Loading...
Publication
Estudo do desempenho de uma torre de refrigeração industrial
| Name: | Description: | Size: | Format: | |
|---|---|---|---|---|
| 1.84 MB | Adobe PDF |
Advisor(s)
Abstract(s)
O presente trabalho foi realizado nas instalações industriais da ADP Fertilizantes, no âmbito
do estágio curricular referente ao Curso de Mestrado em Engenharia Biológica e Química. O
objetivo do estágio foi o estudo do Desempenho Térmico da Torre de Refrigeração do Tipo
Contracorrente.
O presente trabalho divide-se em duas fases, designadamente:
A primeira, a análise económica dos biocidas hipoclorito de sódio (NaClO), utilizado no ano
de 2018, e dióxido de cloro (ClO2), utilizado no ano de 2020 no tratamento da água de
refrigeração, com base nos dados fornecidos de consumos de produtos no tratamento de
água de refrigeração e, através dos quais foi possível verificar que o hipoclorito de sódio
apresenta um custo mais alto que um sistema misto à base de hipoclorito de sódio e dióxido
de cloro.
A segunda fase baseou-se no estudo do desempenho térmico da torre de refrigeração 5 (TR5)
de uma forma simplificada, comparando os dados fornecidos pela Empresa Esindus Portugal
- Soluções Técnicas Industriais, Unipessoal, Lda. e os dados obtidos.
Através de análises comparativas entre os dados do projecto e os dados coletados durante o
estudo, observou-se que a torre apresentou uma eficiencia térmica inferior à projectada. As
condições climatica mais quentes e húmidas de 2020 impactaram negativamente o
desempenho dos ventiladoes, resultando em um aumento no consumo eletrico dos
ventiladores (69,4A em 2020 e 67,8A em 2018). A capacidade de dissipação de calor foi
inferior ao esperado ( 6,2°C em 2020 e 10°C em 2018)
This internship was carried out at the ADP Fertilizantes industry as part of the curricular internship of the Master's degree in Biological and Chemical Engineering. The internship aimed to study the Thermal Performance of the Cooling Tower. This work was divided into two phases, the first phase being the economic analysis of the biocides sodium hypochlorite (NaClO), used in 2018, and chlorine dioxide (ClO2), used in 2020 in the treatment of cooling water, based on the data provided on consumption of products in the treatment of cooling water, through which it was possible to verify that sodium hypochlorite has a higher cost than a mixed system based on sodium hypochlorite and chlorine dioxide. The second phase was based on the study of the thermal performance of the TR5 cooling tower in a simplified way, comparing the data provided by the company Esindus Portugal - Soluções Técnicas Industriais, Unipessoal, Lda and the data obtained. Through comparative analyzes between project data and data collected during the study, it was observed that the tower presented a thermal efficiency lower than that designed. The hotter and more humid weather conditions of 2020 negatively impacted fan performance, resulting in an increase in fan electrical consumption (69.4A in 2020 and 67.8A in 2018). The heat dissipation capacity was lower than expected (6.2°C in 2020 and 10°C in 2018)
This internship was carried out at the ADP Fertilizantes industry as part of the curricular internship of the Master's degree in Biological and Chemical Engineering. The internship aimed to study the Thermal Performance of the Cooling Tower. This work was divided into two phases, the first phase being the economic analysis of the biocides sodium hypochlorite (NaClO), used in 2018, and chlorine dioxide (ClO2), used in 2020 in the treatment of cooling water, based on the data provided on consumption of products in the treatment of cooling water, through which it was possible to verify that sodium hypochlorite has a higher cost than a mixed system based on sodium hypochlorite and chlorine dioxide. The second phase was based on the study of the thermal performance of the TR5 cooling tower in a simplified way, comparing the data provided by the company Esindus Portugal - Soluções Técnicas Industriais, Unipessoal, Lda and the data obtained. Through comparative analyzes between project data and data collected during the study, it was observed that the tower presented a thermal efficiency lower than that designed. The hotter and more humid weather conditions of 2020 negatively impacted fan performance, resulting in an increase in fan electrical consumption (69.4A in 2020 and 67.8A in 2018). The heat dissipation capacity was lower than expected (6.2°C in 2020 and 10°C in 2018)