22nd IATP Meeting, June 23rd 2024
The meeting was opened by the Chairman, Prof. Sir William Wakeham, who welcomed all present and thanked Dr Richard Perkins and Dr Aaron Rowane, as the local organisers of the meeting, for the excellent arrangements.
The meeting was divided into the usual scientific session and business session. The proceedings are recorded here in that order.
2. SCIENTIFIC SESSION
2.1 Measurements of the Viscosity of Gas Mixtures Containing Hydrogen with a Modified Vibrating-Wire Viscometer
Ruben Harten, Karsten Meier (Germany)
2.2 Shadowgraph Method for the Determination of Diffusion Coefficients and Further Transport Properties
Patrick Schmidt, Wenchang Wu, Michael H. Rausch, Andreas P. Fröba (Germany)
2.3 Progress in Residual Entropy Scaling: Viscosity Predictions for Asymmetric Mixtures
Iusiph Eiubovi, J. P. Martin Trusler (UK)
2.4 Challenges in the Thermal Management of Electronic Devices
Carlos A. Nieto de Castro, Maria José V. Lourenço, Vânia Silvério (Portugal)
2.5 Evaluating Cubic Equations of State for Viscosity and Thermal Conductivity Calculation Based on the Residual Entropy Scaling Approach
Xiaoxian Yang, Markus Richter (Germany)
2.6 Low Temperature Thermal Energy Storage: Insights into Odd-Even n-Alkane Systems
Maria Carolina M. Sequeira, Bernardo A. Nogueira, Timur Nikitin, Fernando J.P. Caetano, Herminio P. Diogo, Joao M.N.A. Fareleira, Rui Fausto (Portugal)
2.7 Difficulties in Measuring the Thermal Conductivity of Molten Salts
Troy Munro, Jacob Numbers, Ryan Ruth, Peter Kasper, Brian Merritt (USA)
2.8 Quick Overview of the Applied Chemicals and Materials Division, NIST- Boulder
Marcia L. Huber (USA)
2.9 Recommendation for the Definitions and Preferred Symbols for the Mass Diffusion Coefficients in Non-Electrolyte and Electrolyte Systems
Tobias Klein, Chathura J. Kankanamge, Thomas M. Koller, Michael H. Rausch, Anderas P. Fröba (Friedrich-Alexander-Universität Erlangen-Nürnberg), Marc J. Assael (Aristotle University, Thessaloniki), William A. Wakeham (Imperial College London). Gabriela Guevara-Carrion, Jadran Vrabec (Technische Universität Berlin)
2.10 NIST/TRC Public Data Domain and New Tools to Access the Data
Vladimir Diky (USA)
2.11 A New Method of Measuring the Thermal Diffusivity of Solids.
William A. Wakeham (U.K.), Peter S. Gall, Zachary D. Withrow, Daniela S. Gaal (USA)
2.12 Investigation on Alkanes at Technische Thermodynamik Bremen
Bernd Rathke (Germany)
2.13 The Impact of Polymeric Architecture on High Pressure Viscosity and Resulting Correlative Parameters of a Lubricant Base Oil
Katrina Avery, Erdogan Kiran, Mark Devlin (USA)
2.14 Measurements of Intra-Diffusion Coefficients for Gaseous Binary Mixtures
Sam Kobeissi, Eric May, Nicholas Ling, Michael Johns (Australia)
Each presentation engendered discussion and a few points of special interest are noted here:
a) Measurements & Instruments:
- Ruben Harten described a modified VBW instrument for the measurement of the density and viscosity (273-498 K, and up to 30 MPa) of gas mixtures containing hydrogen in a range 273 to 498 K and up to 30 MPa pressure.
- Patrick Schmidt described the instrument and the theory of the shadowgraph method for the measurement of coefficients D11, a, and DT.
- Maria Carolina M. Sequeira described that to obtain accurate binary phase diagrams for systems like C10H22+C12H26 and C9H20+C11H24, she employed a) DSC results, b) Hot Stage Microscopy to identify the phase transitions, and c) Raman spectroscopy to identify the different phases in mixtures.
- Large disagreements in the thermal conductivity of LiF-NaF-KF were shown by Troy Munro. Consequently, his team developed a transient needle probe to measure the thermal conductivity of such salts, but they still have some issues. He also described a THW prototype in diamond wafer still with many problems to be solved.
- A new method for the measurement of the thermal diffusivity of solids was presented by William A. Wakeham. The new method is transient and uses a mild heat input from an LED light source to drive a temperature change. The theory takes into account the heat losses from all the surfaces of the sample and fits the experimental data very well. Values of the thermal diffusivity of Pyroceram were also presented
- Bernd Rathke presented phase diagrams of n-alkanes-acetonitrile and models. Results for n-C16H34+iso-C16H34 – ethanol phase diagrams were also presented.
- An Instrument to measure the density and viscosity of oils employed in car engines. Results for Ultra S4, up to 35 MPa, and the effects of adding small amounts of polymers, were presented by Katrina Avery.
- Finally, measurements of intradiffusion coefficients for CH4, CH4+H2, CH4+He, CH4+N2 mixtures were presented by Sam Kobeissi.
b) Theoretical:
- Iusiph Eiubovi presented a model of residual entropy based on the proposition by I. Bell, and showed that a universal approach with two parameters, work well for mixtures.
- The application of the residual entropy approach to correlate the viscosity and thermal conductivity of 150 fluids, was presented by Xiaoxian Yang.
c) Reference values/Correlations:
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d) Other:
- Carlos A. Nieto de Castro discussed cooling problems in chips of mobile phones, and proposed employing liquids to cool the processor in the phone.
- An interesting overview of the Applied Chemicals and Materials Division of NIST in Boulder, was given by Marcia L. Huber.
- A very detailed recommendation for the definitions and preferred symbols for the mass diffusion coefficients in non-electrolyte and electrolyte systems, was presented by Tobias Klein.
- Vladimir Diky presented the updated NIST/TRC public data domain, and the new tools available to access the data. The ThermoData Engine free public version can be found in https://data.nist.gov/od/id/mds2-3179.
3. BUSINESS SESSION
3.1. PROJECTS CONCLUDED
1. Recommendation for the Definitions and Preferred Symbols for the Mass Diffusion Coefficients in Non-Electrolyte and Electrolyte Systems
Tobias Klein, Chathura J. Kankanamge, Thomas M. Koller, Michael H. Rausch, Anderas P. Fröba (Friedrich-Alexander-Universität Erlangen-Nürnberg), Marc J. Assael (Aristotle University, Thessaloniki), William A. Wakeham (Imperial College London). Gabriela Guevara-Carrion, Jadran Vrabec (Technische Universität Berlin)
Following the detailed presentation by Tobias Klein (2.9), and a consequent discussion, it was decided that the project is concluded and it should be submitted for review to IUPAC.
3.2. PROJECTS CONTINUED
The following projects were discussed and it was agreed to continue them:
2. Reference correlations for the viscosity and thermal conductivity of fluids over extended temperature and pressure ranges.
M.J. Assael (Greece), M.L. Huber, R.A. Perkins (USA), F. Caetano, J.M.N.A. Fareleira (Portugal)
Project continues.
3. High-temperature high-pressure viscosity standards
J.M.N.A. Fareleira, F. Caetano (Portugal), W.A. Wakeham, J.P.M. Trusler (UK), A.P. Fröba, A. Lei¬pertz, B. Rathke (Germany), K. Harris (Australia), J. Fernandez (Spain), K. Schmidt (Canada), Chr. Boned (France)
Project continues. F. Caetano will prepare a paper summarizing all that has been done.
4. Thermal conductivity and enthalpy of fusion of n-alkanes as practical PCM
L. Fedele (Leader), S. Bobbo (Italy), M.J. Assael (Greece), W.A. Wakeham (U.K.), M.L. Huber, R. Perkins (USA), A.P. Fröba, T.M. Koller, K. Meier, B. Rathke, S.E. Quiñones-Cisneros (Germany), J.M.N.A. Fareleira, F.J.P. Caetano (Portugal), J. Fernandez (Spain), E. May (Australia), V. Shevtsova (Belgium), V. Diky (USA)
Project continues (V. Diky was added)
5. Further understanding of the operation of the torsional crystal viscometer
C.A. Nieto de Castor (Portugal), F.J.V. Santos (Portugal), W.A. Wakeham (UK)
Project continues.
6. Special Issue of the International Journal of Thermophysics titled “Transport Property Measurements in Research and Industry: Recommended Techniques and Instrumentation”
W.A. Wakeham (UK), M.J. Assael (Greece).
W.A. Wakeham and M.J. Assael as Guest Editors have invited about 20 authors (most present in the meeting) to contribute. Deadline for submission is the end of December 2024.
13 submitted (10 published, 1 accepted), 5 to be submitted
7. Transport of Hydrogen in Solids and Liquids
J.M.P. Trusler (UK), T.M. Koller, M.H. Rausch, A.P. Fröba, B. Rathke (Germany), F. Caetano, J.M.N.A. Fareleira (Portugal).
Project continues.
8. Apparent Thermal Conductivity of Nanofluids
J. Fernandez (Leader, Spain) L. Fedele (Italy), C.A. Nieto de Castro (Portugal), A.P. Fröba, M. Buchmann (Germany), M.J. Assael (Greece)
Project continues (M. Buchmann was added)
3.3. NEW COLLABORATIVE PROJECTS
9. Towards a definition of “ideal-solution” for transport properties.
C.A. Nieto de Castro (Portugal), Gabriela Guevara Carrion (Germany), +…. (Open for further participation)
10. On diffusion...
Andreas P. Fröba? (Germany)
11. On entropy scaling?
V. Diky (USA) expressed an interest to participate.
3.4. PROCEDURE FOR IATP ENDORSEMENT
Members were reminded that if they wish to have the endorsement of IATP for their work they should submit it to the Secretary in the first instance to arrange a rapid review. Referees who have agreed to participate in the review process in addition to the Executive Member are A.P. Fröba, J.M. Trusler, M.L. Huber and E. May.
4. MEMBERSHIP
Prof. M.J. Assael reminded everyone that all information about IATP activities, as well as the current list of members, can always be found at
https://ltpep.com/ -> I.A.T.P.
It was also decided that members who had not attended for some time, and where there was evidence that they would probably not have a continuing connection, would be removed form the list.
a)
- Professor Jan V. Sengers informed IATP of his decision to retire from the position of Executive Member of IATP.
- Professor Akira Nagashima informed IATP of his decision to retire as an Executive Member and to continue as a Member of IATP.
The contribution of both Members from the beginning of IATP (and STP), was gratefully acknowledged.
b) The following new members were approved as Executive Members:
-Dr Tara Fortin (U.S.A.)
-Prof J.P. Martin Trusler (U.K.)
c) The following were approved as Members:
-Dr Vladimir Diky (U.S.A)
-Dr Daniel Friend (U.S.A.)
-Dr Tobias Klein (Germany)
-Dr Aaron Rowane (U.S.A.)
-Dr Xiaoxian Yang (Germany)
5. FUTURE MEETINGS
5.1. 23rd IATP Meeting, 2025
The 23rd IATP Meeting will take place on Saturday July 5th, 2025, in Bremen, Germany, hosted by B. Rathke. Details will be announced in due course.
5.2. 24th IATP Meeting, 2026
The 24th IATP Meeting will take place on Sunday, June 21st, 2026, in the Campus Serge Kampf Les Fontaines, 40 km outside Paris prior to the ECTP 2026. Details will be announced in due course.
6. LIST OF ATTENDEES
List of people that attended the meeting:
1. Professor Sir William A. Wakeham (Chairman)
2. Professor Marc J. Assael (Secretary)
3. Dr Tara Fortin
4. Professor Andreas P. Fröba
5. Professor Carlos Nieto de Castro
6. Professor Jan V. Sengers
7. Professor J.P. Martin Trusler
8. Professor Matthias H. Buschmann
9. Dr Vladimir Diky
10. Dr Daniel G. Friend
11. Dr Gabriela Guevara-Carrion
12. Dr Robert Hellmann
13. Dr Marcia A. Huber
14. Dr Tobias Klein
15. Dr Thomas Manfred Koller
16. Professor Maria José V. Lourenço
17. Professor Eric May
18. Dr Richard A. Perkins
19. Dr Bernd Rathke
20. Dr Aaron Rowane
21. Dr Michael H. Rausch
22. Professor Markus Richter
23. Ms Maria Carolina Sequeira
24. Mr Rafael Marcal Almeida
25. Dr Katrina Avery
26. Dr Ala Bazyleva
27. Mr Francisco Bioucas
28. Mrs Lena Braun
29. Mr Iusiph Eiubovi
30. Mr Ruben Harten
31. Mr Julius Jander
32. Mr Chathura Jayan Kamkanamge
33. Mr Manuel Kerscher
34. Mr Sam Kobeissi
35. Professor Werner Köhler
36. Mr Riley V. Latcham
37. Dr Frances Lenahan
38. Dr Philipp Marienhagen
39. Dr Troy Munro
40. Ms Eleftheria Ntonti
41. Mr Patrick Schmidt
42. Ms Sofia Sotiriadou
43. Mr David Uko
44. Dr Fufang Yang
45. Mr Wenchang Wu
46. Mrs Ziwen Zhai
