Suryottam(A Brand of Electraa Solar Energy Systems Private Limited)

• Technology: Evacuated Tube Collector (ETC) system for efficient solar heating
• Circulation: Thermosyphon system (natural circulation, no pump required)
• Vacuum Tubes: Approximately 20 evacuated tubes (58 mm × 1800 mm typical size)
• Inner Tank: Galvanized Iron (GI) or Stainless Steel, with anti-corrosion coating

• Capacity: 10 litres per day – suitable only for very limited use (e.g. hand washing or 1–2 mugs of hot water)
• System Type: Thermosyphon (natural circulation)
• Collector Type: Miniature ETC (Evacuated Tube Collector) system
• Tube Setup: Likely 1–2 vacuum tubes (58 mm × 1800 mm), which is highly inefficient for small volumes

Feature,

• Capacity: 300 Litres Per Day (LPD) – suitable for 5 to 6 people
• System Type: Thermosyphon (natural circulation, no pump required)
•  Technology: Evacuated Tube Collector (ETC) – high efficiency heat retention
•  Inner Tank Material: Stainless Steel (SS-304 grade) – corrosion-resistant

• Inner Tank: GI with coating → durable and corrosion-resistant
• Outer Tank/Body: Powder-coated Galvanized Iron (GI)  weatherproof finish
• Insulation: 50 mm high-density Polyurethane Foam (PUF) – retains heat for 24–48 hours
• Water Output Temperature: Up to ~65–80 °C in good sunlight conditions

• Capacity: 200 Litres Per Day — suitable for 4 to 5 users
• Circulation: Thermosyphon system (natural circulation, no pump required) — typical for models in this capacity Vacuum Tubes:  20 evacuated tubes (58 mm × ~1800 mm size)

• Capacity: 500 Litres Per Day  ideal for 15 to 16 users 
• Technology: Evacuated Tube Collector ETC system — efficient solar water heating
• Number of Tubes: 38 vacuum tubes 58 mm diameter  2100 mm length
• Tube Coating: Triple-layer coating Infrared Reflection, Absorptance, Anti-Reflection for enhanced performance

• Water Output Temperature: ~65°C to 80°C under clear sunlight
• Roof Space Requirements: Collector footprint roughly 7–8 ft × 6–7 ft, depending on tube layout 
• Installation: Roof-mounted galvanized steel frame, rated for wind and rain loads, gravity-feed (non-pressurized) setup
• Warranty: Approx. 1 year standard (some listings), though industry peers often offer 5+ years warranty on tank performance 

Feature,

• Collector Type: Evacuated Tube Collector (ETC), horizontal orientation; includes 10 tubes (58 mm diameter, copper riser/header assembly) covering 
• Tube Specs: 58 mm × ~1800 mm evacuated glass tubes, copper absorber, high-selective multi-layer coating 
• Inner Tank Material: Galvenised iron horizontal non‑pressurized design with 1.5 mm thickness