PTR Tube
Parabolic Trough Receiver Tube
High-temperature receiver tube for concentrated solar power plants.
- Selective coatingHigh-absorption, low-emission absorber
- Vacuum insulatedGlass envelope minimizes heat loss
- Stainless steel316L absorber for 400°C operation
- Standard length4060mm module, field-proven geometry
| Length | 4060mm |
|---|---|
| Diameter | 70mm |
| Coating | Selective |
| Temp Range | Up to 400°C |
Product Introduction
The EverPeak parabolic trough receiver tube (also called HCE, heat-collection element) is the core component of a concentrating solar power (CSP) loop. It sits at the focal line of a parabolic reflector and absorbs concentrated sunlight to heat a heat-transfer fluid.
The absorber is a stainless-steel tube coated with a high-performance selective layer and enclosed in an anti-reflective borosilicate glass envelope under high vacuum, dramatically reducing convective and radiative losses.
Engineered for 400°C thermal-oil or molten-salt duty, it is supplied in standard 4060mm lengths with bellows and mounting hardware for rapid field assembly.
Main Features
- 316L stainless-steel absorber, 70mm outer diameter
- Pyromark or sputtered selective coating
- Borosilicate glass envelope, AR coated
- High-vacuum annulus below 0.01 Pa
- Bellows ends absorb thermal expansion
- Compatible with thermal oil and molten salt
Specifications
| Model | Length | Absorber OD | Coating | Max Temp | Vacuum |
|---|---|---|---|---|---|
| EP-RT4060 | 4060mm | 70mm | Selective | 400°C | <0.01 Pa |
| EP-RT3000 | 3000mm | 70mm | Selective | 400°C | <0.01 Pa |
| EP-RT2000 | 2000mm | 70mm | Selective | 350°C | <0.01 Pa |
Item Details
Construction
- Absorber
- 316L steel tube carries the working fluid.
- Coating
- Selective layer absorbs >95% of incident light.
- Envelope
- Borosilicate glass with anti-reflective surface.
Performance
- Vacuum
- Annulus below 0.01 Pa cuts heat loss.
- Temp
- Stable up to 400°C with thermal oil.
- Efficiency
- Optical + thermal loss kept minimal.
Field Assembly
- Length
- 4060mm standard for trough rows.
- Bellows
- End bellows handle daily thermal cycling.
- Mount
- Clamps and brackets included.
Core Application Scenarios
- 01CSP parabolic trough plants
- 02Solar process heat loops
- 03Molten-salt demonstration units
- 04Industrial steam pre-heating
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