This study investigates the industrial-scale application of a simple convective solar drying process pineapples as part circular economy strategy for developing countries. A renewable energy concept is presented, which follows aims by effectively employing system biogas production and two-stage system. Both these systems meet requirements implementation in specific conditions countries, Togo, where pineapple major crop, taken an example. With respect to earlier findings available literature,...

Abstract Plastic immersed heat exchangers are used in various applications where chemically neutral and noncorrosive equipment is required. Their potential competitors, namely, polymeric hollow‐fiber bundles, were investigated. Three different fiber bundles tested as coolers of a hot reservoir. Two types polypropylene hollow fibers with outside diameters employed. Fibers twisted curvature to achieve better distribution improve natural convection on their outer surface. Calculation by...

The paper focuses on the research, development, and application of simple, reliable, efficient, low maintenance technology for production biogas from local organic agricultural wastes in Republic Togo. This is intended as a sustainable decentralised energy supply, which should meet the economic social conditions developing countries West African region. briefly outlines current state small-scale Africa. Several reviews already existing operated facilities mentioned area are named evaluated....

Abstract The present article deals with transient thermal stress calculation on a safety horizontal shell and tube condenser. This condenser is used in power plant for cooling of hot steam diverted from the turbine case its emergency shutdown. standard was provided according to EN 13445 steady regime. As consistent this calculation, an expansion joint must be shell. main aim describe detailed temperature field tubes, using finite element method analysis, longitudinal stresses tubes during...

Abstract Die nachhaltige Nutzung von Biogas leistet einen wesentlichen Beitrag zur Reduktion Treibhausgasemissionen. Im Gegensatz dezentralen Energieumwandlung in Blockheizkraftwerken eröffnet die Einspeisung bestehende Gasnetze effizientere Einsatzmöglichkeiten. Voraussetzung für ist Aufbereitung auf Erdgasqualität. Es werden wichtigsten Aufbereitungsverfahren sowie deren Vor‐ und Nachteile besprochen. Während chemische Absorptionsverfahren eine hohe Produktgasreinheit gewährleisten,...

Abstract Simple but reliable methods for the determination of physicochemical properties gari were evaluated parameters, such as grain size, bulk density, swelling index, moisture content, gross calorific value, cyanide and acidity content. The sizes between 525 928 μ m (weighted means), densities 0.541 0.699 g/cm³, indices 3.21 4.33. contents ranged from 4.30 to 9.19%. values found 15.45 15.82 kJ /g. 0 4.8 ppm. varied among 0.55 1.62%. Correlation tests verified influences size content on...

Abstract This study investigates the behavior of fruit and vegetable samples during drying. The experimental data are fitted to several different thin‐layer drying models. Regression analysis is used determine model parameters, while statistical indicators serve evaluate goodness fit. power function gives best fit for all examined samples. Based on this model, heat storage technologies can be combined ensure that required residual moisture content an agricultural product reached. It...

This paper presents the process of designing an experimental device (TESTER) developed to test and assess comprehensive rate particulate fouling in various heat recovery processes.The evaluation can be used not only for direct flue gas from combustion processes (e.g., furnaces, wateror steam-boilers, etc.) but also waste (such as cement production, zinc dioxide etc.).The assessment requires diverse operating conditions, including velocity, temperature, particles volume, size, different types...

This study investigates the possible need for flange joint design adaptation when dealing with hydrogen.The focuses on comparison of two different leakage rates representing higher tightness due to leak-prone nature hydrogen molecules.The model calculation following European standard EN 1591-1 based an industrial in a natural gas pipeline outlines impact changing class load ratios bolts, gasket and flanges.While operation remains safe specific case studied, findings underscore careful...

The article discusses the construction aspects of a developed modular device for testing influence high-temperature flue-gas fouling on chosen heat exchanger tube-bundle geometries and effectiveness various methods online cleaning, which is currently being by Institute Process Engineering (IPE) at Brno University Technology (BUT), in cooperation with company Eveco Brno.The will ease designing new exchangers, withstanding longer operation severe conditions.

This paper presents the process of designing an experimental device (TESTER) developed to test and assess comprehensive rate particulate fouling in various heat recovery processes.The evaluation can be used not only for direct flue gas from combustion processes (e.g., furnaces, wateror steam-boilers, etc.) but also waste (such as cement production, zinc dioxide etc.).The assessment requires diverse operating conditions, including velocity, temperature, particles volume, size, different types...