The efficient utilization of waste heat from industrial processes can provide a significant source energy savings for production plants, as well be driver sustainable operations and the abatement emissions. Industrial usually is contained in liquid or gaseous outlet streams. Although possible ways to utilize are discussed wide variety papers, these either only general overview options opportunities focus on narrow range processes. aim present paper discuss practical aspects European Union so...

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,...

Heat regenerators transfer heat from one gas to another, with by storage in solids. This type of exchanger is used primarily when has be transferred between enormous amounts gases, the gases are dirty and liable plug up recuperative exchangers, or too hot reactive. Regenerative can provide at same volume much higher area lower friction factor than exchanger. Furthermore, regenerative most cases better efficiency its construction simpler. The calculation this relatively complicated. Moreover,...

The design procedure of a process tubular furnace (or fired heater) can generally be divided into three stages: the preliminary furnace, detailed thermal and hydraulic simulation final solution, mechanical solution (stress analysis, drawings preparation, etc.). first stage (the cost prediction) is usually connected with proposal for customer when only basic data are known. In this stage, it appropriate designer to not have much detail reliable method. radiant chamber main part such method...

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...

The objective of the present study was to experimentally investigate and compare characteristics three oxygen-enhanced combustion (OEC) methods; premix enrichment (PE), air-oxy/fuel (AO), additionally also oxygen lancing (OL) method. overall concentration varied from 21% 38%. Combustion tests were carried out using gas burner with thermal input 750 kW fired by natural gas. OEC methods, such as nitrogen oxides carbon monoxide in flue gas, in-flame temperatures distribution horizontal symmetry...

Reducing energy costs in Europe is more challenging than before due to extreme price increases. The use of local renewable sources one way contribute this effort. In the case spa resorts, heat from hot springs for therapeutic baths an option. It necessary cool down thermal mineral water a temperature acceptable human body. However, high content water, heavy fouling can be problem conventional exchangers. purpose study identify suitable cooling technology terms required capacity and waste...

Abstract Plate type heat exchangers are widely used in process industries for gas/gas applications. Typically, these prove to be very efficient, especially as air preheaters furnaces or equipment environmental protection (e.g., units thermal disposal of wastes). For economic reasons, there is a need new optimization approach plate exchanger design and operation. The objective function achieve minimal total annual cost exchangers. Pressure drop transfer interdependent, both them strongly...

Tube coil arrangement dominantly influences the thermal-hydraulics characteristics of furnace and its economy. The presented method is based on standard long-used design methods (Lobo-Evans method, Belokon method). It shown how these global can be (for common-operating conditions) suitably generalized simplified. allows purpose optimum arrangement) to arrange basic heat transfer equation for radiant chamber. In connection with investment cost relations individual subsystems (tube coil,...

Abstract Fouling of heat exchangers' transfer areas is one the serious problems certain process plants. A waste incinerating plant a typical example such plant. The main stream in (i.e., produced flue gas) and its thermophysical characteristics properties significantly influence operating, maintenance, investment costs installed equipment service life. Moreover, gas can vary over wide range. This contribution deals with issue fouling mechanism at area tubular plants for thermal processing...

Abstract Uniform flow distribution is often required by process equipment for its correct and reliable operation. Due to the fact that resulting influenced shapes of splitting combining manifolds, uniformity can be considerably increased careful design. In case high‐temperature applications, uniform usually crucial. The aim this paper provide a formula coefficient static regain parallel systems containing linearly tapered manifolds with rectangular cross sections connected double U‐tubes....

Fired equipment suffers from local overloading and fouling of heat transfer surfaces, products are not the required quality, operating costs increased due to high pressure drop process fluids. Such operational issues affected by non-uniform distribution fluid flow flux variability. Detailed numerical analyses often applied troubleshoot these problems. However, is this common practice effective? Is it better prevent problems occurring using quality design? It is, according general consensus....

The paper presents a method developed for the energy retrofit of specific Heat Exchanger Networks not containing Utility Paths. This useful and highly practically oriented involves systematic approach to obtaining most efficient minimal modification topology Network, which brings greatest benefits in terms savings modified process. In principle, it is focused on finding suitable location new heat exchanger insertion create Path. next step detailed design newly integrated using commercial...