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Estudo da recuperação de acetonitrila proveniente de um laboratório de análises em bebidas
(2023-08-30)
In order to obtain an ecologically correct cycle for acetonitrile, recovery of the solvent is sought as an alternative to the usual treatment through incineration. Acetonitrile is obtained primarily through the production ...
Análise do impacto dos veículos elétricos no sistema elétrico interligado nacional
(2023-12-06)
The use of fossil fuels, such as gasoline, has been causing negative environmental impacts due to the emission of polluting gases, such as CO2, which is one of the main causes of climate change, manifesting as the greenhouse ...
Drive sensorless para motores de corrente contínua sem escovas de baixo custo para compressores de geladeira automotiva
(2023-12-09)
This work presents the development of a low-cost sensorless drive system for Brushless DC motors used in automotive refrigerator compressors. For its correct operation, the controller features both a discrete position ...
Aplicação de sistema de refrigeração por absorção em veículos a diesel
(2023-12-15)
The burning of fossil fuels has driven the world economy since the first industrial revolution, which has led humanity to reach its technological peak today. However, unlimited exploitation causes severe damage to nature ...
Avaliação do desempenho acústico de argamassas de contrapiso com substituição do agregado miúdo natural por agregado miúdo de resíduos cerâmicos
(2023-12-15)
The reuse of ceramic waste as fine aggregate in mortars has proved to be a promising practice in the field of civil construction, especially with regard to improving the acoustic performance of subfloors. The use of ceramic ...