What is it about?
In this paper, the Open Photoacoustic Cell (OPC) technique and Thermal Lens Spectrometry (TLS) are applied in order to determine a thermal parameter of great interest, the thermal diffusivity as a function of the water content in the Nafion® membranes.
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Why is it important?
Since the nafion membrane is used for Proton Exchange Membrane (PEM) fuel cells and water electrolyzes and as dryer and humidifier gases its important to know how the content the water affects the thermal diffusivity.
Perspectives
Through out monitoring the thickness of the hydrated film it was noticed a great amount of water absorbed in just a few minutes. In addition, the thermal diffusivity diminishes with the increase of humidification, meaning that the thermal properties of the Nafion® are affected when clustered regions is filled by absorbed water.
Professor Daniele T Dias
Federal University of Technology - Paraná
Read the Original
This page is a summary of: Open Photoacoustic Cell study of thermal diffusivity of Nafion® as a function of water content, Journal de Physique IV (Proceedings), June 2005, EDP Sciences,
DOI: 10.1051/jp4:2005125089.
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