300L Stainless Steel Tank Non-pressurized solar Water Heater

A 300L 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 (6-8 people), small businesses, hotels, or hostels looking for a cost-effective and eco-friendly water heating solution.

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Key Features:

1. Tank Specifications:

• Capacity: 300 liters (suitable for 6-8 people).
• Inner Tank Material: Food-grade stainless steel (SUS304 or SUS316) for corrosion resistance and hygiene.
• Outer Tank Material: Stainless steel for extra durability and weather resistance.
• Insulation: 50-60mm thick polyurethane foam (PUF) for long heat retention (hot water stays warm for 24+ hours).

2. Solar Collector System:

• Vacuum Tubes: High-efficiency borosilicate glass tubes for maximum solar heat absorption.
• Tube Count: Typically 30-36 tubes (varies by model and tube size).
• Tube Diameter: 58mm for improved 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 durability and stability.
• Installation Type: Designed for rooftop or elevated installation to ensure maximum 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: Vacuum tubes absorb sunlight, heating the water inside.
3. Natural Circulation: Heated water rises into the insulated storage tank, while cooler water moves down to be heated.
4. Hot Water Availability: The insulated tank retains heat, keeping water warm for extended use.

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Advantages:

✅ Large Capacity – Provides ample hot water for 6-8 people or businesses.
✅ Energy Efficient – Uses solar energy, significantly reducing electricity and gas costs.
✅ Corrosion & Rust Resistant – 100% stainless steel construction ensures a long lifespan.
✅ Eco-Friendly – Zero carbon emissions, making it an environmentally friendly choice.
✅ Low Maintenance – No pumps, moving parts, or electrical components to maintain.
✅ Excellent Heat Retention – Thick PUF insulation keeps water hot for 24+ hours.
✅ Simple Installation – Can be mounted on rooftops or elevated stands.

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Disadvantages:

❌ Gravity-Dependent – Requires an elevated installation for efficient water flow.
❌ Weather Dependent – Less efficient on cloudy or rainy days (may need backup heating).
❌ Requires Adequate Roof Space – Due to its larger size, installation requires enough 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 households (6-8 people) needing a reliable hot water supply.
• Hotels, lodges, hostels, or small businesses looking for cost-effective solar water heating.
• Eco-conscious homeowners aiming to reduce energy bills and carbon footprint.
• Locations with good sunlight exposure for optimal performance.