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To meet the condition for reutilization of derived energy and melting ash, the plasma gasification process was adopted to use high temperature of plasma furnace to gasify wastes (e.g., paper reject, paper sludge and hydro-cleaner residues). Processing paper pulp to residue derived fuel (RDF) can enhance physical stability and improve gasification efficiency. Paper pulp derived RDF has 12% ash, 15~20%...
An orthogonal experimental scheme is designed for analyzing the powertrain system based on GT-drive. What extent of engine, gear-box and final drive influence on dynamic and economic performance of vehicle is presented respectively; hence, we can get An optimal matching option is get by comparing the results under different schemes. The effectiveness of this method is proven by real experiment.
Supercritical water-cooling reactor is one of the advanced nuclear power plants as the fourth generation reactor of internationally recognized. The plant system design is once-through cycle, feed-water flow rate are provided from pressure head by pump through the reactor core became steam, and directly into the turbine. There is not a recirculation loop in this cycle, this is the the biggest difference...
This paper presents a method of misfire diagnostic detection on the LPG vehicle. The misfire rates of the catalytic converter irreversible damage temperature in full-working-condition and the misfire rates based on the exceeding OBD system emission limit in GB I test are respectively confirmed by Class A and B misfire diagnostic calibration experiments. The misfire diagnostic method in this paper...
During the combustion of straw, the formation of deposition, which destines to furnace erosion and exerts great influence on safety operation, on heating surface is affected by many factors. The paper studies the influence of speed and amount of air. According to the test: the air speed affects the sedimentary quantity of fly ash and the deposition position; the air amount affects the fuel combustion...
Heat release analysis in diesel engines is a powerful method to investigate the combustion process and engine performance. The aim of this study is to simulate the heat release rate during combustion using the measured in-cylinder pressure based on thermodynamic principles. After determining the submodels such as mass and composition, gas and fuel properties, heat of combustion, heat loss to the walls,...
A SOFC/GT hybrid system is difficult to operate on design conditions all the time. Adjustment methods of output power from a gas turbine (GT) and a solid oxide fuel cell (SOFC) are necessary and very important which influence the performance characteristics of an SOFC/GT hybrid system. In this paper, performance analyses of the hybrid system with two different control modes are conducted based on...
Aiming at the aircraft fuel system which adopts the technology of vapor cycle cooling system, and uses the fuel as a kind of effective cold source of condensers and other heat exchangers, this paper established the mathematical models of the fuel system and major components. On the basis of Simulink software platform, the simulation module of fuel system was established by developing the S-functions...
In this paper, a simulation model was built for in cylinder stratified charged and lean combustion GDI engine, and the spray model was validated. Based on this, numerical simulation of mixture stratified combustion was performed in a gasoline direct injection (GDI) engine with AVL FIRE. The effects of different injection timings on the mixture quality near the spark plug were analyzed and the results...
Corncob is combusted in a bench-scale atmospheric fluidized bed. Inductive Coupled Plasma Spectrometer (ICP-AES) is used to detect alkali content which moved into gas or remained in bed material in order to study the effect of bed temperature and air excess coefficient. The results show that bed temperature is the major factor on alkali migration, when bed temperature increases, alkali content into...
Micropump is one of the key components of MEMS, which has been used widely in many fields. This article focused on the review of micropumps driving and controlling and the application for micro power systems including microturbomachinery, micro fuel cells and microthrusters.
Liquefied Natural Gas (LNG) is being developed as a transportation fuel for transit buses, to lessen the dependency on oil and to reduce greenhouse gas emissions. But LNG is hazardous because of its temperature, the possibility of asphyxiation and of course the fire risk. This paper describes the use of Fluent, a widely-used commercial CFD code, to simulate the dynamics of spills from LNG bus fuel...
The borderline catalyst used to On Board Diagnostics (OBD) system was prepared by combined sedan road aging test and bench quickly aging experiment by using Liquefied Petroleum Gas (LPG) fuel. Two OBD diagnostics methods of three- way catalyst based on oxygen storage capability, dual oxygen sensor and rare oxygen sensor method, were compared using on engine bench experiment and integral sedan test...
Biomass direct chemical looping (BDCL) process has the potential to thermochemically convert biomass to hydrogen/synthesis gas and/or electricity with high efficiency and CO2 capture. BDCL gasification involves the use of an oxygen carrier which transfers oxygen from air to biomass to convert the biomass into synthesis gas, and the traditional gasifying agents, such as oxygen enriched air or high...
Fuel cells are highly efficient and environment friendly. China are studying and developing these technologies actively. Presents the developing history of fuel cell in China, then fuel cell technologies in China are discussed in detail, including proton exchange membrane fuel cell (PEMFC), solid oxygen fuel cell (SOFC), melt carbonate fuel cell (MCFC) and alkalescency fuel cell (AFC). A prospect...
This paper proposes a new objective function for solving the optimal management of MicroGrid (MG) problem. This objective function aims to minimize MicroGrid's operating cost as well as the emissions of atmospheric pollutants while constraining it to meet the load demands. Some Objective constraints are presented in this paper for the safety of MG system. Moreover, the particle swarm-based-simulated...
Energy density and power density are two of the most significant specifications for a fuel cell system. Generally speaking, energy density should be derived from the fuel cell efficiency. All these performance indices are closely correlated with the control variables of the balance of plant (BOP). The present paper proposes an optimization algorithm that maximizes the fuel cell efficiency. The strategy...
CCHP (Combined Cooling, Heating & Power) system is a highly efficient and flexible way to utilize natural gas, which attracts more and more attention. Two systems are presented for a vacation village in north of china, both of which generate electricity with gas turbine and utilize natural gas as fuel. One of systems adopts Brayton cycle, and the other adopts recuperative cycle. The analysis focuses...
Using biomass for energy generation is getting increasing attention. At present, gasification of biomass is taken as a popular technical route to produce synthesized gas for application in boiler, engine, gas turbine or fuel cell. In this study, a new approach of steam reforming of biomass and glycerol for synthesized gas production has been primarily investigated in a fixed-bed reactor. The effects...
A combined influence assessment model is established based on grey cluster method in this paper to analyze the combined influence of plantation logging on the environment-resource-cost system. The modeling results show that in the process of skidding and hauling, the higher the degree of mechanization, the less the compositive consumption. Moreover, the compositive consumption of small equipment is...
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