Table 3.
Comparison of amount of heat transferred for three materials in light source space during 9 hours

	Concrete	Korean Paulownia	Medium Density Fiberboard
Conduction	0.026 W (1.18%)	0.006 W (1.22%)	0.006 W (1.34%)
Convection	0.829 W (37.36%)	0.167 W (36.06%)	0.136 W (29.63%)
Radiation	1.364 W (61.46%)	0.291 W (62.72%)	0.316 W (69.03%)
Total	2.219 W	0.464 W	0.458 W
Total energy transferred to vial and water	18.852 kJ	19.980 kJ	19.646 kJ