Developing an efficient sorbent and adopting ethylene adsorption separation unit in downstream of oxidative coupling methane (OCM) process were the main focus present study. Since mole fraction generated OCM reactor outlet is relatively low, processing cost accompanying components thereby per ton using conventional cryogenic are insupportable. Zeolite 13X was modified this research, demonstrati...

We employ a synergistic material and process development strategy to improve the performance of single-cycle vacuum pressure swing adsorption (VPSA) for hydrogen purification CO2 separation from reforming-based synthesis. Based on process-informed adsorbent selection criteria, including high cyclic capacity selective uptake impurities like CO, N2, CH4 over H2, metal organic framework (MOF), Cu-...

A. Lingamneni, J.-L. Nagel, P.-A. Beuchat, M. Morgan, C. C. Enz, C. Piguet In this paper, CSEM presents a novel cross-layer co-design framework for implementing high energy-parsimonious inexact circuits, or circuits in which the accuracy of the output can be traded for substantial cost (energy, delay and/or area) savings, with zero hardware overheads. Measured results of a prototype chip (consi...

In a previous work, simultaneous heat and mass transfer between a freely moving object and a gas fluidized bed of adsorbent particles were investigated. Sublimation of naphthalene spheres into a 13X molecular sieve bed was used as amodel system.P In an attempt to give an interpretation of these experimental data, the isotherms and the adsorption heat of this adsorbent/adsorbate pair have been d...

Done: All A–1 Find, with explanation, the maximum value of f(x) = x−3x on the set of all real numbers x satisfying x +36 ≤ 13x. Solution: Write the constraint as (x − 13/2) + 36 ≤ 169/4 or (x − 13/2) ≤ 25/4. This becomes |x − 13/2| ≤ 5/2 or 4 ≤ x ≤ 9 which is the union of−3 ≤ x ≤ −2 and 2 ≤ x ≤ 3. The given cubic has derivative 3(x−1) which is positive for x > 1 and for x < −1. Thus the maximum...

Artificial Neural Networks (ANNs) are inherently parallel architectures which represent a natural fit for custom implementation on FPGAs. One important implementation issue is to determine the numerical precision format that allows an optimum tradeoff between precision and implementation areas. Standard single or double precision floating-point representations minimize quantization errors while...

In this paper, we develop energy efficient designs for the Fast Fourier Transform (FFT) on FPGAs. Architectures for FFT on FPGAs are designed by investigating and applying techniques for minimizing the energy dissipation. Architectural parameters such as degrees of vertical and horizontal parallelism are identified and a design domain is created through a combination of design choices. We deter...