AbstractIsolated energy systems seem to be a promising option for electrifying
remote locations where grid extension is not feasible or economical. Integration
of battery bank as means of energy storage with different renewable energy
systems can enhance the system reliability and its overall performance.
Therefore, appropriate choices of generator sizes and the battery bank capacity
are critical ... hiện toàn bộ
AbstractRotary cement kilns are widely used to convert calcineous raw meal into
cement clinker, and are key components in the cement industry. In this article,
we report a comprehensive computational fluid dynamics (CFD)‐based model to
capture key transport processes in rotary cement kilns. Separate but coupled
computational models were developed for the bed and the freeboard regions of the
rotary... hiện toàn bộ
AbstractThe clarification of the unsteady falling movement of immersed bodies in
fluids occurs in several natural situations and many manufacturing processes,
e.g. particulate processing and two‐phase solid–liquid applications. In this
paper, the acceleration motion of a spherical particle in an incompressible
Newtonian environment has been studied for a wide range of Reynolds numbers
using a drag... hiện toàn bộ
AbstractThe electroactivity of Pt1Co1(a/o)/C and Pt3Cr1(a/o)/C for the oxygen
reduction reaction (ORR) in ethanol‐containing medium was studied. It was found
that these cathodes present a high tolerance to this alcohol. The onset
potential of the ORR decreased at 14 and 12 mV in the presence of 0.5 M ethanol
on Pt1Co1/C and Pt3Cr1/C, respectively. The tolerance of the Pt alloys is one
order of mag... hiện toàn bộ
Juan M Montelongo-Luna, William Y. Svrcek, Brent R. Young
AbstractThe constant tightening of environmental regulations and the ongoing
need to reduce operating costs have posed a challenge for the design of any
chemical process. Process engineers use process simulators to help them perform
calculations that will, ultimately, result in design parameters or operating
conditions for a plant or process. Exergy is a potential indicator that can aid
in the des... hiện toàn bộ
AbstractBecause of ultra‐low permeability of shale rocks, capillary pressure is
very high. Wettability not only determines the value of capillary pressure, but,
more importantly, it also determines whether the capillary pressure is a driving
force or a resistance to fluid flow. This paper is to address the wettability
characteristics of shale rocks. First, the common methods to determine
wettabili... hiện toàn bộ
AbstractMany problems of process synthesis and design in chemical engineering
can be modeled as mixed integer nonlinear programming (MINLP) problems. They
include both the continuous (floating point) and integer variables. A common
feature of this class of mathematical problems is the potential existence of
nonconvexities due to a particular form of the objective function and/or the set
of constra... hiện toàn bộ
ABSTRACTEsterification of acetic acid with methanol to produce methyl acetate in
an isothermal stirred batch reactor has been studied. Sulfuric acid was used as
a liquid catalyst, and Indion‐180, Indion‐190 and Amberlyst‐16wet ion exchange
resins were used as solid catalysts. The feed mole ratio was varied from 1 : 1
to 1 : 4. The reaction temperatures were varied from 305.15 to 333.15 K for
sulfu... hiện toàn bộ
AbstractDirect contact membrane distillation (DCMD) was operated at low
temperatures from 25 to 40 °C to suit the purpose of thermally concentrating
sensitive liquid foods, especially fruit juices to high solid content
concentrate with most of the quality attributes preserved.A lab scale DCMD unit
has been set up at the Centre for Plant and Food Science, University of Western
Sydney. Hollow fibre ... hiện toàn bộ
Nurliyana Nasuha Safie, Abu Zahrim Yaser, Nidal Hilal
AbstractStudies have previously been done on efficacies of chitosan and zeolite
in ammonium ion (NH4+) removal. However, no study compares the adsorption
performance of natural zeolite (NZ) and activated NZ (ANZ) with high molecular
weight chitosan (HMWC) and low molecular weight chitosan (LMWC). Hence, this
study investigates the potentials of NZ, ANZ, LMWC, and HMWC in NH4+ removal.
The characte... hiện toàn bộ