Performance Simulation of Reheat Two-Stage Adsorption Cycle

A.S. UYUN; Yoshinori HAMAMOTO; K.C.A. ALAM; Atsushi AKISAWA; Akira AKAHIRA; Takao KASHIWAGI

doi:10.1299/jsmeenv.2004.14.356

Research on Opportunistic Beamforming Technology in Sparse Network

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.488-489.793 ◽

2012 ◽

Vol 488-489 ◽

pp. 793-798

Author(s):

Lei Xu ◽

Quan Sheng Jiang ◽

Han Sheng Yang

Keyword(s):

Power Control ◽

Beam Power ◽

Ofdm Systems ◽

Two Stage ◽

Performance Simulation ◽

Control Techniques ◽

Sparse Network ◽

Opportunistic Beamforming ◽

Channel Beam ◽

Vector Matrix

In this work, an opportunistic beamforming method combined with OFDM technology is proposed to solve the mismatchment of channel beam-forming matrix and vector-matrix in sparse network. Firstly, introduce a two-stage framework, as scheduling and ultimately beamforming, propose beam power control techniques that do not change the direction of the second-stage beams. Then we adapt this scheme to the multi-carrier scenario, such as OFDM systems, in order to improve the whole system’s performance. Simulation results show that this two-stage OBF adjoined to beam power control techniques scheme can improve the total throughput in sparse network system.

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Innovative Design and Performance of Three-Bed Two-Stage Adsorption Cycle under Optimized Cycle Time

Journal of Environment and Engineering ◽

10.1299/jee.7.92 ◽

2012 ◽

Vol 7 (1) ◽

pp. 92-108 ◽

Cited By ~ 3

Author(s):

Abul Fazal Mohammad Mizanur RAHMAN ◽

Yuki UEDA ◽

Atsushi AKISAWA ◽

Takahiko MIYAZAKI ◽

Bidyut Baran SAHA

Keyword(s):

Cycle Time ◽

Two Stage ◽

Innovative Design ◽

And Performance ◽

Adsorption Cycle

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Experimental Analysis of Reheat Two-Stage Adsorption Cycle

The Proceedings of the Thermal Engineering Conference ◽

10.1299/jsmeted.2004.7 ◽

2004 ◽

Vol 2004 (0) ◽

pp. 7-8

Author(s):

Aep Saepul UYUN ◽

K.C. Amanul. ALAM ◽

Akira AKAHIRA ◽

Yoshinori HAMAMOTO ◽

Atsushi AKISAWA ◽

...

Keyword(s):

Experimental Analysis ◽

Two Stage ◽

Adsorption Cycle

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Numerical analysis of a serial connection of two staged SOFC stacks in a CHP system fed by methane using Aspen TECH

Polish Journal of Chemical Technology ◽

10.2478/pjct-2019-0007 ◽

2019 ◽

Vol 21 (1) ◽

pp. 33-43

Author(s):

Paulina Pianko-Oprych ◽

Mateusz Palus

Keyword(s):

Electrical Performance ◽

Fuel Utilization ◽

Optimal Control Strategy ◽

Two Stage ◽

Performance Simulation ◽

Serial Connection ◽

Funded Project ◽

Chp System ◽

Sofc Stacks ◽

Good Agreement

Abstract The objective of the study was to develop a steady-state system model in Aspen TECH using user-defined subroutines to predict the SOFC electrochemical performance. In order to achieve high overall fuel utilization and thus high electrical efficiency, a concept of Combined Heat and Power system with two-stage SOFC stacks of different number of cells was analyzed. The concept of two-stage SOFC stacks based system was developed in the framework of the FP7 EU-funded project STAGE-SOFC. The model was validated against data gathered during the operation of the proof-of-concept showing good agreement with the comparative simulation data. Following model validation, further simulations were performed for different values of fuel utilization to analyze its influence on system electrical performance. Simulation results showed that the concept of two-stage SOFC stacks configuration was viable and reliable. The model can be useful for development the optimal control strategy for system under safe conditions.

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Hardware Implementation of Two Stage Interleaved Boost Converter for Electric Vehicle Application

International Journal of Vehicle Structures and Systems ◽

10.4273/ijvss.13.3.26 ◽

2021 ◽

Vol 13 (3) ◽

Author(s):

S. Suresh ◽

R. Zahira

Keyword(s):

Electric Vehicle ◽

Power Loss ◽

Hardware Implementation ◽

Boost Converter ◽

Switching Frequency ◽

Two Stage ◽

Performance Simulation ◽

Voltage Stress ◽

Interleaved Boost Converter ◽

Current Ripple

This paper deals with the design and simulation of two stage interleaved boost converter (IBC) for electric vehicle (EV) applications. The IBC is considered as a better solution among the different DC-DC topologies for EV for reducing the current ripple, power loss and the size of the components. Traditional DC-DC boost converter (BC) is not applicable for high power applications. Use of interleaving technique minimizes the voltage stress on the switching devices and to be improving the converter performance. Simulation is carried out using MATLAB/Simulink software. The prototype of two stage IBC is fabricated to test the performance. Hardware results shows that the inductor power loss is minimum at a switching frequency of 5 kHz compared to that of 10 kHz. The output power at the load end is maximum for 5 kHz switching when compared with 10 kHz switching. The study shows that the operation of IBC at 5 kHz improves the performance.

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Two-stage self-seeding method for preparation of single crystals of poly(phenylene sulfide)

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100153816 ◽

1989 ◽

Vol 47 ◽

pp. 368-369

Author(s):

Sengshiu Chung ◽

Peggy Cebe

Keyword(s):

Single Crystals ◽

High Performance ◽

Dilute Solution ◽

Two Stage ◽

Annealing Behavior ◽

High Performance Polymers ◽

Seeding Method ◽

Phenylene Sulfide

We are studying the crystallization and annealing behavior of high performance polymers, like poly(p-pheny1ene sulfide) PPS, and poly-(etheretherketone), PEEK. Our purpose is to determine whether PPS, which is similar in many ways to PEEK, undergoes reorganization during annealing. In an effort to address the issue of reorganization, we are studying solution grown single crystals of PPS as model materials.Observation of solution grown PPS crystals has been reported. Even from dilute solution, embrionic spherulites and aggregates were formed. We observe that these morphologies result when solutions containing uncrystallized polymer are cooled. To obtain samples of uniform single crystals, we have used two-stage self seeding and solution replacement techniques.

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