Study of Cylindrical Honeycomb Solar Collector

Table 2

The median values of hourly solar radiation for the month of May [16], the values of angle of incidence of the beam radiation on the flat plate with local time (calculated for May, 22) according to the procedure detailed by Duffie and Beckman [17], and the values of transmittance 𝜏(𝜃) calculated for 10 hrs and 11 hrs.

Local time (hr)	7	8	9	10	11	12	13	14	15	16	17	18
Hourly global solar radiation, Hn (kW h/m^2)	0.18	0.40	0.59	0.78	0.90	0.94	0.93	0.88	0.76	0.56	0.38	0.17
Incident angle, 𝜃	—	—	45.5°	32.4°	19.6°	9.3°	12.5°	24.6°	37.6°	50.7°	—	—
Transmittance, τ(θ)	—	—	—	0.13	0.17	—	—	—	—	—	—	—