=
H.Thomanson, energy increase of 30%
non-specular mirrors used by sherman, babor and others [11-15]
Solar collector mounted vertically
Includes correlation for reflectance at large angles of incidence
Takes into account beam and diffuse radiation
preliminary impovment of 1.6+/-0.6 over straight collector
uses spectrally averaged data for reflectivity, 0.9 new 0.7 weathered, coated with SiO
optimum performance when angle between panel and reflector is 90 degrees
focus on winter improvment
reccomends reflector length of twice the height of the panel in winter, 1.6 in summer
good graph showing enhansement factor of the array