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首页> 外文会议>International Symposium on Runaway Reactions, Pressure Relief Design and Effluent Handling American Institute of Chemical Engineers/American Chemical Society Management Conference >A Study of Student Experience and Feedback on Web Based and Simulation Based Practicals Developed for a Process Engineering Module within Biosystems Engineering
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A Study of Student Experience and Feedback on Web Based and Simulation Based Practicals Developed for a Process Engineering Module within Biosystems Engineering

机译：对生物系统工程中工艺工程模块开发的基于Web基于Web基于仿真实践的学生经验和反馈研究

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Practicals are a key component in the training of engineering students. They complement the theoretical content of lectures and bring to life the many technologies that engineers will encounter during their careers. Laboratory practicals are very resource intensive in equipment facilities, laboratory space, materials and time input by academics and technicians. As they are normally carried out in small groups, they can also present considerable timetabling difficulties. As a result, the number of practicals undertaken by students can be constrained by resources or timetabling limitations. One approach to overcome these constraints is to develop simulation software that is based on the equations underlying the principles of operation of the subject of interest. The software then allows the student to investigate various scenarios by varying different variables. Simulation can be a very powerful learning tool for engineers. However from the teaching perspective, simulation lacks the 'hands on' element that is a very important component of conventional practicals. Web based practicals offer a novel alternative as an intermediate step between conventional laboratory practicals and simulated practicals. The main advantage of a web based practical over simulation is that the student can see and carry out a practical in real time. Web based practicals also remove many of the resourcing constraints associated with conventional laboratory practicals. Web based practicals can be accessed at any time, so a student can carry out the practical after covering the subject material in lectures and can repeat the practical if the student wants to review the material. The objective of this work was to develop a number of simulation and web based practicals for use in a processing engineering course for undergraduate Biosystems engineering students. The objective of the web based practical was to demonstrate the flow rate / pressure characteristics of centrifugal pumps. There were two separate components to constructing the web based practical, a centrifugal pump rig and a web camera to broadcast the experiment continuously over the net. The pump rig consisted of a small centrifugal pump recycling water into a reservoir. The back pressure was varied stepwise using valving. Flow rate and pressure was displayed by instrumentation that can be easily read by the web camera. The rig was programmed to cycle continuously through a series of pressure / flow rate settings. Students, remotely viewing the rig over the net, manually record the pressure / flow rate results displayed by the web camera while also viewing the obvious change in flow from the pump returning to the reservoir. Students can subsequently plot the flow rate / pressure characteristics of the centrifugal pump. The simulation based practical simulated the temperature distribution in a simple heat exchanger and how this varied with flow rate. The practicals were designed to act as 'pre-practicals' for similar lab based practicals. It was hoped that the web and simulation based practicals would enhance the pedagogical outcome of practicals by allowing students to undertake practicals at their own pace and repeat the practical if necessary. It was anticipated that students would be better prepared by the time they carried out the lab based practicals. Student surveys indicated that the students considered the pre-practicals interesting and well worth doing. However, the survey indicated that the students considered that these type of pre-practicals should complement current laboratory based practicals rather than replace them.
机译：实用是工程学生培训的关键组成部分。他们补充了讲座的理论内容，并带来了生命，这是工程师在职业生涯中遇到的许多技术。实验室实践在学术界和技术人员的设备设施，实验室空间，材料和时间内都是非常资深的。因为它们通常以小组进行，但它们也可以呈现相当大的时间表困难。因此，学生所开展的实际的数量可能受到资源或时间表限制的限制。克服这些约束的一种方法是开发基于基于兴趣主题的操作原理的方程的仿真软件。然后，该软件允许学生通过改变不同的变量来调查各种方案。模拟可以是工程师的一个非常强大的学习工具。然而，从教学角度来看，模拟缺乏“手放在”元素中，这是传统实用的一个非常重要的组成部分。基于Web的实践提供了一种新颖的替代品，作为传统实验室实践和模拟实践之间的中间步骤。基于Web的实际模拟的主要优点是学生可以实时看到和执行实用。基于Web的实用还删除了与传统实验室实践相关的许多资源限制。可以随时访问基于Web的实用性，所以学生可以在讲座中覆盖主题材料后进行实用，如果学生想要查看材料，可以重复实际。这项工作的目的是开发许多基于仿真和基于Web的实际实际，用于本科生物系统工程学生的加工工程课程。基于Web的实用的目的是证明了离心泵的流量/压力特性。有两个单独的组件来构造基于网的实用，离心泵钻机和网络摄像机，以在网上连续地广播实验。泵装备由小离心泵回收水中的小离心泵融入储层。使用阀门逐步变化后压。通过仪器显示流量和压力，可以通过网络摄像头容易地读取。钻机被编程为连续通过一系列压力/流速设置循环。学生，远程在网上查看钻机，手动记录网络摄像头显示的压力/流速结果，同时还从泵返回储库的泵中查看流量的明显变化。学生随后可以绘制离心泵的流量/压力特性。基于仿真的实际模拟简单的热交换器中的温度分布及其流速变化。实用性旨在充当类似实验室的实用性的“预处理”。希望基于网和模拟的实践将通过允许学生以自己的步伐进行实际来提高实用的教学结果，并在必要时重复实际。预计学生将在进行实验室的实际情况时更好地编写。学生调查表明，学生认为普遍存在的有趣和值得做。然而，该调查表明，学生认为这些类型的预实际应该补充当前的实验室的实际实际，而不是更换它们。

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