Abstract:

We develop a new and highly efficient flat solar bodythe black porcelain composite ceramic solar plate. The solar body is constructed through slip casting with ordinary china clay as raw material, whose surface is sprayed with industrial solid wastes mixed black porcelain mud. The body is formed through firing at 1 200℃ by continuous roller kiln after drying, whose sunlight absorption rate is 0.95. We further present the construction method of ceramic solar plate roof solar heating system. The system shares structure layer, thermal insulation layer, waterproof layer with a building, is integrated with a building and has the same lifetime as a building. Its heat insulation and preservation effect is better than that of ordinary roof. Daily acquired heat of the solar heating system is 8.6 MJ/m², much higher than the national standard 7.0 MJ/m², by the comparison of heat collection efficiency of the system and that of vacuum glass tube water heater. The cost of solar energy is lower than that of conventional energy.

Key words: ceramic solar plate, solar roof, integration with building, solar heating, thermal efficiency