| Na2WO4固—固相变贮热性能的测定 |
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| 引用本文： | 刘华亭,武克忠. Na2WO4固—固相变贮热性能的测定[J]. 信阳师范学院学报(自然科学版), 2001, 14(2): 184-185 |
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| 作者姓名： | 刘华亭 武克忠 |
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| 作者单位： | 河北师范大学化学系,河北石家张,050016 |
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| 基金项目： | 河北省教委专项资助项目（97116） |
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| 摘 要： | 利用DTA-TG热分析技术研究了无机塑晶材料Na2WO4的热性能。实验数据表明，Na2WO4的固-固相变焓总和为164.1J/g，是一种有前途的固-固相变贮能材料。固-固相变的机理是随着温度的升高，Na2WO4晶体的晶格发生畸变，晶型由低对称的晶系向高对称的晶系转变，同时引入振动和转动无序，从而吸收热量。
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| 关 键 词： | Na2WO4 固－固相变 DTA方法 贮能材料 钨酸钠 贮热性能 测定 |
| 文章编号： | 1003-0972(2001)02-0184-02 |
Determination of properties of thermal energy storage of Na2WO4 for solid-solid phase transition |
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| LIU Hua ting,WU Ke zhong. Determination of properties of thermal energy storage of Na2WO4 for solid-solid phase transition[J]. Journal of Xinyang Teachers College(Natural Science Edition), 2001, 14(2): 184-185 |
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| Authors: | LIU Hua ting WU Ke zhong |
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| Abstract: | The thermal properties for the inorganic plastic crystals Na 2WO 4 were investigated by using DTA TG technique.The results obtained showed that the total enthalpy change in the solid solid phase change of Na 2WO 4 is 164.1 J/g.These indicate that Na 2WO 4 has good prospect.The mechnism of sdid sdid phase change is that the structure of Na 2WO 4 crystal changed low symmetry into high symmetry with the increasing of temperature,meanwhile,vibration and rotation become disorderly and absorb heat. |
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| Keywords: | Na 2WO 4 solid solid phase change DTA method thermal storage materials |
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