Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 404669
Title The effect of design parameters on temperature of a heated microsystem
Author(s) Swarts, J.W.; Janssen, A.E.M.; Boom, R.M.
Source Chemical Engineering Research & Design 89 (2011)3. - ISSN 0263-8762 - p. 310 - 317.
Department(s) Food Process Engineering
Publication type Refereed Article in a scientific journal
Publication year 2011
Keyword(s) total analysis systems - chip - amplification - reactors - gradient
Abstract This paper demonstrates the effect of microfluidic system design on temperature profiles of the whole system and more specifically of the microfluidics. Computational fluid dynamics models were used to estimate the effect of some parameters on the temperature of a microsystem with a relatively small heater. The system consisted of a Poly-Ether-Ether-Ketone (PEEK) chipholder with a heater, and a glass chip, surrounded by air. The material and design of the chipholder had a dominant effect on the temperature. Bringing the heater from 22 to 80 ° C resulted in a temperature gradient of over 40 ° C over the length of the chip at fluid level. Due to slow heating, quick switching of temperature is not possible. The steady state temperature profile at fluid level can be changed by adapting the geometry and material of the chipholder. By including the system’s thermal properties in microfluidic system design desired temperature profiles can be obtained. Computer models, such as described in this paper can be used to design a system which thermal behaviour matches the process requirements for the intended use
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