Cost-Effective Passive Solar Water Heater with Long-Lasting Components

• Customization: Available
• After-sales Service: 3 Years
• Warranty: 3 Years
• Model NO.: YJR-PS
• Max. Capacity: >200L
• Structure: Compact Type
• Pressure: Pressurized
• Interior Material: Stainless Steel
• Collector Components: Glass Vacuum Tube
• Composition: Compact Type Solar Collector with Tank
• Certification: ISO9001, CCC
• Item Name: Intergrated Vacuum Tube Solar Water Heater
• Vacuum Tube: 58 * 1800 with Krd Titanium Tube
• Water Tank: Inner Tank 0.5mm3042b Imported Food Grade Stainles
• Bracket: Aluminum Alloy Baking Paint Spray, Strong Corrosio
• Customized Design: Available
• Transport Package: Safety Standard Export Packaging
• Specification: 15/18/20/24/30 tubes
• Trademark: YIJIAREN or Customized
• Origin: Jiangsu, China
• HS Code: 8419190000
• Production Capacity: 50000 Sets/Year
• Package Size: 230.00cm * 90.00cm * 80.00cm
• Package Gross Weight: 130.000kg

Product Description

Passive Solar Water Heater

Features

Model	YJR-PS
Collector Material	KRD Tubes
Pressurized or not	Pressurized
Sepcification	58*1800mm
Outer Tank	Galvanized steel or stainless steel
Inner Tank	304/316L Stainless Steel
Insulation Layer	Polyurethane Foam 50mm
Package	Wooden Case
Capacity per year	100,000pcs

The Operating Principle of Passive Solar Water Heater

A non-powered solar water heating system operates under pressure. It is a solar water heater that integrates solar heat collection, heat storage, and heat exchange.

The system works as follows: vacuum tubes absorb sunlight and convert it into heat energy to warm the water in the water tank. Municipal tap water directly undergoes heat exchange through a single-flow channel/double-flow channel inside the water tank. 

(The diagram below illustrates the principle of vacuum tubes absorbing solar energy to heat water)

Configuration

Vacuum Tubes: KRD vacuum tubes, 58*1800mm
Water Tank: Diameter 460/470mm (customizable)
Inner Liner: Stainless steel SUS304/316L
Outer Shell: Color plate/stainless steel
Insulation Layer: 50mm polyurethane foam
Bracket: 1.5mm galvanized sheet/1.2mm stainless steel
 

The main differences between non-powered solar energy and ordinary solar energy lie in their operational principles, energy consumption, water quality assurance, water pressure guarantee, and installation scenarios, etc.‌

Operational Principles

Both non-powered solar systems and conventional solar water heaters employ vacuum tubes to harness solar energy, utilizing natural circulation to heat water in the storage tank. Neither requires electrical power, relying entirely on solar radiation for heating. The core distinctions lie in their operational mechanisms:

Passive Solar Systems: Function under pressure by allowing municipal tap water to pass through stainless steel pipes inside the tank, where it undergoes secondary heat exchange with the stored hot water. (Note: These systems require access to municipal water supply and are not suitable for areas without it.)
Conventional Solar Water Heaters: The non-pressurized system depends on gravitational water
level differences for water supply, leading to relatively low outlet pressure.

Energy Consumption

‌Passive Solar Systems: Zero energy consumption, completely electricity-free. Features include resistance to tube explosion, freeze tolerance, and minimal energy loss.
Conventional Solar Water Heaters: Require electrically driven circulation pumps and booster pumps, resulting in higher energy consumption.
Water Quality Assurance

‌ Passive Solar Systems: Adopt closed-loop stainless steel 304/316 channel heat exchange with pressurized water outlet, ensuring clean water without secondary pollution.
Conventional Solar Water Heaters: Water stored in the tank for prolonged periods is prone to limescale buildup and other quality issues.
Water Pressure Stability

‌Passive Solar Systems: Operate under constant pressure via municipal water supply, ensuring consistent and sufficient hot water pressure.
Conventional Solar Water Heaters: Non-pressurized tanks lead to unstable water pressure and poor user experience due to low outlet pressure.
Installation Scenarios

Passive Solar Systems support series-parallel connection of multiple modules to meet diverse water demand. Compared to conventional systems, they save on pipes, valves, and pumps, reducing installation costs. Additionally, they eliminate the risk of tube explosion for safer and more comfortable hot water use.

 Vacuum Tubes Passive Solar Water Heater

Flat Plate Passive Solar Water Heater

Horizontal Vacuum Tubes Passive Solar Water Heater

Operate under pressure, with stable hot water outlet pressure, ensuring a comfortable bathing experience.
Low operating cost, no need for additional power, achieving energy conservation and zero loss.
The system doesn't require an additional large water tank, reducing the bearing load.
Can be used as a pre - heating heat source and linked with other energy sources.
Multiple modules can be used in series or parallel according to water consumption.
The product is modular, with simple installation and convenient transportation.

Thickened antifreeze flat plate
Hot - dip galvanized sheet
It can operate with antifreeze, suitable for all kinds of complex environments, resistant to hail and extreme cold
No risk of vacuum tube bursting, stable and reliable
Operate under pressure, more stable in use and with low failure rate

-Customized oversized and thickened silicone

-Temperature retention ring 

-Quick vent

-OMR solar collector tube features high solar
collection efficiency

-Double channel stainless steel pipe

-Thickened hot-dip galvanized steel sheet

Yijiaren Passive Solar System – Five Key Advantages

1. Cost-Effective System

Space-saving design (reduces building footprint)
Lower structural load requirements
Zero operational energy consumption
Minimal maintenance needs

 

2. High System Efficiency

Open-tank heat storage + closed-loop high-efficiency heat exchange
KRD vacuum tubes boost heat collection by 10%
Natural circulation ensures optimal thermal performance

 

3. Enhanced Safety

Explosion-proof tubes, leak-free design
Safe drinking water (no secondary contamination)
Fewer external pipelines, reduced heat loss
Secure multi-header connection technology

 

4. Easy & Fast Installation

Compatible with hybrid energy systems
Simplified pressurized design (minimal pipes/valves/pumps)
Modular assembly for quick deployment

 

5. Superior User Experience

Pressurized water output for consistent comfort
Stagnation-free design ensures water purity
Silent, pump-free operation
Thermostatic valve controls temperature precisely (anti-scalding)

Passive Solar Energy Project Cases 

About Us

Jiangsu Obuy New Energy Development Co., Ltd. is an integrated industrial and trading enterprise specializing in the design, production, sales, installation, and after-sales service of solar and heat pump products. Operating under its proprietary brand "YIJIAREN", the company holds ISO and CCC certifications, ensuring stringent quality control. It provides energy-saving intelligent manufacturing and integrated smart control solutions based on "Solar+" and "Air Energy+" multi-energy hybrid systems, serving global clients. Our products have been successfully exported to more than 50 countries and regions across the globe, including Europe, the United States, Germany, Italy, Japan, Russia, Australia, Southeast Asia, and the Middle East

Solar Energy Product Series: Passive Solar Systems, Heat Pipe Solar Collectors, Flat Plate Solar Collectors, Evacuated Tube Solar Collectors, Double-Glass Heat Pipe Collectors, Metal Heat Pipe Collectors.

 

Heat Pump Product Series: Air Source Heat Pumps, Water Source Heat Pumps, Dual Source Heat Pumps, High Temperature Heat Pumps, Cooling & Heating Heat Pumps, Swimming Pool Heat Pumps, Aquaculture Heat Pumps, Greenhouse Heat Pumps, Special Application Heat Pumps, Heat Pump Dryers, Split-Type Heat Pump Dryers, Integrated Heat Pump Dryers, and Waste Heat Recovery Heat Pumps.

 

Our products are widely applied across commercial, agricultural, and industrial sectors including apartments, hotels, schools, hospitals, factories, nursing homes, gyms, swimming pools, aquaculture farms, and greenhouses. We offer 3,000+ energy-efficient solutions and have successfully implemented 8,000+ customer cases spanning various industries.

 

We offer customized production based on technical drawings, providing complimentary tailored solutions along with expert guidance, installation, construction, commissioning, and after-sales service backed by 20 years of engineering experience. Our mission is to empower clients in achieving low-carbon, energy-efficient, consumption-reducing, and emission-abatement objectives.

We look forward to partnering with visionary clients on the path toward sustainable, eco-friendly energy conservation. We firmly believe our relentless commitment will illuminate your business with brilliance.

Customer visit

Certificates

Packaging & Shipping

Our Service

1. Our well-trained and experienced team offers exceptional patience and service.

2. Sample can be offered, with sample charge and courier fee by buyer's side.

3. We have full stock, and can deliver within short time. Many styles for you to choose. 

4. OEM and ODM order are accepted, any kind of logo printing or design are available.

5. Over 8000 engineerings with great success provided by YIJIAREN.

6. We highly value your feedback upon receiving the goods and are committed to resolving any issues promptly.

7. We ensure the confidentiality of your sales area, design concepts, and all private information.

8. We have rich experience of design, manufacture and sell Solar Water Heater and heat Pump, we cherish every order from our honor.

9. You're warmly invited to visit our factory at your convenience.

FAQ

1. Q: What is your company business, brand, and product?

     A: We engaged in manufacturing, R&D, Quality control and maintenance for solar water heater system, air source heat pump, heat pump components and accessories accordingly.

2. Q: Can we add our brand?
     A: Yes. We brand "YIJIAREN" , however, we provide OEM and ODM service.

3. Q: What certificates do you have?
      A: We have ISO9001, ISO14001 CCC certificates.

4. Q: How can we be your agent/distributor/exclusive agent?
      A: At least one year of cooperation is required as a base of agent/distributor/exclusive agent.

5. Q: What after-sales service you provide?
     A: We provide 12-24 months warranty service according to our warranty policy. (electrical appliances and accessories 12 months, solar water heater 24 months)

6. Q: What is the leading/production time?
      A: Generally it is 3-7 working days if the goods are in stock. or it is 15-25 working days if the goods are not in stock, it is according to quantity.

7. Q: Why we choose you?
      A: We offer customized services tailored to your specific requirements, including technical consulting and system design. With over 15 years of expertise in solar water heaters and air source heat pumps for commercial and industrial heating&cooling system, we provide comprehensive solutions for all engineering projects. By continuous quality improving, we guarantee the clients high quality products, and maintain a healthy, stable and sustainable development. We eagerly anticipate establishing a long-term partnership with you.