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Heat Exchange and Durability Performance of Novel Coatings

Maximizing the performance of heat exchangers is critical for the efficient use of geothermal energy in power production

Event Information:

Maximizing the performance of heat exchangers is critical for the efficient use of geothermal energy in power production. The ability to enhance heat transfer while maintaining resistance to scaling and corrosion is of utmost importance. In order to assess potential performance enhancements, an experimental setup was utilized to evaluate material samples with varying surface coatings, which mimicked heat exchanger surfaces.

To assess the heat transfer performance of different coatings and classify their potential for improvement, measurements of temperatures and flow were taken. Additionally, a thorough analysis of the sample surfaces was conducted to determine their resistance to corrosion and evaluate their effectiveness in protecting heat exchanger materials under actual industrial conditions. The experimental trials involved a comparison of samples with stainless steel or carbon steel substrates, utilizing several types of surface coatings.

Our Guest Speaker:

1. Sigrun Nanna Karlsdottir

Professor in Mechanical Engineering

The University of Iceland

Sigrun Nanna Karlsdottir is a Mechanical Engineering Professor at the University of Iceland, with a Ph.D. in Materials Science and Engineering from the University of Michigan. Her research focuses on material performance in geothermal environments, particularly corrosion and scaling. She has published over 40 papers, received research grants, and consulted energy companies in Iceland. She is the co-founder and COB of Gerosion Ltd, a consulting and R&D company, and a board member of the Geothermal Association of Iceland. Dr Karlsdottir also chaired the symposium on Geothermal Scaling and Corrosion at the annual conference CORROSION in 2017 and 2018.

2. Halldór Pálsson


University of Iceland

Halldór Pálsson holds a CS degree in Mechanical Engineering from the University of Iceland, and an M.Sc. and Ph.D. from the Technical University of Denmark. His research interests are in geothermal energy utilization, fluid mechanics, biomechanics, and mathematical modeling. Halldór worked on a research project involving mathematical modeling of high-energy electric arc FeSi production, before joining the University of Iceland as an Associate Professor in 2005. He was promoted to full professor in 2016.

About GeoHex Project

The GeoHex project consortium is hosting an upcoming webinar to present the results of their latest work on heat exchanger performance.

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