Solar Water Heater System Pressure Evacuated Tube Prototype with Direct‑Plug Connection
This pressure‑type evacuated‑tube solar water heater prototype is a R&D‑oriented test sample equipped with direct‑plug quick‑connection structure. Designed for technical verification, showroom demonstration and pre‑mass‑production validation. It adopts high‑performance borosilicate evacuated tube collectors and fully‑pressurized storage tank, supporting fast plug‑in assembly without complex welding. Compatible with thermosyphon passive circulation or auxiliary active circulation. Delivers mains‑pressure hot‑water output for domestic hot‑water technical evaluation, lab testing and exhibition display. Optional electric backup heating ensures stable hot‑water output under low‑irradiation conditions.
Working Principle
- High‑vacuum borosilicate evacuated tubes capture solar irradiation; selective absorber coating converts sunlight into thermal energy.
- Direct‑plug quick‑plug connectors realize fast mechanical‑seal connection between evacuated tubes and pressurized tank manifold, greatly shortening assembly time.
- Two optional circulation modes: ‑ Passive thermosyphon: Driven by fluid density difference, heat‑transfer medium circulates naturally without circulation pump. ‑ Active circulation: Match external small‑size pump for forced circulation test purpose (prototype‑only function).
- Whole storage tank withstands municipal water pressure, users obtain stable high‑pressure hot‑water directly from tap‑water pipeline.
- Optional built‑in electric heating element serves as heat compensation for performance test under simulated bad‑weather conditions.
Important note: This unit is a technical prototype, mainly for lab / showroom / pre‑production test. For formal household installation, complete pressure‑safety inspection and pressure‑relief valve configuration are mandatory. Direct‑plug joints require periodic sealing inspection. For frost‑prone regions, closed‑loop antifreeze medium is required.
Core Technical Specifications
‑ Prototype Type: Pressurized evacuated‑tube solar water heater (R&D / demo prototype) ‑ Tank Optional Capacity: 100L /150L /200L ‑ Inner Tank Liner: SUS304 / SUS316L food‑grade stainless steel; replaceable magnesium sacrificial anode rod ‑ Insulation: 45‑55 mm high‑density closed‑cell PU foam ‑ Working Pressure: 6‑8 bar pressurized design, equipped with pressure‑relief safety valve ‑ Evacuated Tube: Borosilicate 3.3 glass tube, high‑selectivity absorbing coating; common size Φ58‑1800 mm ‑ Connection Mode: Direct‑plug quick‑plug connection, silicone high‑temperature sealing rings, no‑weld assembly ‑ Circulation Mode: Passive thermosyphon (default) / optional active forced‑circulation test interface ‑ Auxiliary Heating: Optional 2000‑3000W built‑in electric heating element for test use ‑ Outer Casing & Bracket: Galvanized steel / stainless steel frame for prototype test ‑ Certification: Prototype sample for R&D; formal mass‑production version supports CE, ISO9001 certification ‑ Prototype Service Scene: Laboratory performance test, exhibition showroom display, pre‑production technical verification
Application Scenarios
‑ R&D lab performance testing of pressurized evacuated‑tube solar thermal system ‑ Exhibition hall / trade‑show demo prototype ‑ Pre‑mass‑production structural & sealing validation for direct‑plug connection solution ‑ Technical evaluation for new‑generation quick‑assembly solar water heater
Collectors need minimum 4‑6 hours daily direct sunlight for real‑environment performance test. Prototype is not recommended for long‑term unattended household operation without formal validation.
| Feature | Pressure Evacuated‑tube Prototype with Direct‑Plug | Standard Mass‑Production Pressurized Solar Heater | Split Forced‑Circulation Solar System |
|---|---|---|---|
| Product Position | R&D / demo prototype | Formal household finished product | Household / commercial finished product |
| Connection | Direct‑plug quick‑plug, no‑weld assembly | Traditional screw‑thread / welded manifold | Pipe threaded connection |
| Circulation | Thermosyphon passive + reserved active‑test interface | Thermosyphon passive | Pump‑driven forced circulation |
| System Pressure | 6‑8 bar pressurized prototype | 6‑8 bar pressurized | 6‑8 bar pressurized |
| Main Usage | Lab test, exhibition display | Real‑world domestic hot‑water supply | Household & small‑commercial hot‑water |
| Mass‑production Ready | No (prototype) | Yes | Yes |
Key Buying & Testing Considerations
- Prototype attribute: This is test sample, not formal commercial finished goods; pressure‑safety test shall be performed before every test run.
- Direct‑plug sealing: Check silicone sealing rings regularly; avoid over‑twisting during plug‑in assembly to prevent leakage.
- Tank material: SUS316L liner recommended for salt‑spray & high‑hard‑water test environment. Confirm magnesium anode rod is equipped.
- Circulation selection: Thermosyphon mode runs without pump; active‑circulation interface only for lab‑test purpose.
- Export note: Prototype samples apply for sample‑customs clearance; mass‑production goods can apply for corresponding certifications.
Installation & Prototype Maintenance
Operated by professional R&D‑technicians. Adjust collector tilt angle according to local latitude. Never activate electric heating before tank fully filled with water. Conduct pressure‑leakage test before starting performance test.
‑ Every test cycle: Inspect direct‑plug joints for leakage; check vacuum tube integrity. ‑ Every 3‑6 test cycles: Inspect magnesium anode rod status; inspect sealing ring aging condition.
FAQ
Q: What is the core advantage of direct‑plug connection for prototype?
A: Direct‑plug quick‑connection eliminates welding work. Greatly speeds‑up tube‑replacement, structural‑modification and repeated‑testing in R&D lab, convenient for showroom demo disassembly and assembly.
Q: Can this prototype be directly used for family daily hot‑water supply?
A: No. It is a R&D test prototype. Without complete mass‑production safety‑validation, it is not suitable for long‑term formal household application.
Q: What circulation modes can this prototype verify?
A: Mainly verify passive thermosyphon performance; reserved interface also supports external pump access for active‑circulation comparison test.
Final Conclusion
Pressure Evacuated‑Tube Solar Water Heater Prototype with Direct‑Plug Connection is a dedicated R&D‑demonstration sample for new‑type quick‑assembly pressurized solar thermal technology. Featuring high‑efficiency evacuated‑tube collector, full‑pressure tank and innovative direct‑plug no‑weld quick‑connection structure, it supports thermosyphon passive circulation as well as active‑circulation contrast test. It fits laboratory performance‑verification, trade‑show display and pre‑mass‑production technical assessment. Please note this product is prototype‑oriented; formal household application requires mass‑production iteration and complete safety‑certification.
