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Thursday, 26 November 2020
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Raw materials & technologies, Technologies

Work on thermal history paint awarded 2020 Warren M. Rohsenow Prize

Thursday, 12 November 2020

Thermal history paint is an enabling technology assisting in reducing carbon emissions.

Daniel Castillo applying the Thermal History Paint. Image source: SCS.

Daniel Castillo applying the Thermal History Paint. Image source: SCS.

This novel measurement technique provides detailed temperature maps across engine components and by doing so can help to optimise component designs for high efficient gas turbines. This in turn can reduce emissions and provide cost savings. Daniel Castillo received the Warren M. Rohsenow Prize from the Special Awards Committee of the ASME (American Society of Mechanical Engineers) in recognition of the best presentation at a technical session on heat transfer in gas turbine systems. Mr Castillo is Product Scientist at SCS based in Dagenham, London, and PhD Student at Imperial College London. 

The poster is entitled "Validation of a thermal history paint on a turbine blade in a hot gas test rig facility”. Current temperature measurement techniques in gas turbine components present some limitations measuring temperatures over the surface of complex shaped components. As stated by the Propulsion and Instrumentation Working Group (PIWG), 80% of the surface of blade airfoils in a gas turbine need temperature evaluation for a correct life monitoring and durability evaluation.

The Student Poster Competition is one of the major events during the ASME Turbo Expo, and this poster presented a validation of the new thermal mapping technology in realistic combustion conditions. An accurate temperature profile of a turbine vane was recorded with the use of SCS’s Thermal History Paint (THP). The THP had been applied to the surface of the component before it has been tested in a hot gas test bench for 45 minutes in the temperature range between 150 and 900°C.

Data sets were in goog alignment with each other

Post operation, the vane was scanned using two independent systems; a three-axis gantry system and an ABB robotic arm, both equipped with a SCS laser detection system. 900 individual temperature data points were generated across the entire vane and mapped onto a CAD drawing. The data was validated against thermocouple readings and FEM predictions. All three data sets were in very good alignment with each other, showing average variations below 4°C. This test shows that Sensor Coating Systems’ novel thermal history technology can be used as an advanced temperature mapping tool for engine designers.

To be eligible to present a poster, the presenting author must have completed the research presented on the poster while seeking a degree at a university. This year, Daniel Castillo, has been awarded the M. Rohsenow Prize at the ASME Turbo Expo 2020 meeting. The prize was awarded for the best technical presentation on heat transfer in gas turbine systems and will include a plaque and USD 100 prize. The project has been done in collaboration with Sensor Coating Systems (SCS) (lead), MAN Energy Solutions, Imperial College London and RWTH Aachen University.

More on functional coatings

More similar topics will be discussed at the online event EC Technology Webforum | Functional Coatings at 9-10 December 2020. Leading international experts will share the latest findings and innovations on functional coatings. Attendees will also have the opportunity to interact with them and each other during the web conference.

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