Abstract :
A transient 3-D mathematical model for solar flat plate collectors has been developed. The model is based on setting mass and energy
balances on finite volumes. The model allows the comparison of different configurations: parallel tubes collectors (PTC), serpentine tube
collectors (STC), two parallel plate collectors (TPPC), and other non-usual possibilities like the use of absorbent fluids with semitransparent
or transparent plates. Transparent honeycomb insulation between plate and cover can also be modelled. The effect of temperature
on the thermal properties of the materials has also been considered. The model has been validated experimentally with a commercial
PTC. The model is a useful tool to improve the design of plate solar collectors and to compare different configurations. In order to show
the capabilities of the model, the performance of a PTC collector with non-uniformity flow is analysed and compared with experimental
data from literature with good agreement.
2009 Elsevier Ltd. All rights reserved
