A Comparative Thermal Performance Assessment of Various Solar Collectors for Domestic Water Heating

Table 1

Insulation materials employed for stratified tanks.

Material types	Composition materials	Thermal conductivity (w.k/m)	Temperature tolerance
Firebrick	Alumina, silica	1	1500 K
Foam glass	Sand, limestone, soda ash	0.05	750 K
Mineral wool	Molten glass, stone, slag	0.5	1000 K
Silica aerogel	Hydrogel siltation	0.01	773 K