Assembly and evaluation of a cooling tower for use in teaching undergraduate activities / Montagem e avaliação de uma torre de resfriamento para uso em atividades de ensino de graduação

AUTOR(ES)
DATA DE PUBLICAÇÃO

2009

RESUMO

This work describes proposal for complementing Process Systems Engineering (PSE) undergraduate learning. Traditional teaching of PSE is normally restricted to modeling and computer simulations, with very little contact with actual processes. We felt that applying theoretical concepts to practical problems would be very welcome by the students and improve their understanding of PSE. For this purpose we designed and built an experimental setup consisting of a process system (a heat exchanger) and a utility system (a cooling tower). A set of industrial-standard instrumentation was used for measuring process variables: flow, temperature, humidity and pressure drop sensors. All instruments are connected to an industrial data-logging device. The measured process parameters are sent from the datalogger to a computer using the MODBUS/RS485 standard, and displayed to the user as process flowsheets. The flowsheets and additional screens were developed using the industrial-standard supervisory control and data acquisition system InduSoft Web Studio v6.1. Data can be continuously monitored or stored in files for further off-line processing. Some tests were made on the cooling tower system to verify its behaviour and correct the problems found. In this work, it was also developed an empirical equation through which it is possible to calculate the air wet bulb temperature in a direct way. This is specially interesting in its continuous monitoring in a process

ASSUNTO(S)

sistemas de refrigeração processos quimicos chilling systems chemical engineering education chemical processes cooling tower modelagem e simulação torres de resfriamento modeling and simulation engenharia quimica - ensino

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