Abstract:
The temperature increase due to incident solar radiation has
an adverse impact on the electrical output of photovoltaic (PV)
modules. A theoretical model of the fabricated and tested bionic
evaporation backside cooling was established and verified by experimental
investigation. A micro fluidic structure featuring micro
pores consists of two polymer layers attached on the backside
of a PV cell model. The thermal performance of roof mounted
PV modules with rear panel air ventilation was mathematically
described and extended by the cooling capabilities of the developed
bionic evaporation foil. The experimental investigations
performed in a roof equivalent test environment consisting of a
wind tunnel within a climate chamber were in good accordance
to the established model. Experimentally temperature reductions
at low incident solar power of less than 575W causing an efficiency
gain for up to 4:8% have been demonstrated while the
model implicates an efficiency increase of 10% for real roof systems
at an incident solar radiation of 1000W.
Description:
Papers presented to the 12th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Costa de Sol, Spain on 11-13 July 2016.
