Use of stainless-steel tubes to replace the usual copper tubes in flat plate solar collectors in the Brazilian solar termal market: overview and impact on energy efficiency

Abstract: Flat plate solar collectors (FPSC) should meet durability requirements which are related to the equipment ability to resist aging and damage occurring during lifetime. To face durability issues, especially concerning to freezing and corrosion resistance, Brazilian flat plate solar thermal collector manufactures are embracing product lines with stainless-steel (SS) Leia mais…

Vibration measurement technique by structured light visibility analysis

Abstract: Optical methods of vibration evaluation comprise a very powerful tool in areas such as quality control and predictive maintenance. We propose and experimentally demonstrate a technique for out-of-plane, whole-field vibration analysis by studying the visibility decrease of projected structured light on vibrating surfaces. The light pattern formed by straight, Leia mais…

Considerações sobre os parâmetros físico-qumicos da água na bacia de drenagem do reservatório Paiva Castro, Rio Juqueri, Mariporã, SP

Resumo: O presente trabalho consta das considerações sobre os parâmetros físico-químicos da água na bacia de drenagem do Reservatório Paiva Castro, rio Juqueri, Mairiporã, SP, utilizados para o monitoramento e acompanhamento da evolução da qualidade da água na Bacia hidrográfica do Reservatório Paiva Castro, com base na resolução CONAMA nº Leia mais…

Predicitng calcium carbonate scaling in tubular reaztors: a thermodynamic and kinetic model with experimental data validation

Abstract: This paper presents a thermodynamic and kinetic model for simulating calcium carbonate scaling in a tubularreactor under varying saline composition, temperature, and flow rate. Simulation results are compared withexperimental data obtained from a tubular reactor developed by the IPT and Petrobras. A mathematicalmodel based on thermodynamics and crystallization kinetics Leia mais…

High- resolution site characterization tools: application of fluorescence techniques to identify DNAPL in tropical lands

Abstract: When oil spills occur, a fraction of the oil may get trapped in soil pores or can migrate through unsaturated and saturated zones. Dense non-aqueous phase liquids (DNAPL), such as creosote, move through aquifers until complete depletion or encountering an impermeable layer. The optical image profiler (OIP) is a Leia mais…

O papel da inteligência artificial no avanço da previsão de extremos de tempo e clima: sistema inteligente de previsão de extremos climáticos

Resumo: Diante do crescimento exponencial na frequência e intensidade de extremos climáticos em todos os continentes, crescimento este decorrente do aquecimento global resultante do acúmulo de gases de efeito estufa na atmosfera, faz-se mister desenvolver a capacidade de previsão de tais extremos climáticos com maior antecedência e acurácia. Este artigo Leia mais…

INSCREVA-se em nossa newsletter

Receba nossas novidades em seu e-mail.

SUBSCRIBE to our newsletter

Receive our news in your email.

Pular para o conteúdo