Large-scale Non-pressurized Solar Systems
Large-scale Non-pressurized Solar Water Heating Systems Engineering Solution Overview
Large-scale non-pressurized solar water heating systems are engineered centralized hot water solutions designed for continuous operation in commercial, institutional, and industrial projects.
Unlike standard catalog-based products, these systems are designed based on real engineering data such as building load profiles, climate conditions, and energy consumption patterns.
We have delivered solar hot water systems for hotels, hospitals, schools, and industrial facilities across Africa, the Middle East, and Southeast Asia.
The system operates under atmospheric pressure, ensuring high safety, simple structure, and low maintenance cost, making it suitable for large-scale continuous hot water demand.
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Engineering Specifications
|
System Type |
Non-pressurized solar hot water system |
|
Design Basis |
Building load + climate + usage pattern |
|
Operation Mode |
Atmospheric pressure open-loop system |
|
Solar Contribution |
50%–80% (project optimized) |
|
Tank Volume |
500L – 100,000L+ |
|
Collector Type |
Flat plate / Vacuum tube |
|
Heat Exchange |
Direct / Coil / Plate exchanger |
|
Circulation Mode |
Natural / Pump-assisted |
|
Backup System |
Boiler / Heat pump / Electric heater |
|
Insulation |
High-density polyurethane foam (50–100mm) |
|
Tank Material |
SUS304 / SUS316 / Enamel steel |
|
Design Life |
15–25 years |
|
Control System |
PLC / Smart controller optional |
|
Engineering Standard |
ISO / CE / EN (project-based) |
Engineering Advantages
Real engineering-based design based on actual project load calculations.
01
Proven international project experience across multiple climate zones.
02
Optimized lifecycle cost with reduced long-term energy consumption.
03
High system reliability with backup heating integration.
04
Modular expansion design for future capacity growth.
05
Case 1: Hotel Project – Kenya
Capacity: 30,000L/day
System: Vacuum tube + boiler backup
Result: Stable operation under tropical climate
Energy saving: 60–65% compared to conventional heating
Case 2: Hospital Project – Saudi Arabia
Capacity: 50,000L/day
System: Flat plate + heat pump hybrid
Result: Continuous 24/7 hot water supply
Case 3: University Dormitory – Vietnam
Capacity: 20,000L/day
Result: Payback period approximately 2.5–3 years
System Types
Flat Plate System
High solar radiation regions
01
Vacuum Tube System
Cold or variable climates
02
Central Rooftop System
Institutional buildings
03
Split System
Complex building structures
04
Hybrid System
Continuous hot water demand
05
ROI & Energy Performance Analysis
|
Energy saving rate |
50%–80% |
|
Fuel cost reduction |
Up to 70% |
|
Payback period |
2–5 years |
|
Service life |
15–25 years |
System performance varies depending on climate conditions, usage patterns, and system configuration.
1. Daily hot water consumption
2. Peak usage time
3. Building type and occupancy
4. Local solar radiation data
5. Climate temperature range
6. Installation conditions
We provide full engineering services including system sizing, heat load calculation, and technical drawings.
Certifications & Manufacturing Capability
ISO 9001 Quality Management System
CE certification (project-based compliance)
EN solar thermal standards (optional)
OEM / ODM manufacturing support
Global export experience
All systems are manufactured under strict quality control procedures.
FAQ
As one of the most professional large-scale non-pressurized solar systems manufacturers and suppliers in China, we're featured by quality products and competitive price. Please rest assured to wholesale hot sale large-scale non-pressurized solar systems for sale here from our factory. For customized service and OEM service, contact us now.
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