Third Generation PV and Other Ways to Utilize Solar Energy Solar - PowerPoint PPT Presentation

Third Generation PV and Other Ways to Utilize Solar Energy Solar Thermal Energy I - Basic Principles Week 6.2.1 Arno Smets

Heat T 2 Temperature, T Solid sensible Phase-change heat latent heat T* Liquid sensible heat T 1 Storage heat, Q s Sensible heat: Latent heat: 𝑅 = 𝑛𝐷 𝑞 𝑈 2 − 𝑈 𝑅 = 𝑛𝜇 1

Conduction Fourier’s law 20 °C 𝑅 𝑑𝑝𝑜𝑒 = −𝑙𝐵 𝑒𝑈 𝑒𝑦 0 °C x

Convection Forced convection Natural convection

Convection Forced convection Newton’s law Natural convection 𝑅 𝑑𝑝𝑜𝑤 = −ℎ𝐵∆𝑈

Radiation http://en.wikipedia.org/wiki/Thermal_radiation

Radiation Black body: 𝐹 𝑐 = 𝜏𝑈 4 Grey body: 4 − 𝑈 4 ) 𝑅 = 𝜁𝐵𝜏(𝑈 2 1 σ = 5.6697x10 -8 W/m 2 K 4 http://en.wikipedia.org/wiki/Thermal_radiation