Solar water heaters (SWHs) are the simplest application of solar thermal technology using free energy from the sun to provide hot water for any applications ranging from domestic to industrial. Solar water heating systems mainly include water storage tanks, piping systems, and solar collectors. They are a mature technology, pollution-free, cost-effective, and result in significant savings on electricity bills.
Solar water heater of Solar water heaters (SWHs) of 100-500 liters per day (LPD) capacity are suited for domestic use. Larger systems can be used in dharamshalas (guest houses), restaurants, canteens, hotels, hospitals, etc.
Standards – Solar Water Heaters
- IS 16543 (2016) – All glass-evacuated solar collector tubes.
- IS 16544 (2016) – All glass evacuated tubes solar water heating system.
- IS 16368 (2015) – Test procedure for thermosyphon-type domestic solar hot water heating systems.
- IS 16542 (2016) – Direct insertion type storage water tank for all glass evacuated tubes solar collector.
- IS 12933: Part 1 (2003) Solar flat plate collector – Specification: Part 1 requirements (Second Revision).
- IS 12933: Part 2 (2003) Solar flat plate collector – Specification: Part 2 components (Second Revision).
[Download from the BIS portal after registering: https://www.services.bis.gov.in/php/BIS_2.0/]
BIS List of Approved Solar Water Heater Manufacturers
The latest list of BIS-approved SWH manufacturers as per IS 12933 (Part 1): 2003 and IS 16544: 2016 can be downloaded from: https://www.manakonline.in/MANAK/ApplicationLicenceRelatedrpt