Temperature Control Research Papers - Academia.edu (original) (raw)

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- Engineering, Microfluidics, Heat Transfer, Lab On A Chip
- by Argimiro R. Secchi
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- Chemical Engineering, Process Control, Stability, Process
- by Nagesh B
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- Biomedical Engineering, Humans, Computer Simulation, Male
- by Ksouri Mekki
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- Engineering, Control Theory, Adaptive Control, Nonlinear Control
- by Frederic Fahey
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- Positron Emission Tomography, Humans, Child, Female
- by Juan Jorge Rodriguez
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- Mechanical Engineering, Heat Transfer, Fluid Dynamics, System Design
- by Liem Pham
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- Engineering, Carbon, Pyrolysis, Cyclic Voltammetry
- by Jorge Trierweiler
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- Fluidized Bed, Pid Controller, Temperature Control
- by Giovanni Muscato
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- Chemical Engineering, Nonlinear dynamics, Process Control, Flow Control

Past research with high temperature molten carbonate electrochemical cells has shown that carbon dioxide can be separated from flue gas streams produced by pulverized coal combustion for power generation. However, the presence of trace contaminants, i.e., sulfur dioxide and nitric oxides, will impact the electrolyte within the cell. If a lower temperature cell could be devised that would utilize the benefits of commercially-available, upstream desulfurization and denitrification in the power plant, then this CO2 separation technique can approach more viability in the carbon sequestration area. Recent work has led to the assembly and successful operation of a low temperature electrochemical cell. In the proof-of-concept testing with this cell, an anion exchange membrane was sandwiched between gas-diffusion electrodes consisting of nickel-based anode electrocatalysts on carbon paper. When a potential was applied across the cell and a mixture of oxygen and carbon dioxide was flowed over the wetted electrolyte on the cathode side, a stream of CO2 to O2 was produced on the anode side, suggesting that carbonate/bicarbonate ions are the CO2 carrier in the membrane. Since a mixture of CO2 and O2 is produced, the possibility exists to use this stream in oxy-firing of additional fuel.From this research, a novel concept for efficiently producing a carbon dioxide rich effluent from combustion of a fossil fuel was proposed. Carbon dioxide and oxygen are captured from the flue gas of a fossil-fuel combustor by one or more electrochemical cells or cell stacks. The separated stream is then transferred to an oxy-fired combustor which uses the gas stream for ancillary combustion, ultimately resulting in an effluent rich in carbon dioxide. A portion of the resulting flow produced by the oxy-fired combustor may be continuously recycled back into the oxy-fired combustor for temperature control and an optimal carbon dioxide rich effluent.

- by James Pennline
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- Mechanical Engineering, Chemical Engineering, Carbon Dioxide, Carbon Sequestration
- by Aaron Hernandez
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- Analytical Chemistry, Gas Sensor, Relative Humidity, Temperature Dependence
- by Chor Wong
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- Chemical Engineering, Analytical Chemistry, Catalysis, Silica
- by Giovanni Dotelli
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- Engineering, Kinetics, Fluid Dynamics, Modelling and simulation
- by Tim Aerts
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- Engineering, Corrosion, Temperature, Heat Flux
- by ibrahim kaya
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- Process Control, Manufacturing Engineering, Time Delay, Feedback Control
- by Rafael Maya-Yescas
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- Chemical Engineering, Process Control, Process, Fluid Catalytic Cracking
- by Mihai Dinca
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- Engineering, Education, Design, Engineering Education
- by Rachelle Lessen
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- Patient Care, Temperature Control, Human Milk
- by Narender Reddy
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- Engineering, Fuzzy Logic, Fuzzy Logic Control, Humans
- by Jafar Towfighi
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- Mechanical Engineering, Civil Engineering, Energy, Raw materials
- by jhem reyes
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- Marketing, Technology, Hospitality Management, Packaging
- by N. Sigrimis and +1
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- Engineering, Control system, Water Table, Integrated Management
- by Paul Webley
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- Engineering, Earth Sciences, Environmental Sciences, Temperature Control
- by Iqbal Mujtaba and +1
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- Chemical Engineering, Model Predictive Control, Modeling, Robust control
- by Zinat Ara Nisha
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- Incubator, Temperature Control, Pulse Width Modulation (PWM)
- by Muhammad Usama
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- Engineering, Bioprocesses, Bioreactors, Temperature Control
- by Marie-Véronique LE LANN
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- Chemical Engineering, Process Control, Fluid flow, Physical Modelling
- by Pat Sandra
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- Engineering, Program Analysis, Biological Sciences, Gas Chromatography
- by Dr. Redmond R . Shamshiri
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- Instrumentation Engineering, Mechanical Engineering, Agricultural Engineering, Thermodynamics

This paper presents a comparison of the performance of different control algorithms in two types of systems; one exhibiting fast dynamics and the other slow dynamics. The first control system regulates the speed of a DC motor, while the second control system regulates the temperature of an electrical heater. This systems' performance comparison pretends to evaluate the energy consumption, as well as the controllers' transient response in order to identify the best control strategy for each system. System models are obtained through the responses to a pseudorandom binary signal (PRBS) and the least squares fit method using an auto-regressive model with an exogenous variable (ARX). The implemented control algorithms used in this study are: pole placement regulator (state-space controller) with integral error processing, auto-tunable proportional-integral-derivative (PID) controller, neural PID controller, unconstrained model predictive control (MPC), fuzzy PID controller, neuro-fuzzy controller, bayesian controller and an optimal quadratic regulator (LQR). A detailed analysis of the performance and energy consumption index is performed, that allow the categorization of the control strategies in accordance with their performance.

Control engineering is one of the important engineering topics taught at many engineering based universities around the world in most undergraduate and postgraduate courses. The control engineering curriculum includes both the classical feedback based control theory and the state space theory. The modern control theory is based on the intelligent control algorithms utilizing the soft computing techniques, such as the fuzzy control theory and neural networks. Laboratory work is an important part of any control engineering course. The problem with the modern control theory laboratories is that it is essential to offer simple experiments to students so that they can easily put the complex theories they have learned in their courses into practice and see and understand the results. This paper describes the design of a low-cost fuzzy based microcontroller temperature control system using off the shelf products. The developed system should provide a low-cost fuzzy control experiment in the laboratories for students studying control engineering.

- by Carolina Shene
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- Adaptive Control, Dynamic Simulation, Temperature Control, Food Sciences

ABSTRACT Anaerobic digestion results in the biological breakdown of the sludge into methane, carbon dioxide, unusable immediate organics and a small amount of cellular protoplasm, under anaerobic conditions, mainly for sludge stabilization and volume reduction. This chapter introduces anaerobic digestion theory, biochemistry, microbiology, organic loading, temperature control, digester design, gas collection, and methane gas use, maintenance, and design examples. Key WordsAnaerobic digestion-digester design-methane production-gas collection-gas use-sludge pumping-sludge stabilization-volume reduction.

- by Yung-tse Hung
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- Microbiology, Carbon Dioxide, Anaerobic Digestion, Methane
- by İsmail Ekmekçi
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- Materials Engineering, Raw materials, Iron, High Temperature

This unedited report documents research activity carried out by the author and other members of the Smart farming group at the Institute of Advanced Technology (ITMA), Universiti Putra Malaysia, during 2005-2006, on the topic of Design... more

The paper describes the first assessment study of a waverider-derived Mach 5 aircraft design using fuselage integrated-underslung over/under turboramjets with endothermic fuel. The study is based on a tanker-to-tanker mission, which begins at Mach 0.8 and 30,000 feet, with the vehicle accelerating to Mach 12 at constant altitude and then to Mach 5 while climbing to about 90,000 feet. The paper describes the vehicle, the aerodynamic analysis, and the propulsion system and its installed performance, structure design, and analysis. The mission simulation was run using the CSOTAV code developed by the NASA Langley Research Center.

- by Robert Pegg
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- Aircraft Design, Structural Design, Temperature Control, System performance

Water-cooled compressors are well known for providing reliable starting air for marine diesel on small, medium-sized and large ships and engine based power station. This type of compressors is the best choice if the engine room temperature is very high. The water for the cooling system of these compressors are supplied by centrifugal pumps and has radiator system for cooling the hot water that comes out from the compressor. Air production could be hampered either by operators wrong manual operation of centrifugal pumps or heat exchanger system which eventually affect engine operation also. The aim of this paper is to describe the methods of the PLC controlled system to maximize the process efficiency, avoiding the operator alienation and keeps it safe trough automated system with PLC logic.

- by IJCSMC Journal and +1
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- Electrical Engineering, Computer Science, Electrical, PLC Automation

This paper presents a simulation model of the electric part of a grid connected micro turbine (MT). Analyses of load following behaviour of micro turbine as distribution energy resource have been performed the model representation of the main components of the electric system that are the permanent magnet synchronous machine, fuel control temperature control and speed control. The micro turbine is controlled so that the energy is exchanged with unity displacement factor. The simulation results obtained with the model using SimPower Systems software the simulation model is used to analyze the micro turbine the model is built from the dynamics of each part with their interconnections. This simplified model is a useful tool for studying the various operational aspects of micro turbines. The performance of developed model is studied by connecting it to an isolated load.

... non-culturable forms (McDowell &amp; Sheridan, 2001). However, this serious pathogen is associated with carcasses (Chapman et al., 2001 and Zhao et al., 1995), derived retail meat products (Chapman et al., 2001), and raw food... more

- by Ian Blair
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- Escherichia coli, Listeria monocytogenes, Staphylococcus aureus, Temperature Control
- by Thanh Nguyen
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- Earth Sciences, Mass Spectrometry, Sample Preparation, Biological Sciences
- by Simon Mitchell
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- Geology, Geochemistry, Geophysics, Cenomanian
- by manfred wagner
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- Mechanical Engineering, Chemical Engineering, Data Analysis, Modeling

An economic analysis of new meat and poultry inspection rules evaluates the benefits and costs of reducing microbial pathogens and preventing foodborne illness. The new rules require federally-inspected processors and slaughterhouses to adopt Hazard Analysis and Critical Control Points (HACCP) systems to identify potential sources of pathogen contamination and establish procedures to prevent contamination. The benefits of reducing pathogens, which include lower medical costs of illness, lower productivity losses, and fewer premature deaths, range from 1.9billionto1.9 billion to 1.9billionto171.8 billion over 20 years, depending upon the level of pathogen control. These benefits will likely exceed the costs of HACCP, which are estimated at between 1.1and1.1 and 1.1and1.3 billion over 20 years. Small meat and poultry processing firms may bear higher costs under the new regulations than do large firms. Non- regulatory alternatives to improving food safety, such as education, labeling, market-based incentives for path...

- by Michael Ollinger
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- Food Safety, Food Consumption, Food supply, Economic analysis

In this chapter, the nonlinear and linear mathematical model of a CSTR where an irreversible exothermic reaction takes place is considered. From the analysis of the steady states, the curves of removed and generated heat are deduced in order to determine the equilibrium point and the transfer function of the reactor. Considering a set of reactors ranging from small to

- by pedro albertos
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- Linear Model, Feedback Control, Stirred Tank Reactor, Scaling up
- by sameer kumar
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- Design, Network Security, Motor Control, Wireless Sensor Networks