Study of Cylindrical Honeycomb Solar Collector

Table 1

The values of 𝑅² and convective heat transfer coefficients with respect to gap between the honeycomb and the plates. The errors shown are statistical.

Gap (𝐿𝑏) (mm)	𝑅^2	Convective heat transfer coefficient (W m^−2 K^−1)
2.70 ± 0.02	0.932	4.2
3.28 ± 0.06	0.927	3.06
3.82 ± 0.02	0.953	4.38
Reference	0.934	4.4