Heat Capacity Archives - Thermtest Inc.

Physical Properties of 7-Methyl-1,5,7-triazabicyclo[4.4.0]dec-5-ene (mTBD)

Author(s): Artur Dahlberg, Daniel Cederkrantz, Herbert Sixta, Ilkka Kilpeläinen, Joanna Witos, Jussi Helminen, Nahla Osmanbegovic, Paulus Hyväri, Petri Uusi-Kyyny, Susanne K. Wiedmer, Ville Alopaeus, Zachariah Steven Baird

7-Methyl-1,5,7-triazabicyclo[4,40]dec-5-ene (mTBD) is an important industrial chemical that is commonly used as a catalyst. Prior to the research conducted by Baird et al, the only available data ...

Keywords: density, Heat Capacity, liquid, liquid vapor pressure, mTBD, PC-SAFT, Thermal Conductivity, thermodynamic properties, THW, Transient Hot-Wire, Vapor pressure

Experimental and numerical investigation of flow and thermal effects on flexible printed circuit board

Author(s): C. H. Lim, I. A. Azid, M. S. Abdul Aziz, M. Z. Abdullah

Mechanical flexibility, low cost, and lightweight design are crucial elements for high demand electronic devices and has increased the application of flexible printed circuit board (FPCB). However, FPCB exhibits stress ...

Keywords: Electronic cooling, electronics, Flow, FPCB, Heat Capacity, Hot Disk, Thermal Conductivity, Transient plane source (TPS)

Comparison of thermal properties measured by different methods

Author(s): Ilmo Kukkonen, Jan Sundberg, Lars Hälldahl

In this paper, the thermal conductivity of rock samples was tested using three different methods: the Hot Disk transient plane source (TPS) method, the divided bar method, and calorimetric method. ...

Keywords: Calorimetric method, density, Heat Capacity, Hot Disk, Rock, Thermal Conductivity, Thermal Diffusivity, Transient Plane Source, Transient plane source (TPS) method

Thermal conductivity versus depth profiling of inhomogeneous materials using the hot disk technique

Author(s): Andrey Sizov, Arne Rosén, Daniel Cederkrantz, L. Jacobson, L. Salmi, Mattias Gustavsson, Silas E. Gustafsson

This research highlights the capabilities of transient measurements and hot disc sensors to estimate thermal conductivities of samples with large voids/variations in their compositions. Because of the lack of ...

Keywords: Computer modeling, depth profiling, Heat Capacity, homogenous materials, Hot Disk Transient Plane Source, Hot Disk transient plane source (TPS), inhomogenous materials, Materials analysis, Surface conductivity, Thermal Conductivity, TPS

Numerical simulation of heat and mass transport during hydration of Portland cement mortar in semi-adiabatic and steam curing conditions

Author(s): Dale P. Bentz, E. Hernandez-Bautista, P. F. de J. Cano-Barrita, S. Sandoval-Torres

A numerical model is developed to describe the thermal conductivity, hydration, and moisture content of Portland cement mortar specimens. In order to develop the model, the thermal conductivity and specific ...

Keywords: Cement, concrete, Heat Capacity, Hot Disk thermal constant analyser, Hot Disk thermal constant analyzer, Isothermal Calorimetry, Magnetic Resonance Imaging, Magnetic Resonance Imaging (MRI), MRI, NMR, Nuclear Magnetic Resonance, Nuclear magnetic resonance (NMR), Thermal Conductivity, X-Ray Fluorescence

Prediction of Effective Thermal Conductivity of Fluid Saturated Porous Media: in situ Thermo Physical Measurements

Author(s): Aurang Zeb

The thermal properties (thermal conductivity, thermal diffusivity, and specific heat) were measured for igneous and sedimentary rocks at room temperature and atmospheric pressure. The thermal properties of the igneous rocks, ...

Keywords: Heat Capacity, Igneous Rocks, Sedimentary Rocks, Thermal Conductivity, Thermal Diffusivity, TPS Technique, Transient Plane Source, Transient plane source (TPS) method

Engineering improvement of NaAlH4 system

Author(s): B. A. van Hassel, B. Laube, D. Mosher, J. Holowczak, J. M. Pasini, L. Pryor, M. Gorbounov, R. Brown, X. Tang

This article is based on research that has been done to improve hydrogen storage systems with on-board reversible metal hydrides. The study involved the compaction of the sodium aluminum hydride ...

Keywords: Biaxial Flexure Testing, differential scanning calorimeter, Differential scanning calorimeter (DSC), DSC, graphite, Heat Capacity, Hot Disk Thermal Constants Analyzer, Hydrogen Storage, Thermal Conductivity, TPS Method, Transient Plane Source, Transient plane source (TPS) method, X-ray Diffraction

Chemical Composition, Density, Specific Gravity, Apparent Porosity, and Thermal Transport Properties of Volcanic Rocks in the Temperature Range 253 to 333 K

Author(s): Asghari Maqsood, Iftikhar Hussain Gul, Muhammad Anis-ur-Rehman

The density related properties (specific gravity, density, apparent porosity), and thermal transport properties were determined for diorite and granite rocks taken from the Shewa-Shahbaz Garhi volcanic complex, Pakistan. All measurements ...

Keywords: Apparent Porosity, density, Heat Capacity, Specific Gravity, Thermal Conductivity, Thermal Diffusivity, TPS Technique, Transient Plane Source, Transient plane source (TPS) method, Volcanic Rocks, X-Ray Fluorescence Technique

Online monitoring of wax deposition in sub-sea pipelines

Author(s): L. Amundsen, R. Hoffmann, R. Schuller

The authors have performed a study to determine if heat pulse wax monitoring is capable of measuring the wax thickness build-up in an oil pipeline. A numerical model was developed ...

Keywords: density, Heat Capacity, Oil Flow, Sub-Sea Pipelines, Thermal Conductivity, Thermal Diffusivity, TPS Technique, Transient Plane Source, Transient plane source (TPS) method, viscosity, Water Flow

Thermal property prediction and measurement of organic phase change materials in the liquid phase near the melting point

Author(s): Aaron P. Wemhoff, Amy S. Fleischer, Rebecca Weigand, Ronald Warzoha, William E. O'Connor

In this work, the authors tested five organic phase change materials for thermophysical properties (density, heat capacity, and thermal conductivity) in order to determine the best path to prediction (BPP) ...

Keywords: density, differential scanning calorimetry, Differential scanning calorimetry (DSC), DSC, Heat Capacity, Latent Heat of Fusion, Melt Temperature, pcms, phase change materials, Thermal Conductivity, Thermal Constants Analyzer, TPS Technique, Transient Plane Source, Transient plane source (TPS) method

Keyword: Heat Capacity