162 Aerials – system of a down

Theoretical and experimental investigations of a downdraft biomass gasifierspark ignition engine power system

Theoretical and experimental investigations of a downdraft biomass gasifierspark ignition engine power system
... whole biomass power system The mathematical models of the downdraft gasifier and of the engine were verified separately against experimental information Table Results of proximate and ultimate analysis ... [11] and Channiwala and Parikh [12]; 1/5 of supplied oxygen reacts with carbon contained in biomass to produce CO and CO2, see Mott and Spoone [11] and Channiwala and Parikh [12];  The ratio of ... coupled to analyze the operation of the whole biomass power system for a wide range of operational parameters such as the speed of the engine, the spark advancement, the air factor and the biomass moisture...
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the spillover effects of a downturn in china’s real estate investment

the spillover effects of a downturn in china’s real estate investment
... debate Abstract Real estate investment accounts for a quarter of total fixed asset investment (FAI) in China The real estate sector’s extensive industrial and financial linkages make it a special ... China s377 China s378 China s379 China s380 China s385 China s386 China s387 China s388 China s389 China s390 China s391 China s392 China s393 China s394 China s395 China s396 China s397 China ... China s399 China s400 China s401 China s402 China s403 China s404 China s405 China s406 China s407 China s408 China s409 China s416 China s417 China China s419 s420 China s421 China s422 China...
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Design and analysis of the intake system of a formula SAE car

Design and analysis of the intake system of a formula SAE car
... SUMMARY This study takes a look at the design process of the air intake system of the FSAE car Over the years, much of the design of this system had been carried out through an iterative trial and- error ... aero dynamic package of the race car, as well as avoid areas where heat can be trapped, such as around the exhaust headers or behind the radiator For the configuration of the FSAE race cars, this ... usually 42 leaves three primary areas to start the air intake system, along the longitudinal axis of the car near the top of the main roll hoop, towards either sides of the car slightly above the...
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Modeling and simulation of a downdraft biomass gasifier 1. Model development and validation

Modeling and simulation of a downdraft biomass gasifier 1. Model development and validation
... [5] Ratnadhariya JK, Channiwala SA Three zone equilibrium and kinetic free modeling of biomass gasifier – a novel approach Renew Energy 2009;34:1050–8 [6] Sharma AK Simulation of a biomass gasifier–engine ... module, assuming suitable guess of biomass consumption rate, the airflow rate can be calculated using global mass balance of produced gas, total air, wet biomass and ash For a given input of gas flow ... state model of gas–char reactions in a downdraft biomass gasifier Solar Energy 2003;74:85–91 [9] Babu BV, Sheth PN Modeling and simulation of reduction zone of downdraft biomass gasifier: effect of...
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The Design and Implementation of a Log-Structured File System

The Design and Implementation of a Log-Structured File System
... purpose The separate data area of these database systems means that they not need the segment cleaning mechanisms of the Sprite LFS to reclaim log space The space occupied by the log in a database system ... log as the most up to date ‘‘truth’’ about the state of the data on disk The main difference is that database systems not use the log as the final repository for data: a separate data area is reserved ... has the disadvantage of increasing the amount of data lost during a crash For this paper we will assume that crashes are infrequent and that it is acceptable to lose a few seconds or minutes of...
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The Duality of Memory and Communication in the Implementation of a Multiprocessor Operating System

The Duality of Memory and Communication in the Implementation of a Multiprocessor Operating System
... modify a page of data at a time An attempt by a reader to write previously read data causes a memory fault which converts a reader into a writer and invalidates all other page caches A subsequent attempt ... when it initiates a cache replacement A data manager may restrict the use of cached data by issuing a pager_data_lock request, specifying the types of access (any combination of read, write, and ... A data manager passes data for a memory object to the kernel by using the pager_data_provided call This call specifies the location of the data within the memory object, and includes the memory...
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List the components of a radio system

List the components of a radio system
... Objectives • List the components of a radio system • Describe how different factors affect the design of a radio system • Explain the radio frequency spectrum Components of a Radio System Components ... – Advantages • Can carry up to three times the amount of data as TDMA • Transmissions are much harder to eavesdrop on • A would-be eavesdropper must also know the exact chip in which the transmission ... receiving the signal • Attenuation – A loss of signal strength • Multipath distortion – As a radio signal is transmitted, the electromagnetic waves spread out 24 Signal Strength (continued) 25 Radio...
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Simulation of a Multiple Input Multiple Output (MIMO) wireless system

Simulation of a Multiple Input Multiple Output (MIMO) wireless system
... the appropriate electric field value The ray list contains all of the data about rays propagating from a base station to a field point Each field point has a ray list associated with it A ray ... Fitzpatrick As can be seen, it is passed a particular base station, an image and its order, and also the field point As seen earlier a ray is made up of nodes, two of these nodes are always the base ... antennas used in a linear array Simulation of a MIMO wireless system – John Fitzpatrick 2.4 Linear arrays Beamforming can be accomplished by using many different types of arrays, such as linear,...
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PERFORMANCE OF A COMBINED CONSTRUCTED WETLAND SYSTEM FOR TREATING VILLAGE SEWAGE IN LAKE DIANCHI VALLEY

PERFORMANCE OF A COMBINED CONSTRUCTED WETLAND SYSTEM FOR TREATING VILLAGE SEWAGE IN LAKE DIANCHI VALLEY
... adopted to treat a typical village sewage There is the long rain season in local place always accompanied with strong storms at the beginning The stormwater runoff not only brings the large amounts ... or float method RESULTS AND DISCUSSION Removal performance of constructed wetland system for village sewage The COD Profiles of influent and effluent, as well as corresponding removal rate are ... was lower than 0.6 mg/L and removal rate could achieved 85.1% Table shows average removal performance of the constructed wetland system over 430 days operation The mean removal rates of total...
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Optimization of design and operating parameters on the year round performance of a multi-stage evacuated solar desalination system using transient mathematical analysis

Optimization of design and operating parameters on the year round performance of a multi-stage evacuated solar desalination system using transient mathematical analysis
... performance and thermal characteristics of the system Description of the multi-stage evacuated solar desalination system The Multi-stage evacuated solar desalination system is a combination of ... Results and discussion There are many design and operating parameters which affect the performance characteristics and distillate yield of the multi-stage evacuated desalination system These parameters ... Conclusion A transient mathematical model was developed for the flat plate collector and the multi-stage evacuated solar desalination system to evaluate the optimum design configuration and system...
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Development of DMC controllers for temperature control of a room deploying the displacement ventilation HVAC system

Development of DMC controllers for temperature control of a room deploying the displacement ventilation HVAC system
... develop a controller for temperature control inside a room within a desired band of temperatures for comfort The details of the geometry of the room and the HVAC system based on displacement ventilation ... disadvantages of the DMC controller First, the DMC controller is a local controller which can only guarantee the stability of the system in a local area Second, the DMC controller is a model-based controller ... controlling the temperature in a room deploying a displacement ventilation HVAC system without heater It is a nonlinear system with large disturbance, which has delay in the control variable and in the...
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Exergoeconomic optimization and improvement of a cogeneration system modeled in a process simulator using direct search and evolutionary methods

Exergoeconomic optimization and improvement of a cogeneration system modeled in a process simulator using direct search and evolutionary methods
... with a pointful appraisal of the mathematical optimization and exergoeconomic improvement of energy systems modeled in a professional thermodynamic process simulator First, for mathematical optimization, ... graduate Thermodynamics in the Department of Mechanical Engineering at UFRJ He is a member of the Brazilian Society of Mechanical Sciences and Engineering (ABCM) and of the American Institute of ... Boca Raton, FL, 2008 Cordeiro A. S Optimization and Exergoeconomic Improvement of Thermal Systems Modeled in a Process Simulator Using Direct Search and Stochastic Methods M.Sc Dissertation (in...
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Tài liệu tiếng anh Điện tử công suất mạch MERS Loss and rating consideration of a wind energy conversion system with reactive compensation by magnetic energy recovery switch

Tài liệu tiếng anh Điện tử công suất mạch MERS Loss and rating consideration of a wind energy conversion system with reactive compensation by magnetic energy recovery switch
... Relative supply rating 8.4 pu 10.4 pu Rating and loss considerations for large scale system The losses and ratings of a large scale electrical conversion system with MERS solution and with a 2-level ... followed by description of experiments on a 50 kW PM generator and theoretical large scale system loss and rating investigations Magnetic Energy Recovery Switch (MERS) Configuration and operation ... generator voltage and the maximum output power can be increased A configuration using a variable series compensation device called a magnetic energy recovery switch (MERS) and a diode bridge has...
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Developing a system of exercises to improve public speaking skill in interpreting for the 4th year students of english at vinh university

Developing a system of exercises to improve public speaking skill in interpreting for the 4th year students of english at vinh university
... understanding about public speaking skill in interpreting - The factual states of students in public speaking in interpreting - Students practice of public speaking skill in interpreting 16 2.4.1.1 Students ... VINH UNIVERSITY DEPARTMENT of FOREIGN LANGUAGEs ==== ==== DEVELOPING A SYSTEM OF EXERCISES TO IMPROVE PUBLIC SPEAKING SKILL IN INTERPRETING FOR THE 4TH YEAR STUDENTS OF ENGLISH AT VINH UNIVERSITY ... of public speaking exercise The table presents the information about doing public speaking exercises of students at Vinh University As an overall trend, we can see that reading aloud and speaking...
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