Case-based reasoning in selection of centrifugal pump

Pao Yue-kong Library Electronic Theses Database

Case-based reasoning in selection of centrifugal pump

 

Author: Ng, Yin-ngai
Title: Case-based reasoning in selection of centrifugal pump
Degree: M.Sc.
Year: 1999
Subject: Centrifugal pumps
Case-based reasoning
Hong Kong Polytechnic University -- Dissertations
Department: Multi-disciplinary Studies
Dept. of Mechanical Engineering
Pages: 114, [94] leaves : ill. (some col.) ; 31 cm
Language: English
InnoPac Record: http://library.polyu.edu.hk/record=b1479176
URI: http://theses.lib.polyu.edu.hk/handle/200/3725
Abstract: An engineer employed in the process industries and faced with responsibilities for the specification, selection and purchase of process equipment has a daunting task. If for any reason the equipment that he/she selects fails to meet the requirements of the plant or process, the maximum claim in law against the equipment supplier is for the price paid for the equipment. In contrast the real cost of plant downtime and lost production is likely to exceed the equipment price manifold. Thus the normal rule for the relationship between purchaser and seller should applies in this particularly critical sphere of activity. Most engineers given this responsibility learn from their own experience, however limited, as they progress from one job or task to another. In larger organizations such as the oil companies, larger chemical companies and public sector bodies such as steel, gas and electricity, individual engineers or groups of engineers specialize and, over a period of time, codify their collective experience in the form of in-house specifications or design guides. Others, less fortunate perhaps, place themselves almost entirely in the hands of suppliers or plant contractors. There are many software that can carries out the pump selection process. But seldom has learning paradigm. Case based reasoning ("CBR"), one uses memory of relevant "past" cases to interpret or to solve a new problem case. Rather than creating a solution from scratch, a reasoner using case-based reasoning recalls cases similar to its current problem situation and solves or interprets problem by reasoning with past solution and interpretations. A reasoner using case-based reasoning can derive shortcuts and anticipate problems in new situations that might arise by having previously spotted and dealt with them. This can lead to improvement in the quality and efficiency of the reasoning. Pump selection is a very time consuming process. When integrated with case base reasoning, we can development a more efficient methodology to perform this task.

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