Beta 1


Title Designmanual for gradientfryser v.2.x
Author Bøggild, Henrik (Ingeniørhøjskolen i København, IHK)
Supervisor Schreiber, Mads Peter (Ingeniørhøjskolen i København, IHK)
Institution Ingeniørhøjskolen i København, IHK, DK-2750 Ballerup, Denmark
Thesis level Bachelor thesis
Education Diplomingeniør, Maskiningeniør
Education Bachelor of Mechanical Engineering
Publication date 2013-12
Abstract When you conserve blood samples, the best result is achieved when you expose the sample to a freeze process in a machine called a gradient freezer. By use of intelligent electronic and mechanic equipment the samples can be immersed and cooled in a nitrogen tank. The cooling process must be executed in a controlled manner following a specific time/temperature curve in order to get the best results.
This work is about the creation of a mobile gradient freezer v.2.0 where the first part will focus on the calculations of a time delay in temperature equilibrium seen from a reference point to the actual blood sample. The influence of time delays and methods to decrease the equilibrium time during the liquid stage, the phase change and the solid stage will be discussed as the size of the delays directly influence how the dynamic system must behave throughout time.
The second part is a study on the microcontroller Arduino UNO. This study will look at the possibilities and limitations the controller has to offer in relation to a new gradient freezer.
The intention of this work is to serve as an easy to understand design manual, where a mixture of “need to know” and “nice to know” observations will be presented with the objective of establishing a new and successful gradient freezer.
Pages 49
External partner Ledere og medarbejdere i offentlige institutioner
Fulltext
Dokument Projekt_fryser_DONE.pdf (2.70 MB)
Admin Creation date: 2014-01-02    Update date: 2014-01-10    Source: ihk    ID: ihk-22077713    Original MXD