☀️ General Info
December 30, 2024
What is a Vacuum Tube Solar Collector?
5.0 (91 reviews)
When thinking of solar energy systems, different technologies come to mind. In this article, we compare vacuum tube collectors with other systems.
3
Collector types
70-92%
Vacuum efficiency
40-60%
Flat panel
15-20
Years lifespan
📑 Contents
Solar Collector Types
🔴 Vacuum Tube Collector
A system with vacuum insulation inside glass tubes. High efficiency, superior winter performance.
✓ Recommended: Ideal for all-season use
🔵 Flat Panel Collector
Glass-covered flat metal absorber plate. Lower efficiency, good performance in summer months.
• Only suitable for warm climates
🟢 PV (Photovoltaic) Panel
Converts sunlight into electricity. Not used for water heating, but for electricity generation.
• Different purpose: Electricity generation
Differences of Vacuum Tube Collector
- ✓Works even at -30°C - Efficient even in winter months thanks to vacuum insulation
- ✓Efficient on cloudy days - Generates energy by using diffuse light as well
- ✓Low maintenance cost - Single tube can be replaced, the whole system doesn\'t change
- ✓70-92% efficiency - 30-40% more efficient than flat panels
- ✓15-20 year lifespan - Long-term investment, fast payback
- ✓Cylindrical design - Catches optimum solar angle throughout the day
Comparison Table
| Feature | Vacuum Tube | Flat Panel |
|---|---|---|
| Efficiency | 70-92% | 40-60% |
| Winter Performance | High | Low |
| Cloudy Weather | Good | Weak |
| Maintenance | Single tube replacement | Panel replacement |
| Lifespan | 15-20 years | 10-15 years |
Which One in Which Case?
| Case | Recommended |
|---|---|
| All-year hot water need | Vacuum Tube |
| Summer-only use | Flat Panel is enough |
| Electricity generation | PV Panel |
| Cold climate regions | Vacuum Tube |
| Summer house/vacation home | Both are suitable |
Get a Vacuum Tube System
As Wholesale Solar Energy, we offer 18, 24, and 30-tube systems at wholesale prices.
