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Investigation of a novel condition monitoring approach, combining artificial neural network (ANN) with a sequential analysis technique, has been reported in this paper. For this purpose operational data from a Siemens SGT600 gas turbine has been employed for the training of an ANN model. This ANN model is subsequently used for the prediction of performance parameters of the gas turbine. Simulated
A new hybrid ventilation system for low energy buildings has been investigated theoretically using TRNSYS. The system is based on natural ventilation but utilizes a fan during hours when the natural driving forces are not sufficient. Heat from the exhaust air is recovered in an air-to-water heat exchanger. The heated water is pumped to the incoming ventilation air where it is heat exchanged to pre
The research described in this thesis has an interdisciplinary approach dealing with chemical, biological, and technical issues. One objective was to interface miniaturized liquid chromatography (LC) to mass spectrometry, i.e. MALDI-TOF MS and ESI-MS, in an unattended mode for high sensitivity determination of proteins and peptides. The coupling between capillary LC and MALDI was accomplished by e
Common practice in industry is to rotate the milling cutter in only one direction even though the geometry of the inserts are thus that they could be used again while the milling cutter is rotating in the opposite direction. The aim of this study was to investigate to what extent it is possible to increase the tool utilization during milling by first rotating the milling cutter in one direction un
One significant environmental impact from assembly operations includes packaging material use and subsequent waste generation. Although current practice involves reduction of unnecessary materials handling, there is potential to adapt packaging material in order to simultaneously improve the environmental performance and reduce cost in a “lean and green” mindset. Hence, with increased emphasis on
A method is described for identifying simultaneous signals from different transmit antennas in multi-antenna sounders. Multiple orthogonal signals are produced from one pseudorandom code by using it to modulate RF carriers at pre-calculated offset frequencies. Although their frequency spectra are interleaved, the spectral lines from different transmitters are separable by Fourier transform at the
A virtual reality (VR) experiment with 96 participants was carried out to provide recommendations on the design of flashing lights on emergency exit portals for road tunnel emergency evacuation. The experiment was carried out in a Cave Automatic Virtual Environment (CAVE) laboratory at Lund University. A set of variables has been investigated, namely 1) Colour of flashing lights, 2) Flashing rate,
En skola för alla – är ett uttryck som beskriver en politisk ambition att skapa en för alla elever likvärdig grundskola i Sverige. Som verklighetsbeskrivning har uttrycket emellertid sina begränsningar och det är just det som utgör bakgrund till föreliggande text. En skola för alla har vi kanske främst om man väljer att fokusera på olika strukturella förhållanden: skolan är obligatorisk för alla u
Introduction During the embodiment design and detail design phase, the designer has at his disposal a set of tools and techniques that him or her through the synthesis activity: basic rules, guidelines and principles (see [1]), but in the literature there are general design processes that help the designer to organize their work (e.g. [1]), but not at a very operational level. From a previous stud
