80L‑300L Non‑Pressurized Heat Pipe Pump Vacuum Tube Solar Energy Hot Water Warmer
80L‑300L non‑pressurized heat‑pipe vacuum tube solar water warmer is split‑type active solar hot‑water unit. Heat‑pipe vacuum tube collectors mount on rooftop, non‑pressurized storage tank can be installed indoors or rooftop. Driven by circulation pump and differential‑temperature controller, it realizes forced heat‑exchange circulation. Heat‑pipe phase‑change heat transfer prevents water inside vacuum tubes, effectively anti‑freeze even in cold climate. Suitable for household domestic hot‑water, optional electric auxiliary heating guarantees 24‑hour hot‑water supply for bathing, laundry and kitchen use。
Working Principle
- Heat‑pipe evacuated vacuum tubes absorb solar radiation. Internal working medium vaporizes under sunlight, vapor rises to condenser end and releases heat. Heat transfers to heat‑transfer fluid inside collector manifold. No domestic water flows into vacuum tubes, tube breakage will not cause water leakage。
- Differential‑temperature controller monitors temperature gap between collectors and storage tank. When temperature difference reaches set value, it automatically starts circulation pump to drive heat‑transfer medium circulation. Heat is transferred into non‑pressurized storage tank.
- This is non‑pressurized atmospheric‑pressure tank, hot‑water flows out by gravity water‑head height difference. Auxiliary feed tank with float‑valve is required for automatic water refilling. Direct connection to high‑pressure municipal tap‑water is forbidden.
- Under cloudy, rainy or low‑sunlight conditions, optional built‑in electric heating element activates to compensate heat and maintain stable domestic hot‑water output.
Important note: System needs stable AC power supply for circulation pump and temperature controller. Apply pipeline anti‑freeze protection in severe cold regions. Vacuum tubes contain no water; tube damage will not drain tank water. Magnesium sacrificial anode rod is consumable component and requires regular inspection and replacement. Main tank is non‑pressurized, never connect mains high‑pressure water directly to tank body.
Core Technical Specifications
‑ Available Tank Capacity: 80L /100L /150L /200L /250L /300L ‑ Inner Tank Liner: SUS304‑2B / SUS316L food‑grade stainless steel; replaceable magnesium sacrificial anode rod ‑ Insulation: 45‑55 mm high‑density closed‑cell PU integral foaming, reduce standby overnight heat loss ‑ Working Pressure: Non‑pressurized atmospheric working condition ‑ Solar Collector: Φ58×1800mm heat‑pipe borosilicate evacuated vacuum tube, magnetron sputtering selective absorbing coating ‑ Circulation Mode: Active forced circulation, equipped with circulation pump + differential‑temperature controller ‑ Heat‑transfer Medium: Antifreeze fluid optional for cold‑climate anti‑freeze ‑ Auxiliary Feeding: Need matched feed‑tank with float‑valve for automatic water refilling ‑ Auxiliary Heating: Optional 1500‑3000W built‑in electric heating element ‑ Outer Casing & Bracket: Color‑coated galvanized / stainless‑steel outer shell, heavy‑duty hot‑dip galvanized mounting bracket ‑ Typical Service Life: 13‑18 years under standardized routine maintenance ‑ Certifications: CE, ISO9001 available for export shipments
Application Scenarios
‑ 80‑150L: 2‑4‑person small‑medium family domestic hot‑water ‑ 200‑300L: 4‑7‑person large‑size household hot‑water demand ‑ Rooftop collector installation, tank can be placed indoors or on roof; residential new build & renovation projects ‑ Cold frost‑prone areas, locations requiring low‑leakage risk (heat‑pipe tube without inner water) ‑ Households with gravity water‑supply mode
Collectors need minimum 4‑6 hours effective direct sunlight daily. Avoid shading from trees and surrounding buildings. Confirm rooftop load‑bearing capacity before installation.
| Feature | 80L‑300L Non‑Pressurized Heat Pipe Pump Vacuum Tube Solar Warmer | Ordinary Non‑pressurized All‑glass Vacuum Tube Solar Heater | Passive Thermosyphon Heat‑pipe Solar Heater |
|---|---|---|---|
| Circulation | Active forced circulation with pump & controller | Passive thermosyphon, no pump | Passive thermosyphon, no pump |
| Water inside vacuum tube | No water inside tube, heat‑pipe phase‑change | Domestic water flows inside tube | No water inside tube, heat‑pipe phase‑change |
| Tube broken consequence | No water leakage | Whole tank water drains out | No water leakage |
| Tank position | Collector on roof, tank can be indoor | Tank must install above collectors | Tank must install above collectors |
| Tank pressure | Non‑pressurized, need feed tank | Non‑pressurized, need feed tank | Non‑pressurized, need feed tank |
| Power demand | Need power for pump and controller | Zero power for circulation | Zero power for circulation |
Key Buying Considerations
- Power supply: Guarantee stable power supply for circulation pump and differential‑temperature controller.
- Water‑supply condition: Main tank is non‑pressurized; matched feed‑tank is required, strictly prohibit direct connection to municipal high‑pressure tap‑water.
- Climate adaption: Heat‑pipe tube avoids tube freezing damage; add antifreeze fluid for pipeline protection in extremely cold zones. SUS316L liner recommended for coastal salt‑spray and high‑hard‑water‑quality locations.
- Quotation confirmation: Confirm full set including heat‑pipe vacuum tube collectors, non‑pressurized tank, pump & controller workstation, feed‑tank, bracket, sealing fittings and optional electric heating.
- OEM support: Custom tank capacity, collector quantity and brand logo for bulk export orders.
- Export compliance: CE & ISO9001 certification documents available for overseas customs clearance.
Installation & Routine Maintenance
Installation shall be completed by professional certified solar installers. Adjust heat‑pipe collector tilt angle according to local latitude. Complete system pressure‑leakage test before commissioning. Never activate electric heating unless tank is fully filled with water.
‑ Every 3‑6‑month inspection: Clean dust on vacuum tube surface; check pump operation, controller parameters and pipe joints for leakage. ‑ Every 1‑2‑year professional service: Replace exhausted magnesium sacrificial anode rod; inspect antifreeze fluid concentration; check bracket anti‑rust fastening status.
FAQ
Q: What is main advantage of heat‑pipe vacuum tube?
A: No domestic water inside vacuum tube. When vacuum tube is damaged, there is no water leakage, system still can keep running. Good anti‑freeze performance for cold‑climate regions。
Q: Why this model needs circulation pump?
A: It is active forced‑circulation system. With pump driving circulation, storage tank can be placed indoors, no need to install tank above collectors like passive thermosyphon type.
Q: Is this tank pressurized?
A: No. It is non‑pressurized atmospheric tank. Hot‑water outlet pressure depends on gravity water‑head height; auxiliary feed‑tank is required for automatic water refilling.
Final Conclusion
80L‑300L Non‑Pressurized Heat Pipe Pump Vacuum Tube Solar Energy Hot Water Warmer is reliable active split solar hot‑water solution for households. Adopting heat‑pipe vacuum tube collectors, vacuum tubes contain no water; tube breakage will not cause water leakage. Circulation pump and differential‑temperature controller realize forced circulation, storage tank can be arranged flexibly. Multiple‑capacity options satisfy different‑size‑family hot‑water demands. Optional electric auxiliary heating ensures hot‑water supply under insufficient‑sunlight weather. Note main tank is non‑pressurized, needs feed‑tank and power supply for pump workstation. Professional installation and periodic maintenance guarantee long‑term stable domestic hot‑water output.
