Sumários
2. Solar Collectors / Lesson 11
29 outubro 2019, 10:00 • Luís Filipe Moreira Mendes
2.1 Flate-plate Collectors
- Temperature distribution between tubes and the collector efficiency factor (6.5)
( ) sections of Duffie and Beckman
2. Solar Collectors / Lesson 10
24 outubro 2019, 12:00 • Luís Filipe Moreira Mendes
2.0 Types of solar collector used as fixed mounted for low and medium temperatures
2.1 Flate-plate Collectors
- Description (6.1)
- Energy balance equation (6.2)
- Temperature distribution (6.3)
- Collector overall heat loss coefficient (6.4)
( ) sections of Duffie and Beckman
1. Solar Radiation and Optics / Lesson 9
22 outubro 2019, 10:00 • Luís Filipe Moreira Mendes
1.5 Radiation Transmission through Glazing
- transmittance-absorptance product (5.5)
- transmittance-absorptance angular dependence (5.6)
- transmittance for diffuse radiation (5.4)
- transmittance spectral dependence (5.7)
- effects of surface layers on transmittance (5.8)
- Absorbed solar radiation (5.9)
- Monthly average absorbed radiation (5.10)
( ) sections of Duffie and Beckman
1. Solar Radiation and Optics / Lesson 10
17 outubro 2019, 12:00 • Luís Filipe Moreira Mendes
1.5 Radiaton Transmission through Glazing
- transmittance spectral dependence (5.7)
- effects of surface layers on transmittance (5.8)
- transmittance-absorptance product (5.5)
- transmittance-absorptance angular dependence (5.6)
- Absorbed solar radiation (5.9)
- Monthly average absorbed radiation (5.10)
1. Solar Radiation and Optics / Lesson 7
15 outubro 2019, 10:00 • Luís Filipe Moreira Mendes
Presentation of the practical work #1
1.4 Radiation characteristics of opaque materials
- absorptance and emmitance (4.1)
- a note on Kirschhoff's law (4.2)
- reflectance (4.3)
- relashionships among absorptance, emmitance and reflectance (4.4)
- calculation of emmitance and absorptance (4.6)
- selective surfaces (4.8)
- mechanisms of selectivity (4.9)
- angular dependence of solar absorptance (4.11)
( ) sections of Duffie and Beckman