High-Efficiency Flat Plate Split Pressurized Solar Water Heating System
Engineering Solar Thermal System for Global EPC & Distribution Projects
Positioning Statement: A split-type closed-loop solar water heating system designed for reliable domestic hot water supply in residential, hospitality, and commercial buildings. The system is engineered for stable performance, safe operation in cold climates, and integration with conventional heating systems.
Product Overview
This system combines flat plate solar collectors with an indoor pressurized stainless steel storage tank in a split configuration. Heat is transferred via a closed-loop glycol system, separating solar heat transfer fluid from potable water.
This design is widely used in projects requiring:
- Stable domestic hot water supply
- Multi-point pressurized water usage
- Integration with boiler or heat pump systems
- Reliable operation in cold climate conditions
System Configuration:
- Outdoor flat plate solar collectors
- Indoor pressurized stainless steel tank
- Closed-loop glycol circulation system
- Differential temperature pump station
Key Engineering Features
Roof Integration Design
Flat plate collectors designed for residential and commercial roof installation, suitable for both flat and pitched roofs.
Stable Pressure Output
System designed for up to 6 bar working pressure, ensuring stable domestic hot water delivery across multiple outlets.
Selective Absorber Technology
Industrial selective coating applied to aluminum/copper absorber surface to improve solar absorption efficiency and reduce heat loss.
Key characteristics:
- High solar absorption efficiency
- Low emissivity surface
- UV and corrosion resistance
Freeze Protection Design
Closed-loop glycol system ensures stable operation in cold climates. System performance can be maintained in sub-zero environments depending on design configuration.
Typical Project Applications
Hotel Application – Southern Europe
- Application: Centralized domestic hot water system
- Capacity: Approx. 3,000 L/day
- Configuration: Solar pre-heating with auxiliary boiler
- Result: Reduced conventional energy consumption during high solar periods
Residential Application – Central Europe
- Application: multi-building hot water system
- Climate condition: winter operation below -20°C
- Configuration: glycol closed-loop system
- Result: stable domestic hot water supply during winter operation
Project references represent typical installations. Detailed project information can be shared during quotation stage.
Technical Specifications
|
Parameter |
Specification |
|
System Type |
Split pressurized solar water heating system |
|
Heat Transfer |
Closed-loop glycol circulation |
|
Tank Capacity |
150L / 200L / 250L / 300L / 400L / 500L |
|
Working Pressure |
0.6 MPa (6 bar) |
|
Test Pressure |
1.2 MPa (12 bar) |
|
Collector Type |
Flat plate absorber (Al/Cu substrate) |
|
Absorber Coating |
Industrial selective coating |
|
Glass |
3.2mm low-iron tempered glass |
|
Tank Material |
SUS304 / SUS316L stainless steel |
|
Insulation |
50–60mm polyurethane foam |
|
Pump System |
Differential temperature circulation pump |
|
Controller |
Digital solar controller |
|
Compliance |
CE / ISO 9001 / RoHS / Solar Keymark (optional) |
Manufacturing & Quality Control
Production follows standardized industrial processes with consistent inspection procedures.
Quality Control Includes
- Pressure testing of tanks and collectors
- Leak testing of key components
- Batch sampling for thermal performance
- Electrical safety testing of pump and controller systems
OEM / ODM Support
We support customization for:
- Tank capacity and structure
- Pipe connection layout
- Collector size and mounting system
- Branding and packaging
- Project-specific requirements
Certification & Compliance
Depending on model configuration, systems comply with:
- CE requirements for EU market
- ISO 9001 quality management system
- RoHS material compliance
- Solar Keymark certification (selected models)
Certificates and test documents can be provided upon request for project evaluation.
Warranty & After-Sales Support
- Storage tank: 5-year leakage warranty
- Solar collector: 8–10 year performance warranty (model dependent)
- Pump & controller: 1–2 year warranty
- Spare parts available for project orders
Technical support includes:
- System sizing guidance
- Installation documentation
- Remote troubleshooting support
Supply Terms
MOQ
- Standard models: 10 sets
- OEM projects: 1 × 20ft container
Payment Terms
- T/T: 30% deposit, 70% before shipment
- L/C at sight available for large orders
Trade Terms
FOB / CIF / CFR available
Lead Time
15–25 days depending on order volume
Inquiry Process
To prepare a quotation, please provide:
- Project type
- Daily hot water demand
- Installation country and climate conditions
We will provide:
- Technical proposal
- Quotation (FOB/CIF)
- System configuration recommendation
Frequently Asked Questions
Q: What is your Minimum Order Quantity (MOQ)?
A: The MOQ for standard models is 10 sets. For OEM or customized projects, a 20ft container order is recommended for cost efficiency.
Q: Can the system be customized for our project?
A: Yes. We support OEM/ODM customization including tank capacity, hydraulic layout, collector dimensions, mounting structure, and branding.
Q: What is your production lead time?
A: Standard production lead time is 15–25 days depending on order quantity and specifications.
Q: What payment terms do you accept?
A: We usually accept T/T (30% deposit, 70% before shipment). L/C at sight is also available for large EPC orders.
Q: Do you provide technical support for installation?
A: Yes. We provide installation manuals, system diagrams, and remote technical support for EPC contractors and installers.
Q: What certifications do your systems have?
A: Our systems comply with CE, ISO 9001, and RoHS standards. Selected models are certified under Solar Keymark. Documents are available upon request.
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