The tank has two absorption surfaces: the bottom one is heated by a boosting reflector, and the upper one is covered with a 5cm-thick transparent honeycomb plate and a 2mm thick acryl glass.

• 底吸热面利用辅助反射面加热,而上吸热面则覆盖5cm的透明蜂窝及2mm的有机玻璃板。