300L White Tank Non-pressurized solar Water Heater

A 300L White Tank Non-Pressurized Solar Water Heater is a high-capacity, energy-efficient water heating system that utilizes solar energy. It is ideal for large households (6-8 people), small businesses, or institutions needing a cost-effective and eco-friendly hot water 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/SUS316) for corrosion resistance and hygiene.
• Outer Tank Material: White-coated steel or stainless steel for weather resistance.
• Insulation: 50-60mm thick polyurethane foam (PUF) for heat retention (hot water stays warm for up to 24+ hours).

2. Solar Collector System:

• Vacuum Tubes: High-efficiency borosilicate glass tubes for optimal solar heat absorption.
• Tube Count: Typically 30-36 tubes (depending on model and tube size).
• Tube Diameter: 58mm for better solar energy absorption.
• Working Principle: Natural thermosiphon circulation (hot water rises, cold water sinks).

3. Frame and Structure:

• Frame Material: Galvanized steel or aluminum for durability and stability.
• 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 heat 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: Stored water remains hot for use, even after sunset.

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Advantages:

✅ Large Capacity – Suitable for larger families (6-8 people) or small businesses.
✅ Energy Efficient – Uses solar energy, reducing electricity or gas costs.
✅ Eco-Friendly – No carbon emissions, making it a green alternative.
✅ Low Maintenance – No moving parts, pumps, or electrical components.
✅ Long Heat Retention – High-density insulation keeps water hot for 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 require a backup heating source).
❌ Space Requirement – Needs adequate rooftop space for installation.
❌ Initial Cost – Higher upfront investment compared to traditional water heaters.

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Who Should Buy This?

• Large families (6-8 people) needing a consistent hot water supply.
• Hotels, lodges, hostels, or businesses looking for cost-effective water heating.
• Eco-conscious homeowners aiming to reduce energy bills.
• Regions with ample sunlight where solar energy can be maximized.