200L Stainless steel Non-pressurized solar Water Heater

A 200L Stainless Steel Non-Pressurized Solar Water Heater is a durable, efficient, and eco-friendly solution for heating water using solar energy. It operates using natural thermosiphon circulation, making it ideal for households and small businesses.

Key Features:

• Capacity: 200 liters (suitable for 3-5 people).
• Tank Material:
  • Inner Tank: Food-grade stainless steel (SUS304 or SUS316) for corrosion resistance and hygiene.
  • Outer Tank: Stainless steel or coated steel for durability and weather resistance.
• Non-Pressurized System: Uses gravity for water flow, requiring an elevated installation.
• Solar Collector:
  • Vacuum Tubes: High-efficiency borosilicate glass tubes absorb sunlight to heat the water.
  • Tube Count: Typically 20-24 tubes (depending on tube size and efficiency).
• Insulation: Thick polyurethane foam (PUF) to retain heat for extended periods (up to 24 hours).
• Frame: Stainless steel or galvanized aluminum for stability and longevity.

How It Works:

1. Water Fills the System – Cold water enters from a supply tank.
2. Solar Absorption – The vacuum tubes capture sunlight and transfer heat to the water.
3. Natural Circulation – Heated water rises into the storage tank, while cooler water moves down to be heated.
4. Hot Water Availability – The insulated tank keeps water hot for use throughout the day and night.

Advantages:

✅ Rust & Corrosion Resistant – Stainless steel construction ensures durability.
✅ Energy-Saving & Eco-Friendly – Uses solar power, reducing electricity and gas bills.
✅ Low Maintenance – No pumps or complex electrical components.
✅ Long Heat Retention – High-density insulation maintains water temperature.
✅ Simple Installation – Can be mounted on rooftops or elevated stands.

Disadvantages:

❌ Gravity-Dependent – Requires an elevated position for effective water flow.
❌ Weather Dependent – Less efficient on cloudy or rainy days (may need backup heating).
❌ Initial Cost – Higher upfront investment compared to conventional water heaters.