Specific Heat Capacity and Thermal Conductivity of Foam Glass (Type 150P) at Temperatures from 80 to 400 K1
Specific Heat Capacity and Thermal Conductivity of Foam Glass (Type 150P) at Temperatures from 80 to 400 K1
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DOI：
10.1007/s10765-006-0026-5
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发表时间：
2006-03
影响因子：
2.2
通讯作者：
Dan-Ting Yue;Zhiyuan Tan;Y. Di;X. Lv;Lixian Sun
中科院分区：
文献类型：
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作者：
Dan-Ting Yue;Zhiyuan Tan;Y. Di;X. Lv;Lixian Sun
用精密自动绝热量热计测量了150P型泡沫玻璃的低温比热容，测量范围为79~395K。用平板稳态热流计测定了泡沫玻璃在243~395K温度范围内的导热系数。实验结果表明，150P泡沫玻璃的比热容和导热系数均随温度升高而增大。实验测得的比热容在79~395K之间符合多项式：Cp/J·−1·−1=0.6889+0.3332x−0.0578x2+0.0987x3+0.0521x4−0.0330x5−0.0629x6，式中ex=(T/K−273)/158。实验导热系数与温度(T)的关系可用另一个多项式拟合：λ/W·−1·−1=0.14433+0.00129T−2.834×10−6T2+2.18×10−9T3。此外，根据比热容和导热系数计算了成型玻璃样品的热扩散率(A)，并用多项式对其与温度(T)的函数(T)进行了拟合：a/m2·−S−1=−1.68285+0.01833T−5.84891×10−5T2+8.11942×10−8T3−4.24975×10−11T4。
Low-temperature specific heat capacities of foam glass (Type 150P) have been measured from 79 to 395 K by a precision automated adiabatic calorimeter. Thermal conductivities of the glass foams have been determined from 243 to 395 K with a flat steady-state heat-flow meter. Experimental results have shown that both the specific heat capacities and thermal conductivities of the 150P foam glass increased with temperature. Experimentally measured specific heat capacities have been fitted by a polynomial equation from 79 to 395 K:Cp/J · g−1· K−1=0.6889+0.3332x− 0.0578x2+0.0987x3+0.0521x4− 0.0330x5− 0.0629x6, wherex=(T/K− 273)/158. Experimental thermal conductivities as a function of temperature (T) have been fitted by another polynomial equation from 243 to 395 K: λ/ W · m−1· K−1=0.14433+0.00129T− 2.834 × 10−6T2+2.18 × 10−9T3. In addition, thermal diffusivities (a) of the form glass sample were calculated from the specific heat capacities and thermal conductivities and have been fitted by a polynomial equation as a function of temperature (T):a/m2· s−1=−1.68285+0.01833T− 5.84891 × 10−5T2+8.11942 × 10−8T3− 4.24975 × 10−11T4.