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An ETC (Evacuated Tube Collector) solar water heater is a specific type of solar thermal technology designed to efficiently harness solar energy for water heating purposes. It consists of a series of glass tubes, each containing an absorber tube and a heat pipe, which work together to capture and transfer solar heat to a fluid, typically water or a heat transfer fluid.
Here's how an ETC solar water heater generally operates:
Evacuated Tubes: The system comprises multiple parallel rows of evacuated tubes. Evacuated tubes are essentially glass tubes with a vacuum between the inner and outer layers. This vacuum acts as an excellent insulator, minimizing heat loss to the surroundings.
Absorber Tube: Inside each evacuated tube, there is an absorber tube that is usually coated with a selective absorbing material. This coating enhances the tube's ability to absorb sunlight efficiently. The absorber tube heats up when exposed to sunlight.
Heat Pipe: The absorber tube is connected to a heat pipe, which is a sealed copper tube containing a small amount of working fluid or refrigerant. As the absorber tube heats up, the working fluid inside the heat pipe vaporizes and rises to the condenser section.
Condenser: At the top of the heat pipe, the vaporized working fluid releases its heat to the water or heat transfer fluid circulating through the condenser. This heat transfer causes the vapor to condense back into a liquid.
Circulation of Fluid: The heated water or heat transfer fluid then flows to a storage tank, where it can be used for domestic or industrial purposes. The storage tank is often well-insulated to minimize heat loss.
Minimum Order Quantity: 1 Piece
Product Brochure
| Capacity | 200 LPD |
| Brand | Sunjivan Solar |
| Total Space Required For Installation | 30 Sq. ft |
| Model | Etc Type Solar System |
| Number of Tubes | 20 Nos |
| System Height From Roof | 4.5 Ft |
| Warranty | 5 Years |
| Electric heater backup (optional) | Available |
| Evacuated Tube Size | 58x1800 |
| Country of Origin | Made in India |
Features & Benefits:
Working Principle (Plug into The Sun...)
Non- Pressurized evacuated tube solar water heater works on the natural circulation of water between solar collector tubes & water tank as thermosyphon system. As water in the vacuum tube is heated, it rise naturally in to the storage tank, at the same time cold water in tank flow down to the vacuum tube, causing circulation throughout the thermosyphon system.
Special quality 3T standard solar tube of solar water heater gives better performance in cloudy and winter days. Water heating is faster due to efficient 3T technology of tubes.
Technical Specification
| S. No | Description | Specifications |
| 1 | Evacuated Tube Length | 58x1800mm & 58x2100mm |
| 2 | Evacuated Tube Diameter | 58mm |
| 3 | Storage Tank Diameter | 480mm, 460mm & 580mm |
| 4 | Storage Tank Volume | 150 Lpd, 200 Lpd, 250 Lpd, 300 Lpd, 500Lpd |
| 5 | Inner Tank Material | 120 GSM Galvanize Zero Spangle |
| 6 | Inner Tank Thickness | 1.6 mm / 2 mm |
| 7 | Outer Tank Material | Powder Coated or Stainless Steel |
| 8 | Tank Insulation | High Density Puf (50mm) |
| 9 | Method Of Bonding | Co2 Welding. |
| 10 | Stand | Special Profile Rolled Section Stand |
| 11 | Grommets | Silicon Washers |
| 12 | Circulation | Thermosymphon |
Additional Information:
View Complete details
Minimum Order Quantity: 1 Set
Product Brochure
| Capacity | 100 LPD |
| Total Space Required For Installation | 25 Sq Ft |
| Brand | Sunjivan Solar |
| Model | ETC Type Solar Water Heater |
| System Height From Roof | 4.5 Feet |
| Number of Tubes | 10 |
| Warranty | 5 Years |
| Electric heater backup (optional) | Yes Available |
| Evacuated Tube Size | 58x1800 |
| Electric Back Up Coupling | Yes |
| Country of Origin | Made in India |
Features & Benefits:
Working Principle (Plug into The Sun...)
Non- Pressurized evacuated tube solar water heater works on the natural circulation of water between solar collector tubes & water tank as thermosyphon system. As water in the vacuum tube is heated, it rise naturally in to the storage tank, at the same time cold water in tank flow down to the vacuum tube, causing circulation throughout the thermosyphon system.
Special quality 3T standard solar tube of solar water heater gives better performance in cloudy and winter days. Water heating is faster due to efficient 3T technology of tubes.
Technical Specification
| S. No | Description | Specifications |
| 1 | Evacuated Tube Length | 58x1800mm & 58x2100mm |
| 2 | Evacuated Tube Diameter | 58mm |
| 3 | Storage Tank Diameter | 480mm, 460mm & 580mm |
| 4 | Storage Tank Volume | 150 Lpd, 200 Lpd, 250 Lpd, 300 Lpd, 500Lpd |
| 5 | Inner Tank Material | 120 GSM Galvanize Zero Spangle |
| 6 | Inner Tank Thickness | 1.6 mm / 2 mm |
| 7 | Outer Tank Material | Powder Coated or Stainless Steel |
| 8 | Tank Insulation | High Density Puf (50mm) |
| 9 | Method Of Bonding | Co2 Welding. |
| 10 | Stand | Special Profile Rolled Section Stand |
| 11 | Grommets | Silicon Washers |
| 12 | Circulation | Thermosymphon |
Additional Information:
View Complete details
Minimum Order Quantity: 1 Piece
Product Brochure
| Capacity | 250 LPD |
| Brand | Sunjivan Solar |
| Total Space Required For Installation | 50 Sq. Ft. |
| Model | ETC Type Solar Water Heater |
| Number of Tubes | 25 Nos |
| System Height From Roof | 4.5 Ft |
| Warranty | 5 Years |
| Electric heater backup (optional) | Available |
| Evacuated Tube Size | 58x1800 |
| Country of Origin | Made in India |
Features & Benefits:
Working Principle (Plug into The Sun...)
Non- Pressurized evacuated tube solar water heater works on the natural circulation of water between solar collector tubes & water tank as thermosyphon system. As water in the vacuum tube is heated, it rise naturally in to the storage tank, at the same time cold water in tank flow down to the vacuum tube, causing circulation throughout the thermosyphon system.
Special quality 3T standard solar tube of solar water heater gives better performance in cloudy and winter days. Water heating is faster due to efficient 3T technology of tubes.
Technical Specification
| S. No | Description | Specifications |
| 1 | Evacuated Tube Length | 58x1800mm & 58x2100mm |
| 2 | Evacuated Tube Diameter | 58mm |
| 3 | Storage Tank Diameter | 480mm, 460mm & 580mm |
| 4 | Storage Tank Volume | 150 Lpd, 200 Lpd, 250 Lpd, 300 Lpd, 500Lpd |
| 5 | Inner Tank Material | 120 GSM Galvanize Zero Spangle |
| 6 | Inner Tank Thickness | 1.6 mm / 2 mm |
| 7 | Outer Tank Material | Powder Coated or Stainless Steel |
| 8 | Tank Insulation | High Density Puf (50mm) |
| 9 | Method Of Bonding | Co2 Welding. |
| 10 | Stand | Special Profile Rolled Section Stand |
| 11 | Grommets | Silicon Washers |
| 12 | Circulation | Thermosymphon |
Additional Information:
View Complete details
Minimum Order Quantity: 1 Piece
Product Brochure
| Capacity | 300 LPD |
| Total Space Required For Installation | 60 Sq. Ft. |
| Brand | Sunjivan Solar |
| Model | ETC Type Solar Systems |
| System Height From Roof | 4.5 Ft |
| Number of Tubes | 30 |
| Electric heater backup (optional) | Available |
| Warranty | 5 Years |
| Evacuated Tube Size | 58x1800 |
| Country of Origin | Made in India |
Features & Benefits:
Working Principle (Plug into The Sun...)
Non- Pressurized evacuated tube solar water heater works on the natural circulation of water between solar collector tubes & water tank as thermosyphon system. As water in the vacuum tube is heated, it rise naturally in to the storage tank, at the same time cold water in tank flow down to the vacuum tube, causing circulation throughout the thermosyphon system.
Special quality 3T standard solar tube of solar water heater gives better performance in cloudy and winter days. Water heating is faster due to efficient 3T technology of tubes.
Technical Specification
| S. No | Description | Specifications |
| 1 | Evacuated Tube Length | 58x1800mm & 58x2100mm |
| 2 | Evacuated Tube Diameter | 58mm |
| 3 | Storage Tank Diameter | 480mm, 460mm & 580mm |
| 4 | Storage Tank Volume | 150 Lpd, 200 Lpd, 250 Lpd, 300 Lpd, 500Lpd |
| 5 | Inner Tank Material | 120 GSM Galvanize Zero Spangle |
| 6 | Inner Tank Thickness | 1.6 mm / 2 mm |
| 7 | Outer Tank Material | Powder Coated or Stainless Steel |
| 8 | Tank Insulation | High Density Puf (50mm) |
| 9 | Method Of Bonding | Co2 Welding. |
| 10 | Stand | Special Profile Rolled Section Stand |
| 11 | Grommets | Silicon Washers |
| 12 | Circulation | Thermosymphon |
Additional Information:
View Complete details
Minimum Order Quantity: 1 Piece
Product Brochure
| Total Space Required For Installation | 25 Sq. Ft. |
| Brand | Sujivan Solar |
| Model | ETC Type Solar System |
| System Height From Roof | 4.5 Ft |
| Number of Tubes | 15 Nos |
| Electric heater backup (optional) | Available |
| Warranty | 5 Years |
| Evacuated Tube Size | 58x1800 |
| Country of Origin | Made in India |
Features & Benefits:
Working Principle (Plug into The Sun...)
Non- Pressurized evacuated tube solar water heater works on the natural circulation of water between solar collector tubes & water tank as thermosyphon system. As water in the vacuum tube is heated, it rise naturally in to the storage tank, at the same time cold water in tank flow down to the vacuum tube, causing circulation throughout the thermosyphon system.
Special quality 3T standard solar tube of solar water heater gives better performance in cloudy and winter days. Water heating is faster due to efficient 3T technology of tubes.
Technical Specification
| S. No | Description | Specifications |
| 1 | Evacuated Tube Length | 58x1800mm & 58x2100mm |
| 2 | Evacuated Tube Diameter | 58mm |
| 3 | Storage Tank Diameter | 480mm, 460mm & 580mm |
| 4 | Storage Tank Volume | 150 Lpd, 200 Lpd, 250 Lpd, 300 Lpd, 500Lpd |
| 5 | Inner Tank Material | 120 GSM Galvanize Zero Spangle |
| 6 | Inner Tank Thickness | 1.6 mm / 2 mm |
| 7 | Outer Tank Material | Powder Coated or Stainless Steel |
| 8 | Tank Insulation | High Density Puf (50mm) |
| 9 | Method Of Bonding | Co2 Welding. |
| 10 | Stand | Special Profile Rolled Section Stand |
| 11 | Grommets | Silicon Washers |
| 12 | Circulation | Thermosymphon |
Additional Information:
View Complete details