Absolute vs Direct Thermal Conductivity

May 3, 2024

What is the difference between an absolute and direct (calibrated) measurement of thermal conductivity?

Thermal Conductance Calculator

July 7, 2022

For materials which are non-homogenous or anisotropic are described with a more real world dependent term as Thermal Conduction.

Thermal Conductivity & Thermal Resistance Calculator

June 24, 2022

Calculates thermal resistance of a material when its thickness and thermal conductivity are known or measured.

Chasing Rainbows

January 24, 2022

Thermal Conductivity Renaissance Man Part 7 by Ron Tye

Efim Litovsky

October 28, 2021

Towards the Unattainable Perfection

June 21, 2021

Thermal Conductivity Renaissance Man Part 6 by Ron Tye

Decisions! Decisions! Decisions!

March 16, 2021

Thermal Conductivity Renaissance Man Part 5 by Ron Tye

Last of the Summer wine

November 18, 2020

Thermal Conductivity Renaissance Man Part 4 by Ron Tye

The Transient Era

September 30, 2020

Thermal Conductivity Renaissance Man Part 3 by Ron Tye

Paper Database

September 29, 2020

Hundreds of thermal conductivity papers searchable by testing method, application or author.

Blog

The Thermal Conductivity Blog features the latest announcements, news, perspectives, and more.

The Golden Age

May 8, 2020

Thermal Conductivity Renaissance Man Part 2 by Ron Tye

Thermal Conductivity Renaissance Man

April 1, 2020

Addressing the measurement of thermal conductivity and related thermal transport properties by Ron Tye.

The Renaissance Man

March 24, 2020

Thermal Conductivity Renaissance Man Part 1 by Ron Tye

Top 10 Thermally Resistive Materials and Gases

November 6, 2019

Thermally Resistive Materials and Gases

We Measure Everything

September 10, 2019

We measure everything from Solids, liquids, fabrics, textile and more.

Famous Scientists and Thermal Conductivity

August 1, 2019

Famous Scientist and Thermal Conductivity

Rekindling an Antique Searle’s Bar Experiment

July 18, 2019

Determining the thermal conductivity with Searle’s bar experiment

Top 10 Thermally Conductive Materials

July 8, 2019

Top 10 Thermally Conductive Materials

Specific Heat Test Experiment

June 11, 2019

Specific heat test experiment using a 3 different simple set up.

Top 10 Most Visited Thermal Resources

June 4, 2019

Top 10 most visited thermal resources

Top 10 Low Thermal Conductivity Research Papers

May 31, 2019

Top 10 academic papers related to low thermal conductivity

Top Ten Resources

A collection of Top 10 resources, ideas, tools, etc for people interested in thermal conductivity.

Restoration of Antique Searle’s Bar

May 27, 2019

The overview of Searle’s Bar Experiment.

Specific Heat Capacity Test: The Method of Mixture

May 13, 2019

Instructions on how to build and operate your own specific heat capacity test for your sample material.

Thermal Conductivity – Resistance: Temperature

April 9, 2019

Effect Temperature has on thermal resistance.

Rule of Mixtures Calculator

January 30, 2019

The heat capacity of a mixture can be calculated using the rule of mixtures.

What is Thermal Conductivity?

November 26, 2018

An easy to understand explanation of Thermal Conductivity and its importance.

Andrzej Brzezinski

September 12, 2018

John Koenig

Gernot Pottlacher

Robert Zarr

David R. Salmon

William J. Parker

Daniel Flynn

Ralph Dinwiddie

Ulf Hammerschmidt

Hans Groot

Silas E. Gustafsson

Ludovit Kubicar

Peter Gaal

Tetsuya Baba

Kenneth E. Wilkes

William Wakeham

Didericus P.H. Hasselman

David W. Yarbrough

R. (ROY) Taylor

Jochen Fricke

Paul Wagner

Ared Cezairliyan

Russell U. Acton

Merrill L. Minges

Guy K. White

Robert Berman

C.Y. Ho

John P. Moore

Ronald P. Tye

Yeram S. Touloukian

Ray E. Taylor

Marek J. Laubitz

September 11, 2018

Charles F. Lucks

Paul G. Klemens

David L. McElroy

Thermal Conductivity Award

Recipients of the Thermal Conductivity Awards

Reginald W. Powell

Ared Cezairliyan

August 13, 2018

As the founding editor of the International Journal of Thermophysics, Dr. Ared Cezairliyan is an internationally acclaimed physicist in the field of high-temperature thermophysics. Born in Turkey, Cezairliyan established an early reputation as an outstanding student and attended Robert College in Istanbul, receiving a B.S. degree in mechanical engineering and demonstrating a keen interest in arts and philosophy.

Paul G. Klemens

August 10, 2018

As a condensed matter physicist and emeritus professor of physics, Paul G. Klemens was one of the top researchers on the theory of phonons. Born in Vienna, Klemens and his family fled to Australia shortly before World War II broke out, where he learned to speak English and was awarded a scholarship to the University of Sydney, earning his BS degree and his MS degree in physics.

Yeram S. Touloukian

Yeram Touloukian believed in the importance of high-quality research and was influential world-wide in the establishment of some of the best research facilities in thermophysical measurements. Born in Istanbul, Turkey, Touloukian earned his bachelor’s degree in mechanical engineering before moving to the United States to pursue his master’s degree and Ph.D.

Akira Nagashima

Dr. Akira Nagashima is known for his active role in the field of thermal conductivity. He is a member of several scientific committees, like international organizing committee of the European Conference on Thermophysical Properties.

Tetsuya Baba

Specializing in the standards and metrology of thin film thermophysical properties, Dr. Tetsuya Baba graduated from the University of Tokyo, earning a Doctor of Science degree in 1979. Baba currently works as the senior researcher of TherMAT and is an emeritus researcher at the National Institute of Advanced Industrial Science and Technology.

Silas E. Gustafsson

February 9, 2018

In 2014, he was the invited speaker at the Thermophysics Conference, where he presented his paper titled: Possible Ways of Measuring the Thermal Transport Properties of Anisotrophic Materials. Dr. Gustafsson was awarded the “ITCC Thermal Conductivity Award” at the 27th International Thermal Conductivity Conference in 2003.

Ludovit Kubicar

February 1, 2018

In 2000, he received the “INCHEBA 2000” award at the 32nd International Chemical Fair in Bratislava for his Thermophysical Transient Tester RT 1.02. The following year, Kubicar accepted the “Thermal Conductivity Award” at the 26th International Thermal Conductivity Conference and the 14th International Thermal Expansion Symposium in Cambridge, MA, for that same work.

Dr. Vlastimil Boháč

January 25, 2018

With a career spanning over 33 years, Boháč is the author and co-author of more than 60 published research papers, and co-authored the patents for the pulse method that measures thermophysical parameters.

Thermal Conductivity Pioneers

Read about the earliest and more recent pioneers in the field of thermal conductivity measurements.

Professor Sir William A. Wakeham FREng

January 16, 2018

With a lifelong career devoted to research and leadership, over 400 research items and 10,000 citations to his name, Wakeham is undoubtedly considered a founding father of modern thermal conductivity.

Professor Marc J. Assael Ficheme

January 12, 2018

With a career spanning over 35 years, Marc Assael has published more than 186 papers in international journals, 163 papers in conference proceedings, 29 chapters, and 9 books.

John C. Jaeger

January 11, 2018

As an author of many books, Jaeger collaborated with Horatio S. Carslaw on two: Conduction of heat in solids and Operational methods in applied mathematics. After the passing of Carslaw, Jaeger continued his research efforts on the theory of heat conduction, to further improve the Carslaw method.

Ronald P. Tye

Tye is an author and co-author of seven books, over 150 research papers, and has more than 700 citations. In 2005, Ronald P. Tye received the “ECTP Lifetime Award”, to honour his outstanding scientific research on thermophysical properties.

Dr. William J. Parker

Dr. William J. Parker received the highly acclaimed Thermal Conductivity Award for his dedicated work on the Laser Flash Method, which remains the most popular method of measuring the thermal diffusivity of solids.

Horatio. S. Carslaw

As lead writer and theory developer of the books: Conduction of heat in solids and Operational methods in applied mathematics, Carslaw contributed a “pure” sense to the pieces of work, while his partner, and previous student, John Conrad Jaeger contributed more of an “applied” sense.

Gustav R. Kirchhoff

It was Kirchhoff who proposed the equation that stated the difference in heat capacity between products and reactants, accounts for the variation of heat in a chemical reaction. In 1860, Kirchhoff helped lead Robert Bunsen to the discovery of two novel chemical elements; cesium and rubidium, thanks to his extraordinary knowledge of spectral analysis.

Anders J. Ångström

Ångström was awarded the Rumford medal from the Royal Society in 1872, for his work with spectrum analysis. More specifically, Ångström, deduced the theory that states a spark emits, not one, but two superposed spectra; one from the metal and the other from the gas.

Jean-Baptiste J. Fourier

Without Fourier’s contributions in mathematics and physics, scientists of today would not be where they are. Most notably, Fourier’s theory of heat flux, led to the discovery of global warming. As such, Fourier is regarded as one of the grandfathers of thermal conductivity.

Glossary

December 1, 2017

List of definitions of commonly used terms in thermal conductivity industry

Heating Water in a Balloon

October 3, 2017

Test and demonstrate the difference in thermal conductivity of air and water.

Materials Database

September 27, 2017

Over 1000 searchable materials, with corresponding thermal conductivity, thermal diffusivity, thermal effusivity, specific heat and density information.

Conduction Calculator

September 22, 2017

Simple calculator for determination of heat transfer between substances that are in direct contact with each other.

Thermal Simulation Software – Energy2D

August 1, 2017

Free simulation software suitable to academics, students, or anyone looking to have fun with heat transfer

Uncertainty of Calibration

July 24, 2017

The calculator determines the uncertainty of comparative thermal conductivity methods.

Thermal Resistance in Series Calculator

July 21, 2017

Convenient conversions between different units of Thermal Conductivity, Thermal Diffusivity, and Specific Heat.

Thermal Conductivity – Resistance: Surface Area

June 9, 2017

Effect surface area has on thermal resistance.

Thermal Conductivity Meter: Searle’s Apparatus

Instructions on how to build and operate your own thermal conductivity meter for materials with high thermal conductivity.

Thermal Conductivity Meter: Lee’s Disc

Instructions on how to build and operate your own thermal conductivity meter for materials with low thermal conductivity.

Build Your Own

Free instructions on how to build your own thermal conductivity meter.

Thermal Conductivity – Resistance: Length

Effect length has on thermal resistance.

Thermal Conductivity – Resistance: Materials

Effect thermal conductivity has on thermal resistance.

Qualitative testing of the Thermal Conductivity of liquids

Comparison of the Thermal Conductivity of various liquids using a simple set up.

Unburnable paper! The impressive effects of high thermal conductivity materials.

Make Paper flame-proof using only a metal rod.

Using Heat flux to determine the length of an aluminum rod of unknown length

Learn how to use heat flux and thermal conductivity to calculate length of a rod with unknown length.

Touch Metal, Touch Wood Experiment

Why does metal feel different than wood?

Ice Cutter Experiment with High Thermal Conductivity Graphite Sheet

Instantly cut ice with the amazing high thermal conductivity graphite sheets. Get your own free piece of graphite to run this experiment.

Thermal Conductivity Experiments

June 8, 2017

Easy thermal conductivity science experiments for all ages.

Thermal Conductivity of Graphite

Nicholas explains how to effectively cut a freezy in two using thermal conductivity!

Touch NASA foam at 1980°C

An explanation of why NASA uses special ceramic tiles to protect the space shuttle

Thermal Conductivity Explained by a 12 Year Old

Thermal conductivity definition explained by a 12 Year old scientist

Thermal Conductivity Adventures

Follow the exploits of some junior scientists as they discover thermal conductivity!

Thermal Properties Calculator

May 23, 2017

Simple calculator for determination of heat transfer between substances that are in direct contact with each other.

Calibrate & Test

May 19, 2017

Simulate testing of various absolute or calibrated methods.

Thermal Properties Converter

May 17, 2017

Convenient conversions between different units of Thermal Conductivity, Thermal Diffusivity, and Specific Heat.

Penetration Calculator

May 15, 2017

Easy to use calculator to determine how far the heat from your measurement sensor penetrates into your sample.

Absolute: LFA

Laser Flash Apparatus Simulate Absolute Testing

Absolute: TPS

Transient Plane Source Simulate Absolute Testing

Calibration: THW

Transient Hot Wire Calibrate & Test Simulation

Calibration: HFM

Heat Flow Meter Calibrate & Test Simulation

Calibration: TLS

Transient Line Source Calibrate & Test Simulation

Calibration: MTPS

Modified Transient Plane Source Calibrate & Test Simulation

Method Comparison

January 24, 2017

A convenient list to quickly compare specifications of 8 methods.