Total aperture area(m²)
system total aperture area (m2)
Reflector rim angle
reflector rim angle
Concentration
concentration ratio
Reflector rim angle
reflector rim angle
Concentration
concentration ratio
Reference collector efficiency
reference collector efficiency for beam radiation.
Total fluid flowrate
system design fluid flow rate (l/h) (total over all rows).
Order loss coeffs per unit of tube
linear loss coefficient per unit collector tube length (W/mK)
quadratic loss coefficient per unit collector tube length (W/mK
2)
where:
number of collector units in each serially-connected collector
number of collector rows configured in parallel
reflector width (m) (
4.0)
outer radius of absorber tube (mm)
intercept factor
mirror reflectance
collector unit aperture area (m
2)
cover tube transmittance at normal incidence
absorber tube absorptance at normal incidence
linear loss coefficient per unit aperture area (W/ m
2 K) (
1)
quadratic loss coefficient per unit aperture area (W/m
2K
2) (
1)
distance the receiver tube extends beyond the reflector at end of each collector unit (m)
collector unit reflector length (m) (
)
