...
首页> 外文期刊>Thermochimica Acta: An International Journal Concerned with the Broader Aspects of Thermochemistry and Its Applications to Chemical Problems >Heat flux calorimetry in intermetallic compound-H-2(g) systems: heat measurements and modeling in the low pressures range
【24h】

Heat flux calorimetry in intermetallic compound-H-2(g) systems: heat measurements and modeling in the low pressures range

机译:金属间化合物-H-2(g)系统中的热通量量热法:低压范围内的热量测量和建模

获取原文
获取原文并翻译 | 示例
           

摘要

A heat conduction calorimeter has been used to determine enthalpies of solid-gas reactions in systems, such as intermetallic compounds-H-2(g). It is shown that the significance of the heat measurements must be carefully analyzed by controlling several parameters, which may influence the heat transfer conditions during the absorption and desorption reactions. For this type of reaction, the measured heat flow is strongly dependent on the heat transfers through the gas phase in the low pressure range (Knudsen regime). It is demonstrated, experimentally and confirmed with simple models, that heat measurements can provide erroneous enthalpies due to our inability to account for the unavoidable modifications of the heat losses in the transition region. Experiments were carried out on the ZrNi-H-2 system. (C) 2001 Elsevier Science B.V. All rights reserved. [References: 19]
机译:导热量热仪已用于确定系统中固体气体反应的焓,例如金属间化合物-H-2(g)。结果表明,必须通过控制几个参数来仔细分析热量测量的重要性,这些参数可能会影响吸收和解吸反应期间的传热条件。对于这种类型的反应,所测得的热流在很大程度上取决于低压范围内(努森制度)通过气相的热传递。实验证明并通过简单的模型进行了证实,由于我们无法解决过渡区域中不可避免的热量损失,因此热量测量会产生错误的焓。实验在ZrNi-H-2系统上进行。 (C)2001 Elsevier Science B.V.保留所有权利。 [参考:19]

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号