Standardization of high‐temperature specific heat capacity test parameters of fire‐resistant gypsum board

2021 ◽  
Author(s):  
Yu Feng ◽  
Jihong Ye
Keyword(s):  
Heat Capacity ◽  
High Temperature ◽  
Specific Heat ◽  
Specific Heat Capacity ◽  
Gypsum Board ◽  
Test Parameters

Measurement of Refractive Index, Specific Heat Capacity, and Thermal Conductivity for Ag6.0In4.5Sb60.8Te28.7at High Temperature

2009 ◽  
Vol 48 (5) ◽  
pp. 05EC02 ◽  
Author(s):  
Masashi Kuwahara ◽  
Osamu Suzuki ◽  
Kouichi Tsutsumi ◽  
Takashi Yagi ◽  
Naoyuki Taketoshi ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Heat Capacity ◽  
Refractive Index ◽  
High Temperature ◽  
Specific Heat ◽  
Specific Heat Capacity

Novel measurement of isobaric specific heat capacity for kerosene RP-3 at high temperature and high pressure

2016 ◽  
Vol 638 ◽  
pp. 113-119 ◽  
Author(s):  
X.K. Gao ◽  
X. Wen ◽  
H. Zhou ◽  
Q. Zhu ◽  
J.L. Wang ◽  
...  
Keyword(s):  
Heat Capacity ◽  
High Pressure ◽  
High Temperature ◽  
Specific Heat ◽  
Specific Heat Capacity ◽  
Isobaric Specific Heat

scholarly journals Characterization of AlN-based Ceramic Composites for Use as Millimeter Wave Susceptor Materials at High Temperature: High Temperature Thermal Properties of AlN:Mo with 0.25% to 4.0% Mo by Volume

MRS Advances ◽  
2019 ◽  
Vol 4 (27) ◽  
pp. 1531-1542 ◽  
Author(s):  
Brad W. Hoff ◽  
Frederick W. Dynys ◽  
Steven C. Hayden ◽  
Rachael O. Grudt ◽  
Martin S. Hilario ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Heat Capacity ◽  
High Temperature ◽  
Thermal Diffusivity ◽  
Specific Heat ◽  
Specific Heat Capacity ◽  
Elevated Temperatures ◽  
Ceramic Composites ◽  
Dsc Measurements ◽  
Mo Content

ABSTRACTIn order to begin to evaluate and model the suitability of high temperature ceramic composites, such as AlN:Mo, as susceptor materials for power beaming applications, the electromagnetic, thermal, and mechanical properties of the material must be known at elevated temperatures. Work reported here focuses on the development of thermal property datasets for AlN:Mo composites ranging from 0.25% to 4.0% Mo by volume. To calculate thermal conductivity of the AlN:Mo composite series, specific heat capacity, thermal diffusivity, and density data were acquired. The calculated specific heat capacity, Cp, of the set of AlN:Mo composites was, on average, found to be approximately 803 J/kgK at 100 °C and to increase to approximately 1133 J/kgK at 1000 °C, with all values to be within +/- 32 J/kgK of the average at a given temperature. These calculated specific heat capacity values matched values derived from DSC measurements to within the expected error of the measurements. Measured thermal diffusivity, α, of the set of AlN:Mo composites was, on average, found to be approximately 3.93 x 10-1 cm2/s at 100 °C and to increase to approximately 9.80 x 10-2 cm2/s at 1000 °C, with all values within +/- 1.84 x 10-2 cm2/s of the average at a given temperature. Thermal conductivity, k, for the set of AlN:Mo composites was found to be approximately 108 W/mK at 100 °C and to decrease to approximately 38 W/mK at 1000 °C, with all values within +/- 5.3 W/mK of the average at a given temperature. Data trends show that increasing Mo content correlates to lower values of of Cp, α, and k at a given temperature.

Thermophysical Properties of Steam–Air Under High Temperature and High Pressure

2019 ◽  
Vol 142 (4) ◽  
Author(s):  
Zhengbin Wu ◽  
Shu Jiang ◽  
Lei Wang ◽  
Yiguo Zhang
Keyword(s):  
Thermal Conductivity ◽  
Heat Capacity ◽  
High Pressure ◽  
High Temperature ◽  
Specific Heat ◽  
Specific Heat Capacity ◽  
Heavy Oil ◽  
Thermophysical Properties ◽  
Steam Injection ◽  
Steam System

Abstract Air-assisted steam injection is a new technique for heavy oil reservoir exploitation. This paper focused on the thermophysical properties of the air/steam system, such as density, viscosity, specific heat capacity, enthalpy, and thermal conductivity coefficient, and these have been calculated using the Redlich–Kwong equation of state (RK EOS). The viscosity of the air/steam system under high temperature and high pressure was calculated with the corresponding state principle and rectified with the Dean–Stiel residual viscosity method. The results showed that compared with the saturated steam of the same mass, the viscosity, specific heat capacity, thermal conductivity, and enthalpy of the air/steam mixture decreased, while the specific volume increased, which indicated that the addition of air to steam weakened the thermal effect of the steam and makes use of the heat insulation and thermal expansion of air. This study can provide guidance for parameter design of air-assisted steam injection for heavy oil recovery.

Experimental Study on the Specific Heat Capacity Measurement of Water-Based Al2O3-Cu Hybrid Nanofluid by using Differential Thermal Analysis Method

2019 ◽  
Vol 15 ◽  
Author(s):  
Andaç Batur Çolak ◽  
Oğuzhan Yıldız ◽  
Mustafa Bayrak ◽  
Ali Celen ◽  
Ahmet Selim Dalkılıç ◽  
...  
Keyword(s):  
Heat Capacity ◽  
Specific Heat ◽  
Specific Heat Capacity ◽  
Thermophysical Properties ◽  
Volume Concentration ◽  
Pure Water ◽  
Heat Capacity Measurement ◽  
Experimental Results ◽  
Hybrid Nanofluid ◽  
Capacity Measurement

Background: Researchers working in the field of nanofluid have done many studies on the thermophysical properties of nanofluids. Among these studies, the number of studies on specific heat are rather limited. In the study of the heat transfer performance of nanofluids, it is necessary to increase the number of specific heat studies, whose subject is one of the important thermophysical properties. Objective: The authors aimed to measure the specific heat values of Al2O3/water, Cu/water nanofluids and Al2O3-Cu/water hybrid nanofluids using the DTA method, and compare the results with those frequently used in the literature. In addition, this study focuses on the effect of temperature and volume concentration on specific heat. Method: The two-step method was used in the preparation of nanofluids. The pure water selected as the base fluid was mixed with the Al2O3 and Cu nanoparticles and Arabic Gum as the surfactant, firstly mixed in the magnetic stirrer for half an hour. It was then homogenized for 6 hours in the ultrasonic homogenizer. Results: After the experiments, the specific heat of nanofluids and hybrid nanofluid were compared and the temperature and volume concentration of specific heat were investigated. Then, the experimental results obtained for all three fluids were compared with the two frequently used correlations in the literature. Conclusion: Specific heat capacity increased with increasing temperature, and decreased with increasing volume concentration for three tested nanofluids. Cu/water has the lowest specific heat capacity among all tested fluids. Experimental specific heat capacity measurement results are compared by using the models developed by Pak and Cho and Xuan and Roetzel. According to experimental results, these correlations can predict experimental results within the range of ±1%.

Development of the room temperature protocol based on room temperature ionic liquids and surfactant ionic liquids for the synthesis of derivatives of 2-amino-thiazoles and thermo-physical analysis of the synthesized derivatives using TGA-DSC.

2020 ◽  
Vol 10 ◽  
Author(s):  
Chandrakant Sarode ◽  
Sachin Yeole ◽  
Ganesh Chaudhari ◽  
Govinda Waghulde ◽  
Gaurav Gupta
Keyword(s):  
Thermal Analysis ◽  
Heat Capacity ◽  
Ionic Liquids ◽  
Specific Heat ◽  
Specific Heat Capacity ◽  
Room Temperature ◽  
Heat Capacity Data ◽  
General Strategy ◽  
Capacity Data ◽  
Derivatives Of

Aims: To develop an efficient protocol, which involves an elegant exploration of the catalytic potential of both the room temperature and surfactant ionic liquids towards the synthesis of biologically important derivatives of 2-aminothiazole. Objective: Specific heat capacity data as a function of temperature for the synthesized 2- aminothiazole derivatives has been advanced by exploring their thermal profiles. Method: The thermal gravimetry analysis and differential scanning calorimetry techniques are used systematically. Results: The present strategy could prove to be a useful general strategy for researchers working in the field of surfactants and surfactant based ionic liquids towards their exploration in organic synthesis. In addition to that, effect of electronic parameters on the melting temperature of the corresponding 2-aminothiazole has been demonstrated with the help of thermal analysis. Specific heat capacity data as a function of temperature for the synthesized 2-aminothiazole derivatives has also been reported. Conclusion: Melting behavior of the synthesized 2-aminothiazole derivatives is to be described on the basis of electronic effects with the help of thermal analysis. Additionally, the specific heat capacity data can be helpful to the chemists, those are engaged in chemical modelling as well as docking studies. Furthermore, the data also helps to determine valuable thermodynamic parameters such as entropy and enthalpy.

Sign in / Sign up

Export Citation Format

Share Document