which flows through the inner tube.

  
  ETC Type System

  

• Parabolic Concentrated (Dish Type) system.

  Parabolic Concentrated type system consist of a frame fitted with reflecting mirrors, rotating support, stand and a receiver. Concentrators are installed in such a way that they focus the sun radiations on to the receivers while in operation which will be attached to a steam header / hot water tank. The concentrators are tracked automatically with the help of suitable tracking arrangement. Parabolic systems can heat water at higher temperatures and these are mainly used for production of steam for processing of industrial products in industries and cooking of food in domestic and institutional sectors.

  

Salient Features of Solar Water Heating System

Solar Water heating systems turns cold water into hot water with the help of sun rays.

• Around 60 deg. – 80 deg. C temperature can be attained by using FPC and ETC based systems depending on solar radiation, weather conditions and solar collector system efficiency.
• For attaining higher temperatures and production of steam Parabolic concentrated type systems are used.
• Hot water for homes, hostels, hotels, hospitals, restaurants, dairies, industries etc.
• Can be installed on roof-tops, building terrace and open ground where there is no shading, south orientation of collectors and over-head tank above SWH system
• Only soft and potable water can be used
• Stainless Steel is used for small tanks whereas Mild Steel tanks with anticorrosion coating inside are used for large tanks
• Solar water heaters (SWHs) of 100-300 litres capacity are suited for domestic application.
• Larger systems can be used in restaurants, guest houses, hotels, hospitals, industries etc.

Fuel Savings:Solar water heating systems reduce the use of fuels such as oil, electricity and coal. A Solar water heating system of capacity 100 litre can replace an electric geyser for residential use and saves 1500 units of electricity, 180 litres of furnace oil annually. At today's price itself this amount of energy is around Rs. 7500 in case of electricity, or Rs.6500 in case of oil.

Avoided utility cost on generation: The use of 1000 SWHs of 100 litres capacity each can contribute to a peak load saving of 1 MW.

Environmental benefits : A SWH of 100 litre capacity can prevent emission of 1.5 tonnes of carbondioxide per year.

Life: 15-20 years

Approximate cost:The cost of 100 LPD FPC type system is approximately Rs.22000-26000 and the cost of ETC type system is around Rs.15000 - 18,000. The cost of Parabolic system depend upon the required temperature of hot water and steam, which is approximately Rs.280-320 per litre.

 Government subsidy:

Ministry of New and Renewable Energy, Govt. of India is providing 30% subsidy on this scheme i.e. Rs. 6600/- on FPC system and Rs.4500/- on ETC system of capacity 100 LPD. The subsidy on Parabolic system is Rs. 5400/- per Sq.m of dish area.

Payback period:
2-3years when electricity is replaced.
3-4 years when furnace oil is replaced.
4-5 years when coal is replaced

Though the initial investment on a solar water heating system is high compared to available conventional alternatives, the return on investment has become increasingly attractive with the increase in prices of conventional energy. The pay back period depends on the site of installation, utilization pattern and fuel replaced.

PUNJAB ENERGY DEVELOPMENT AGENCY is continuously promoting the use of solar water heating systems by issuing advertisements in the leading newspapers, electronic media like television and radio. Camps and exhibitions are organised in schools, Colleges and important festivals of the State. A Solar water heating system has been fitted on the exhibition Van of PEDA to make the people aware of the technology. Keeping in view the broader benefits of the systems, the Government of Punjab has made the use of solar water heating systems mandatory Vide order No. 2/123/05-STE(3)370, dated. 20th January/6th February 2006 and Punjab Government Gazette notification dated 17th March, 2006 in the following type of buildings:-

1. Industries where hot water is required for processing.

2. Hospitals and Nursing homes including Government Hospitals.

3. Hotels, Motels and Banquet halls.

4. Jail Barracks, Canteens.

5. Housing Complexes set up by Group Housing Societies/Punjab Urban Development Authority.

6. All residential buildings built on a plot of size 500 square yards and above falling within the limits of municipal committees/corporations and Punjab Urban Development Authority sectors.

7. All Government buildings, Residential Schools, Educational Colleges, Hostels, Technical / Vocational Education Institutes, District Institutes of Education and Training, Tourism Complexes and Universities etc.

Since inspection 16 Lac litres capacity solar water heating systems have been installed in the state. During the current year 3 Lac litres capacity systems have been set up in the state by PEDA. Major installations are:-

1. 9500 LPD system installed at Guru Nanak Dev University, Amritsar.

2. 10000 LPD system installed at Army Institute of Law S.A.S Nagar, Mohali.

3. 5000 LPD system installed at Chitkara Institute, Patiala.

4. 3500 LPD system installed at Motel Nagpur, Ludhiana.

5. 5000 LPD system installed at Hotel Maya, Jalandhar.

6. 6400 LPD system installed at Indo Global College of Education, vill- Abhipur, Mohali.

7. 4000 LPD system installed at Silky Resort Pvt. Ltd., Zirakpur.

8. 7500 LPD system installed at North India Hotel & Industries, Jalandhar.

9. 4000 LPD system installed at Baba Farid Yidayak Society, Bathinda.

10. 4000 LPD system installed at Nest Hotels & Motels, Jalandhar.

11. 35000 LPD system installed at M/s Kanin India, Focal Point Ludhiana.

12. 7000 LPD system installed at Hotel City Heart, Ludhiana.

13. 30000 LPD system installed at DSM Anti-Infectives India Ltd. Toansa , Nawanshahar.

14. 5000 LPD system installed at Golden Temple Amritsar.

15. 6000 LPD system installed at Surya Educational Institute, Rajpura,

16. 3000 LPD system installed at Hotel Maryland, Zirakpur, Distt. Mohali.

17. 7500 LPD system installed at Shiwalik Public School, Mohali.

18. 4100 LPD system installed at Kang’s Nirwana Resorts, Jaijon Doaba, Distt. Hoshiarpur.

19. 5000 LPD system installed at Golden Temple Amritsar.

20. 13500 LPD system installed at Ranbaxi Industries Ltd., Ropar.

21. 4500 LPD system installed at Baba Farid College, Faridkot.

22. 12500 LPD system installed atPunjab Bhawan, New Delhi.

23. 13000 LPD system installed at Dashmesh Academy, Anandpur Sahib.

24. 5000 LPD system installed at Eagle Hotel, Rajpura, Distt Patiala.

25. 6000 LPD system installed at Surya World Educational research institute, Vill Bapror, Rajpura, Distt. Patiala.

26. 8000 LPD Parabilic concentrated type system installed in B.S. Paper Mill, Tajpur, Ludhiana.

27. 6000 LPD system installed at Guru Angad Dev Veterinary and Animal Science University Ludhiana.

28. 5500 LPD system installed at City Beautiful Hotel & Resorts in Zirakpur, Distt. Mohali.

29. 1 Lac LPD system installed at Kangaroo Industries, Ludhiana.

Application for reimbursement of capital subsidy on installation of

Solar Water Heating Systems

To be submitted to Punjab Energy Development Agency, Plot no-1-2, Sec-33-D Chandigarh




1.	Name of applicant /Institutions / organization / commercial establishment with complete postal address, telephone, fax number and E-mail address etc.
2.	Details of Registration (Registration No if registered)
3.	Place of installation of the system.
4.	Type of system installed (FPC/ETC) Capacity of System (LPD) Circulation:- Natural / Forced	:- :- :-
5.	No. of collectors No. of Tubes in the system in case of ETC systems Size of Tubes (Diameter x Length) Area of collectors (Photograph to be enclosed)	:- Nos. :- Nos. :- ……..mm x ………mm :- Sq.m
6.	Date of commissioning of the system.
7.	i) Name and address of BIS/ MNRE approved manufacturer. ii) Name and address of supplier	:- :-
8.	Present utility of hot water.
9.	Expected amount of fuel saving per year.
10.	Total cost of the system.
11.	Amount of the capital subsidy sought from MNES (Rs. 3300/- per sq. m. of collector area = 6600 / LPD for FPC & 3000/- sq. m. for ETC system = 4500 / 100 LPD)
12.	Certified that we have not availed any soft loan under MNRE interest subsidy scheme from any of the banks/ Fls and will also not be availing that in future for the above system. We have also not availed any capital subsidy on this system from MNRE till date.







Date………….. Signature with name and Seal of Head of beneficiary organization

Certificate of Manufacturer/ Supplier:

Certified that the information given in the application form is correct to the best of my knowledge.

 

Signature and seal of Signature and seal of

Manufacturer/ Supplier PEDA Officer

The interested individuals/ Parties/ Institutions can apply in the Application form for installation and release of subsidy on Solar Water Heating Systems and submit the same with our District Managers posted in the office of Additional Deputy Commissioner Development in each district of the state. For more information please contact the solar thermal division of PEDA at the following address.