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Solar Thermal applications

Solar Thermal systems have the flexibility of being used for off-grid applications too. Industrial process heat (IPH) applications below 250°C, for example, contribute to about 15 to 20% of India’s total oil consumption (almost 80%-90% of which is imported). 

SECI envisages tremendous potential in the field of off-grid solar thermal application and is in the process of drawing specific plans for implementation and facilitation of projects throughout the country. Such decentralized systems not only empower the customers by granting energy-independence but also have immense potential of scalability. Commissioning of Decentralized Solar Thermal applications is, therefore, going to be a prominent strategy towards achievement of these targets.

Other significant off-grid applications include solar water heaters (using both Flat Plate Collectors and Evacuation Tube Collectors), solar mass cooking and comfort cooling applications 

Installation of Solar Water heating systems:

A solar water heater consists of a collector to trap the heat energy of sun rays by use of selective coating. The heat is transferred to riser pipes or tubes so that water through the tubes gets heated and is delivered to storage tank. The total system with solar collector, storage tank and pipelines is called Solar Water Heating System. The hot water temperature can be raised up to 800 C by re-circulation of same water through collector. 

The mission is setting an ambitious target for encouraging solar thermal applications in domestic and industrial segment. The key strategy is 

  • to make solar heaters mandatory, through building bye-laws and incorporation in the National Building Codes 
  • to ensure effective mechanism for certification/rating of manufacturers
  • To promote such thermal applications through local agencies/power utilities, and 
  • To support the upgrading of technologies and manufacturing capacities through concessional funding. 

SECI would be supporting the above mission objectives and is planning to implement the installationof Solar Water Heating Systems for schools, colleges, industries etc. through empanelled agencies.

Title: 50,000 LPD systems in Gurgaon

Courtesy: MNRE

Installation of Solar Air Heating Systems:

Solar Air Heating Systems consist of collectors which have an airtight and insulated metal frame and a high transmittance solar glazing for absorbing sunrays and heat the air in the collector.  An electrically powered fan moves air through the collectors and then blows back to the building using conventional, HVAC ducting and air handling equipment.