Yearbook 2013/2014 - ehedg

European Hygienic Engineering & Design Group
International Hygienic Study Award 2012
Happy awardees in Valencia
Dr. Peter Golz, VDMA, Frankfurt, Germany, phone: +49 69 6693-1656, e-mail: peter.golz@vdma.org
Prof. Dr. Jens-Peter Majschak, Technische Universität Dresden, Dresden, Germany,
phone: +49 (351) 463 3 4746, e-mail: jens-peter.majschak@tu-dresden.de
Since 2009, the communication and information platform
www.hygienic-processing.com and its partners have held a
competition for the annual Hygienic Study Award to honour
outstanding, innovative, high-quality diploma, bachelor and
master degree theses of studies in the field of hygienic
design. In 2012, the Hygienic Study Award expanded its
global reach to recognise and strengthen the network of
international institutions engaged in academic education and
research in the field of hygienic design. Fifteen renowned
research institutes and universities from eleven countries
were invited to partake in the competition. Seven abstracts
from five countries were submitted.
The European Hygienic Engineering & Design Group
(EHEDG) World Congress 2012 in Valencia, Spain, hosted
this year’s award ceremony where two first prizes and one
second prize were awarded to young research fellows from
Cambridge and Dresden. Hygienic Study Award 2012 was
sponsored jointly by EHEDG and VDMA.
Winner of 1st prize:
Hannes Stoye, University of Dresden
Development of a test set-up for pulsed spray cleaning
examinations
Abstract: As part of this work, one of the test rigs existing
at the Fraunhofer AVV was modified in such a way that
cleaning investigations could be carried out with pulsating
fluid jets on vertical plates of stainless steel. The control
unit enables it to vary two factors, pulsation frequency and
duty cycle. The detection of the cleaning process could be
ensured by use of a phosphorescent food model soil.
For the evaluation of the tests regarding cleaning time
and cleaned surface, a program was created that allows
comparison of different forms of falling liquid film and the
distinction between cleaning due to ‘direct impingement’
and cleaning due to falling liquid films. The verification of
the complex of experimental set-up, including experimental
evaluation, was based on measurements of coherent
distilled water jets from distilled water. Here, in case of
cleaning due to falling liquid films, the potential savings of
cleaning medium was 50% and in the case of cleaning due
to ‘direct impingement’ cost savings of up to 60% could be
realised. In addition, variation of the volume of flow was
performed with the aim of advancing a first user-friendly
approach to the establishment of the pulsating jet cleaning
supply.
(From left) Prof. Dr. Majschak of TU Dresden congratulates the
winners of the Hygienic Study Award 2012 first prizes: Dr. Patrick
Gordon, University of Cambridge, and Hannes Stoye, University of
Dresden, at the award ceremony on occasion of the EHEDG World
Congress 2012 in Valencia, Spain (Source: H.-W. Bellin).
Winner of 1st prize:
Dr. Patrick Gordon, University of Cambridge
Development of a scanning fluid dynamic gauge for
cleaning studies
Abstract: This thesis describes the development of a
scanning version of a fluid dynamic gauge (sFDG) to
study the cleaning of soft layers from rigid substrates,
such as the food soils encountered within an automatic
dishwasher. The sFDG measures the thickness of such