Intro design

Intro design - Introduction to Design of Experiments...

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troduction to Design of Experiments Professional engineers are very frequently responsible for Introduction to Design of Experiments devising experiments to answer practical problems. There are well-tried methods for planning experiments that will provide the maximum reliable information. Several different factors may be present and may affect the results of experiments that are not readily controlled. “Interfering factors” affect the results but are not of prime interest. Also, the different factors may likely interact with each other in the sense that a higher value of one factor makes the results either more or less sensitive to another ctor factor.
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Experimentation vs. Use of Routine Operating Data Routine production data often provides useful clues to desirable changes in operation conditions. However, these clues are often ambiguous due to multiple governing factors changing simultaneously in an unplanned pattern. For example: the composition of crude oil fed to a refinery changes with increases and decreases of rates of flow from individual wells. In this case, an appreciable amount of time is required before steady, reliable data are obtained, during which time, further changes may occur. An alternative, is to use: Planned Experiments
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cale of Experimentation Experiments should be done on as small a scale as will provide the Scale of Experimentation necessary data. Managers in charge of full-scale industrial production units are often reluctant to allow experimentation concerning operating conditions their units due to possible negative affects on products These in their units due to possible negative affects on products. These managers may be more agreeable to experimentation if a technique such as EVOP is used. EVOP is a series of small planned changes in operating conditions known as evolutionary operation . The changes in each step are small enough that serious consequences are avoided and the results are evaluated after each step in order to decide the most logical next step. xperimentation can also be conducted on a laboratory scale at a Experimentation can also be conducted on a laboratory scale at a very modest cost, or through the use of a pilot plant which has similar characteristics to the full scale plant but is considerably smaller.
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One-factor-at-a-time vs.
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Intro design - Introduction to Design of Experiments...

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