About Us
We are a start-up located in Trondheim, Norway. The goal of ThermoPhys is to make recent advances and developments from research on CCS, hydrogen and ammonia accessible and useful to the industry and accelerate the green transition.
Mission & Vision
ThermoPhys was founded with a clear purpose: to make advanced thermophysical models accessible to both research and industry. Our goal is to improve safety and efficiency in processes that handle complex mixtures and carbon storage. We envision a future where technology and science work seamlessly together, and where accurate models support smarter decisions and greener solutions. At ThermoPhys, our work goes beyond coding and calculations, it’s about building trust in the data and insights our tools provide, and making complex processes understandable and reliable for those who rely on them every day.
ThermoPhys enables integrated analysis of hydrogen systems by combining accurate thermo-physical modeling with energy efficiency and safety evaluation. This supports informed engineering decisions related to compression, liquefaction, transport, and storage, where efficiency, safety, and operability are tightly coupled.
Company Background
ThermoPhys was founded with a clear purpose: to make advanced thermophysical models accessible to both research and industry. Our goal is to improve safety and efficiency in processes that handle complex mixtures and carbon storage. We envision a future where technology and science work seamlessly together, and where accurate models support smarter decisions and greener solutions. At ThermoPhys, our work goes beyond coding and calculations, it’s about building trust in the data and insights our tools provide, and making complex processes understandable and reliable for those who rely on them every day.


Scientific & Technical Roots
We build on a strong foundation of scientific research. Our models and tools are built on decades of work in thermodynamics, phase behavior, and transport phenomena. Several team members come from NTNU and SINTEF, where they have contributed to open research codes and industrial simulation software like OLGA. This gives us unique insight into how theoretical models can be applied in real-world processes. Our approach combines rigorous scientific calculations with modern software development, ensuring that both researchers and engineers can rely on the results. Science underpins everything we do, but the goal is always to make it practical, understandable, and usable in real-world operations.
Meet the ThermoPhys team

Dr. Øivind Wilhelmsen
Chief Executive Officer (CEO)
Dr. Øivind Wilhelmsen is the Chief Executive Officer of ThermoPhys. He has won several national and international research awards, co-authored more than 100 scientific articles and two text books on thermodynamics and hydrogen technology. He also works as Professor at NTNU, where he chairs the thermodynamics group.

Dr. Morten Hammer
Chief Technology Officer (CTO)
Dr. Morten Hammer leads the technology development at ThermoPhys. He is an adjunct professor at NTNU and lead developer of ThermoTools since 2011. With a background from SINTEF Energy and development of the OLGA flow assurance software, he has extensive experience in thermodynamics, process engineering, and CCS.

Liv-Turid Nergård
Product Developer and Senior Process Engineer
Product Developer and Senior Process Engineer. Decades of experience with the legacy software.

Dr. Ailo Aasen
Chief Developer
Chief Developer in ThermoPhys. He placed top five in the Norwegian Mathematics and Physics Olympiads (2009), received the Stubban prize for “promising young mathematicians” at NTNU (2014), and earned the EFCE Excellence Award in Thermodynamics and Transport Properties (2021) for his PhD. Ailo has a decade of experience as a research scientist in SINTEF Energy, solving challenges in CCS, ammonia and hydrogen technologies.

Dr. Karl Yngve Lervåg
Senior Fullstack Developer
Senior Fullstack Developer at ThermoPhys (from November 2025). Former researcher and IT infrastructure lead at SINTEF, and backend developer and tech lead at the Norwegian Agency for Shared Services in Education and Research. Uniquely qualified to deliver reliable, secure, and efficient software solutions that bring ThermoPhys’ cutting-edge technology to users.

Vegard Jervell
Developer
Vegard Jervell is a Developer at ThermoPhys, specializing in the programming of complex numerical algorithms and modeling of transport properties, including viscosity, thermal conductivity, and diffusion coefficients. His expertise focuses on hydrogen and carbon dioxide-rich systems. Vegard is also the lead developer of the Kinetic Gas Repository on GitHub.
