Components of Solar Thermal Collectors Flashcards
1
Q
Efficiency & Thermal Output
A
- Maximize optical absorption
- Good heat transfer from absorber to heat transfer fluid
- Minimize heat losses from absorber to environment
2
Q
Functional Requirements
A
- Low production costs
- Long time and reliability
- Small ecological footprint
3
Q
Components of a Flat Plate Collector (FPC)
A
- Cover Glass
- Air Layer
- Absorber Sheet
- Absorber Tube
- Thermal Insulation
- Frame
4
Q
Absorber Coating Function
A
- Absorb solar irradiation
- Reduce infrared radiative heat losses
5
Q
Absorber Sheet Function
A
Transfer heat to fluid
6
Q
Thermal Insulation Function
A
Reduce Heat Losses
7
Q
Pipe Function
A
Circulation of heat transfer fluid
8
Q
Frame Function
A
Protection
9
Q
Transparent Cover Function
A
- Reduce Heat Losses
- Transmit Solar Radiation to absorber
10
Q
Optical Energy Transport
A
- Direct and Diffuse Irradiance
- Reflection
- Transmittance
- Absorptance
11
Q
Thermal Energy Transport
A
- Heat Gains
- Heat Losses
