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目前,美国正在生产一种填充硫酸钠的吸热天花板。硫酸钠在室温高的条件下能吸收热量而熔化,也能在温度下降时变硬而释放热量,熔化温度范围在摄氏15°—30°之
Currently, the United States is producing a heat-absorbing ceiling filled with sodium sulfate. Sodium sulphate absorbs heat and melts at high temperatures and also hardens and releases heat as the temperature falls, with a melting temperature range of 15 ° -30 ° C