350L Stainless Steel Tank Non-pressurized solar Water Heater

A 350L Stainless Steel Non-Pressurized Solar Water Heater is a high-capacity, durable, and energy-efficient system that provides hot water using solar energy. It is ideal for large households (8-10 people), hotels, hostels, or businesses looking for a cost-effective and eco-friendly water heating solution.

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Key Features:

1. Tank Specifications:

• Capacity: 350 liters (suitable for 8-10 people).
• Inner Tank Material: Food-grade stainless steel (SUS304 or SUS316) for hygiene and corrosion resistance.
• Outer Tank Material: Stainless steel for extra durability and weather protection.
• Insulation: 50-60mm thick polyurethane foam (PUF) for long heat retention (keeps water hot for 24+ hours).

2. Solar Collector System:

• Vacuum Tubes: High-efficiency borosilicate glass tubes for maximum solar heat absorption.
• Tube Count: Typically 35-40 tubes (varies by model and tube size).
• Tube Diameter: 58mm for optimal heat absorption and efficiency.
• Operation: Natural thermosiphon circulation (hot water rises, cold water sinks).

3. Frame and Structure:

• Frame Material: Stainless steel or galvanized aluminum for stability and longevity.
• Installation Type: Designed for rooftop or elevated installation to maximize sunlight exposure.

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How It Works:

1. Water Supply: Cold water enters the system from an overhead storage tank.
2. Solar Absorption: The vacuum tubes absorb sunlight and transfer heat to the water inside.
3. Natural Circulation: Heated water rises into the insulated storage tank, while cooler water moves down for heating.
4. Hot Water Availability: The insulated tank keeps water hot for extended periods.

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Advantages:

✅ Large Capacity – Provides enough hot water for 8-10 people.
✅ Energy Efficient – Uses solar energy, significantly reducing electricity or gas bills.
✅ Rust & Corrosion Resistant – 100% stainless steel construction for a long lifespan.
✅ Eco-Friendly – Zero carbon emissions, making it an environmentally friendly choice.
✅ Low Maintenance – No pumps, moving parts, or electrical components required.
✅ Excellent Heat Retention – Thick PUF insulation keeps water hot for up to 24+ hours.
✅ Simple Installation – Can be mounted on rooftops or elevated stands.

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Disadvantages:

❌ Gravity-Dependent – Works best when installed at an elevated position for proper water flow.
❌ Weather Dependent – Less effective on cloudy or rainy days (may need backup heating).
❌ Requires Adequate Roof Space – Due to its large size, installation requires sufficient space and structural support.
❌ Higher Initial Cost – Upfront investment is higher compared to traditional water heaters.

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Who Should Buy This?

• Large families (8-10 people) needing a reliable hot water supply.
• Hotels, lodges, hostels, or small businesses looking for a cost-effective and sustainable water heating solution.
• Eco-conscious homeowners aiming to reduce energy bills and carbon footprint.
• Areas with strong sunlight exposure for maximum efficiency.