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MATERIAL & ENERGY BALANCES MULTIMEDIA MODULES FOR MACINTOSH AND WINDOWS 95/NT Susan Montgomery University of Michigan, Chemical Engineering Department Multimedia Education Laboratory
We have developed a set of multimedia computer modules to help students in the introductory chemical engineering balances course understand and practice the key concepts of the course. Modules are divided into two categories, as shown in Table 1, and include modules that allow students to solve material balance problems in three different applications, and modules that provide practice using charts and used to solve material and energy balance problems. These modules are described in more detail below. Material Balance Problems ° Biological systems ° Car pre-painting system ° Wastewater treatment plant
Chart Tutorials ° Pxy & Txy diagrams ° Psychrometric charts ° Enthalpy-concentration diagrams Biological Systems This module helps students in the introductory chemical engineering course understand and practice the application of material balances to biological systems of different dimensions using an algorithm for the solution of material balance problems. In-depth interactions focus on mass balance problems involving cell metabolism, an artificial kidney, and a cheese factory. Car Pre-Painting System This multimedia tour can be used as part of an open-ended project for a material balance course, in which students create a flowsheet for the phosphate coating system at Ford Motor Companys Wixom, MI plant, then suggest modifications for waste minimization. Wastewater Treatment Plant This module introduces students to the applications of material balances in wastewater treatment processes. After reviewing the basics of wastewater treatment, students can take a tour of the Ann Arbor Wastewater Treatment Plant. A quiz includes material balance questions corresponding to each section of the plant. Pxy and Txy Diagrams This interactive module helps students understand the use of Pxy and Txy diagrams in describing binary liquid-vapor systems. The module also includes a review, introduction to industrial uses, and three quizzes to evaluate their understanding of the diagrams and their use. Psychrometric Charts Using this module, students learn how to read and use psychrometric charts, and are exposed to industrial applications in which they are used. Three quizzes help students evaluate whether they understand the components of the chart, how to locate a point on the chart, and how to follow a process using the chart. Enthalpy-concentration diagrams This module helps students review how to read and use enthalpy-concentration diagrams, and explore applications in which enthalpy concentration diagrams are used. A quiz helps students determine if they understand the components of the diagram, how to locate a point on the diagram, and how to follow a process using the diagram to solve material and energy balance problems. This CD will contain both Macintosh and Windows versions of the materials, for only $25. The modules may be installed on a computer network, for student access. For more information about these modules, see the Multimedia Education Laboratory's web page at http://www.engin.umich.edu/labs/mel
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