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CEED Project Abstracts 1997-1998

Department of Chemistry

Odour Removal in the Production of Superphosphate

Department of Computer Science

Heat Exchanger Network Synthesis using Simulated Annealing

Using Metadata to Catalogue Datasets

Using ODBC to Provide Heterogenous Distributed Database Support for Graphical Clients

Department of Mechanical & Materials Engineering

Industrial Risks and Effectiveness of Electrical Safety Devices

Prediction of Ore Flow in Material Transfer Chutes

Model of Tesla Turbine

Modelling of an Electro-Hydraulic Servo System

Corrosion Control of Sea Water Cooled Heat Exchangers

Abstracts

Odour Removal in the Production of Superphosphate
Sally Marsh
Department of Chemistry
Wesfarmers CSBP

Wesfarmers CSBP Limited produces superphosphate at its works in Kwinana, Bunbury, Esperance, Albany and Geraldton. Gases generated in the manufacturing process are scrubbed in a multi-stage scrubber. Practically all the fluorine compounds are removed, but minute concentrations of odorous organic sulfides escape the scrubbing process. The resulting odour has generated concern from the plants’ neighbours. CSBP is actively investigating means of reducing odours from the process and has commissioned UWA, through the CEED program, to assist. The aim of this project is to assess the feasibility and improve the efficiency of the odour scrubbing technique being trialed at the Bunbury operations. To do this, analytical procedures have been developed for the analysis of volatile sulfur compounds. The procedures use gas chromatography with a thermal desorption inlet or split splitless inlet and a flame ionisation or mass selective detector.

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Heat Exchanger Network Synthesis using Simulated Annealing
Andrew Evers
Department of Computer Science
Clough Engineering

Simulated Annealing is used in conjunction with a novel heat propagation algorithm to synthesize close to optimal heat exchanger networks. The algorithm is tested against the 4 stream system proposed by Linnoff et.al in “ A User Guide On Process Integration for the Efficient use of Energy” (The Institute of Chemical Engineering, UK, 1982). The new algorithm is shown to produce results that are comparable to, and better than those previously published for this problem. The algorithm uses Simulated Annealing to oversee a non-deterministic heat propagation method based on some of the concepts used in the later stages of pinch design. The flexibility of the algorithm is shown by its treatment of stream splitting, non-isothermal mixing, piecewise linear heat curves, multiple utilities and retrofitting.

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Using Metadata to Catalogue Datasets
Hannah Maher
Department of Computer Science
Main Roads Western Australia

Enabling the reuse of spatial datasets is an important requirement in an increasingly technological society. This is particularly relevant as the collection is an expensive exercise. Several metadata guidelines have been defined to catalogue datasets in a consistent fashion. This project sought to extend these guidelines and implement a prototype directory. The derived guidelines and key issues examined throughout the project are presented.

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Using ODBC to Provide Heterogenous Distributed Database Support for Graphical Clients
Andrew Nilsson
Department of Computer Science
CCK Treasury Systems

The widespread use of computer networks, distributed heterogeneous databases, and the client server paradigm means that there now exists a need to be able to connect and retrieve data from many, possibly remote, databases. The adoption of standards such as SQL and ODBC has simplified this task, however a number of problems still exist in such an environment. This paper describes some of the problems encountered during the addition of support for ODBC to an existing client application that utilises a graphical user interface for the construction of queries.

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Industrial Risks and Effectiveness of Electrical Safety Devices
Kin Keong Chor
Department of Mechanical & Materials Engineering
Office of Energy

Electrical safety is often taken for granted by many users. However, most users do not realise that electricity does not have to be at high voltage to kill. The primary objective of this paper is to investigate the potential impact of Residual Current Devices (RCDs) on electrical accidents by analysing a past accident database from 1990 to 1997. A secondary objective is to identify the attitude of the general population towards the safe use of electrical appliances. This paper presents the findings of the research conducted.

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Prediction of Ore Flow in Material Transfer Chutes
Jeremy Goodchild
Department of Mechanical and Materials Engineering
Sinclair Knight Merz

This paper outlines the common problems associated with transfer chutes used specifically in the iron-ore handling industry. A computer model that will give an approximation to the trajectory of ore in a specified transfer chute is proposed. The model is devised on a spreadsheet and predicts the ore path for an in-line and 90degree chute configuration arrangement. The computer model, along with qualitative experimental physical scale modelling, improves understanding of ore flow in transfer chutes and exposes solutions to common chute pitfalls.

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Model of Tesla Turbine
Brett Manners
Department of Mechanical and Materials Engineering
Sinclair Knight Merz

A Tesla turbine is a different type of turbine that extracts power from the working fluid by using the frictional shear forces in the fluid flow as it passes through the turbine. The aim of this project is to develop a mathematical model of a Tesla turbine that can be used to predict the performance of an actual turbine. In order to identify what makes a good Tesla turbine the model will then be used to investigate how the turbine parameters, such as rotor radius, effect the overall performance of the turbine.

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Modelling of an Electro-Hydraulic Servo System
Michael Shea
Department of Mechanical and Materials Engineering
Austal Ships

The modelling of hydraulic servo systems has been carried out extensively over the last thirty years with the aim of optimising response and improving control. However, traditionally many of these models applied linear techniques and inflexible combinations of system parameters in the quest to approximate response. This paper describes the modelling of a hydraulic servo system utilising power bond graph techniques and graphical computer software. Such techniques enable the full transient behaviour of the system to be simulated while also providing an attractive development environment for future refinement of the system. The model is developed with due consideration to the wider objectives of the ride control redevelopment program being undertaken at Austal Ships.

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Corrosion Control of Sea Water Cooled Heat Exchangers
Russell Vallis
Department of Mechanical and Materials Engineering
BP Refinery Kwinana

BP Refinery Kwinana relies heavily on the use of seawater from Cockburn Sound to meet its cooling requirements. Associated with the use of seawater cooling systems is the disadvantage of high maintenance costs and downtime losses due to corrosion problems. Currently the strategy in place relies on the use of both cathodic protection by zinc sacrificial anodes and epoxy based coating systems. This project has involved the evaluation of a wide range of corrosion resistant coatings, including several polymer-based coatings, metal sprayed coatings, and a plasma sprayed ceramic coating. In addition, an experimental assessment of the performance of aluminium as an anode material, as compared to zinc, was conducted with the view to changing the preferred anode material from zinc to aluminium.

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