There is currently a cogeneration deficit at a sugar plant near Nepeña, Ancash, Peru, where the exhaust steam from the mill area is approximately 235◦C. The steam should be at a temperature close to 120◦C, therefore, the heat is dissipated without being recovered. The waste heat available in the plant is mainly exhaust gases and mill area exhaust steam, so the installation of an Organic Rankine Cycle (ORC) is proposed as a solution for the use of waste heat, with the objective of optimizing cogeneration in the plant. Three systems are proposed: ORC with exhaust gas system, ORC with unified system and ORC with total unified system, so the thermoeconomic analysis in this article is made based on a Series Heat Exchangers ORC (SHEORC). For this purpose, six scenarios will be analyzed in which the electrification of the mills and the direct sale of energy to the power grid will be propos...

Flame acceleration plays an important role in determining the onset of deflagration-to-det­onation transition (DDT) phenomenon that is relevant to novel pressure-gain propulsion and explosion safety research. Accordingly, this work explores the influence of the separa­tion distance between obstacles (S) inside a 1050 mm closed duct on the acceleration of premixed flames fueled by a stoichiometric methane/air mixture at 40 kPa pressure. The studied duct geometry features a 96 mm x 96 mm square cross section and includes five obstacles along the wall with a 75% blockage ratio, each delineated by side dimensions of 96 mm x 96 mm and square holes of 48 mm x 48 mm. Experimental and direct numerical simulations (DNS) techniques are employed here to investigate the flame acceleration dy­namics under different operating conditions. More specifically, high-speed video captures the dynamics of ...