Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
239679 | Procedia Chemistry | 2009 | 4 Pages |
Abstract
In this contribution results of the non-steady state operation of a novel pressure stable thermoelectric flow sensor chip for the inline chemical process analysis in micro reactors are presented. The sensor chip consists of a heater in between two thermopiles on a novel perforated membrane, thus liquid flows on both sides. Compared to the conventional constant overtemperature/current operation the heater is now operated in non-steady state/pulsed mode and step responses of both thermopiles are evaluated. Based on our results the non-steady operation of the heater leads to a better discrimination between thermal conductivity and heat capacity of the liquid.
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