Two Types Modules for the Boiler Attached to 330 MW Unit

Boiler is an important facility in power plant , the safety and economy of unit is affected by it. Studying the dynamic of boiler can improve the knowledge about boiler , which is important for. Features of MMS are introduced based on MMS simulation setting, and the real time capable module and non real time capable module are compared from principle. Real time capable dynamic model of boiler and non real time capable dynamic model of boiler of 330 MW unit are established . The experimental results show that the dynamic process of two type model accords with the mechanism of the object , at the same time, the validity of real time capable module is discussed .     

Model Building and Simulation for Subcritical Pressure Boiler

In order to meet the demand of large scale boiler design and operating optimization, this paper establishes the dynamic mathematic model for domestic 600MW subcritical pressure boiler. MMS software is adopted in the whole process from modeling to simulation. This software make process simple and quick. This model is based on modulariza- tion and the comprehensive physical and chemical process in boiler is considered. Simulation result shows that the re- sponses of this model under different disturbance are coincident to mechanics analysis. The simulation result under ste Pdisturbance can be used to analyze unit changes and provide some guide and it also can supply performance reference data to boiler design.     

Modeling of the Break Simulation for Both Single and Two Phase Conditions

Based on the Moody model and complied with the modular modeling ideology and principle,a general break simulation model has been proposed for both single and two phase conditions in a thermal liquid pipe.This model now is used to develop the training simulator a power plant.     

Modular Design Base on Variety Theory

Variety Design not only support to short down development time, and cut down development cost, but also support to response marketing rapid, is a kind of modern design theory which apply on Mass Customization. In some way, Variety Design is a kind of design that integrates standard design and modular design, and Variety Design object is high cost and universal parts that among platform. The authors discuss the modular design role and the different between integral design, promote the method and the step of modular design, so change the low cost parts design, and give an new product based on the platform. Based on this model, they not only save the cost of develop new product, but also save time, achieve advantage which Mass produce process.     

Preliminary Analysis of Modular Vertical Greening in Office Spaces in Northeast China

Environmental problem is a key problem for modern society. This paper analyzed indoor environment of the offi ce space in northeast China, explored the plants suitable for modular vertical greening in the offi ce space, and the key points for selection, and further analyzed the benefi ts of modular vertical greening for the indoor offi ce environment and the process fl ow. New technologies in modular vertical greening can be applied to improve the quality of indoor environment, and enhance the active atmosphere of indoor environment.     

Simulation Modeling and Simulation Analysis for the Boiler Attached to 360 MW Unit

Using modular simulation technique,a mathematical model for the combustion and air/gas system of the W shape flame boiler is presented.The experimental resulats show that.The dynamic process accords with the mechanism process of the object.     

Optimal Load Curtailment in Bulk Power System Reliability Evaluation

This paper studies the question for considering optimal load curtailment in bulk power system adequacy evaluation. A minimization model of load curtailment is utilized for the contingency states which may have load curtailment. In order to calculate realistic bus indexes, two practical load curtailment philosophies are incorporated in the minimization model of load curtailment, which is achieved in computer program developed for bulk power system reliability evaluation. The minimization model of load curtailment, correlated algorithms, and flow chart of program are given in this paper. The effectiveness and availability of the model are verified from two case studies.     

Fast Animation Display of Large Structure with Multistep Modes

The method that the MASM assembler is interlaced to the MS-FORTRAM 5. 0 is used to store some step structural mode drawings in the designated disk file through their visiting VRAM,which are then restored in it when needed in order to realize the quick animation display of the mode. This method solves the problem of insufficient memories in storing multistep structural mode drowings with the ordinary method. As a functional modular of finite element analysis programs SAPS and ADINA transplanted to a microcomputer,the modular programed with the above method can quickly display the animation of large structure with multistep modes.     

Innovation and Development in Modular Industrialised Housing

The total requirement for affordable new housing in the world is extremely large, and in many countries presents major challenges to local building industries which-if they continue to use traditional building methods-will be unable to supply what is needed in terms of quantity, quality, performance or cost. In Europe, since the end of the Second World War, there have been numerous attempts to mass produce housing-mainly in order to build faster, overcome skills shortages and cut costs. The majority of those methods were based on the use of concrete and, for a variety of reasons, in the UK many of them performed badly [almost half the concrete tower blocks built in Britain the 1960s and 70s have already been demolished or are scheduled for demolition]. In the mid 1970's the Greater London Council [GLC]-already disenchanted by their experience of precast concrete building methods-experimented with volumetric/modular steel housing, and built a demonstration block of modular flats in the Borough of Hackney. The results were highly encouraging, but the programme was terminated when the GLC was closed down. However, that modular housing work attracted the attention of several large hotel chains that then used modular building techniques to construct several hundred budget price hotels in the UK. Today attitudes towards modular building methods have changed considerably, particularly among major developers. Most new hotels now incorporate pod bathrooms and large numbers of university students are being accommodated in new modular halls of residence. New material combinations and module production techniques have further increased the many advantages offered by modular construction, particularly in terms of higher acoustic performance and lower cost. The success of recent high profile modular housing projects in the UK and other EC countries bodes well for modular housing in Europe, and the PATH advanced housing technology initiative in the USA suggests modular is also poised to take off there in a big way. Modular housing could soon become a major international industry.     

A face recognition method based on modular PCA and SVD

In order to solve the problem that modular PCA method is sensitive to translation, rotation and other geometric transform, a face recognition method based on modular PCA and singular value decomposition (SVD) is proposed. The PCA features of sub image and SVD features are extracted respectively. The distance measure that fuses information of modular PCA and SVD is obtained. Minimum distance classifier is used to face recognition. Experimental results on ORL human face database show that the proposed method can obtain higher recognition rate.     

The Fortran simulation translator, a simulation language

The Fortran simulation translator (FST) is a simulation language, that enables the researcher to develop concepts, in terms of mathematical equations, e.g. about agro-ecological systems, that are converted in a Fortran program with data files (Fortran simulation environment, FSE). This generated Fortran program is well-structured and can be executed using both user developed and standard mathematical library subroutines (e.g. IMSL). The possibility to use the generated Fortran program as a starting point for further model development makes FST a valuable tool, both for research and education.     

THE OPTIMAL DESIGN AND ENGINEERING APPLICATION OF DISTRIBUTION

This paper introduces the metod of optimal design of municipal water distribution,The main points are the theory,mathematical model,program frame figure and example in practice of the optimal method of hydraulics.The program is applicable to the design and calculation of the pipe network in a city. It gives a simple and convenient calculation method for multiple-scheme design and scheme cmparison of water supply system.     

Module Design of Refrigerant Themodynamic Properties Calculation for Simulation of Refrigeration and Air Condition System

This paper constructs a model of refrigerant thermodynamic properties calculation for simulation of refrigeration and air condition system based on the parametric equations of state of refrigerant. The Visual C++ 6.0 language is used to develop this model, which has a friendly user interface (UI). This program is easy to learn and use and it has reliably function. Compared with the data provided by the standard graphs and tables of refrigerant thermodynamic properties, the calculation results of this model have certain precision and meet the expectative requirements.     

A MODEL SYSTEM OF A LONG-TERM PROGRAM OF EDUSATION DEVELOPMENT AND ITS APPLICATION

This paper studies a long-term program of education development in the light of the theory and method of system engineering.A complete mathematical-Simulant model system is used to describe the internal regularity of an edu-cation system inside a social-economic tystem,and to put forward a set of efficient method for education development programming.The mathematical-simulant model system dis-cussed in the paper is put to practical use in a regional education programming.     

STATE VARIABLE METHOD FOR DYNAMIC SIMULATION OF HVDC SYSTEMS

A flexible mathematical model used for dynamic simulation studies of HVDC systems which is based on the stale variable method is presented, and the correspongding computer program has been implemented. Generality, easy to use, and suitable to run on microcomputers are the main features of the model and the computer program. Therefore the model is easy to be extended for application. An example is given in the paper to verily the coneclness of the model and the program.     

Application of Modflow in Sustainable Exploration of Geothermal Water at Xaoquan of Chongqing

On the basis of sufficient discussion of hydrogeologic condition of geothermal water in the Xaoquan area, authors a mathematical is studied with MODFLOW model is established, and then the geothermal water is studied with MODFLOW program. Andthe mathematical model is identified. The authors compare the simulative water level with actual water level. The MODFLOW program can study geothermal water,when the simulative water level approximated to actual water level, and the mathematical MODFLOW model is right. Geothermal water under condition of different exploitation is stndied with the MODFLOW program. Sustainable exploitation is achieved.     

Numerical Simulation and Analysis of Control Rod Dropping of Qingshan 300 MW Nuclear Reaction

This paper provides a theoretic basis to analyze the mechanism of control rod dropping and a solution method to solve the process of dropping. The authors analyze the effect of different forces acting on the control rod in detail. A mathematical model is built and a program is written to solve the process of downward motion. Finally, the model and relative coefficients of the model are modified according to the experimental data. The modified model can well simulate the process of dropping of the control rod, which gives a powerful proof to the accuracy of the model.     

橡胶树光合与干物质积累模拟模型研究

基于单叶光合速率的光响应模型和冠层光的分布规律,通过积分形式,构建了橡胶树冠层光合作用模拟模型。模型充分量化了光通量密度、温度、叶面积指数、单叶最大光合速率、光合作用特征参数、消光系数、群体反射率等因子对橡胶树冠层光合速率的影响。在分别确定了叶片和木质器官与环境因子作用关系的基础上,构建了橡胶树的群体呼吸作用模型。在橡胶树冠层的光合作用模型和群体呼吸作用模型的基础上,整合成橡胶树干物质积累模拟模型。模型经初步检验,结果表明模拟值与观测值吻合度较好,模型不仅具有较强的机理性而且具有较高的预测性和实用性。     

THE CALCULATION OF ALONGWIND RESPONSE FOR TALL BUILDINGS

This paper investigates the dynamic response of tall buildings subject toalongwind loading.According to the assumptions of the fundamental parame-ters,the function of the first vibration mode and that of the mass model,thecomputer program AWCTS is compiled.The availability of the procedure in thispaper is verified through practical calculations and comparison of results.     

Viscosity Calculating Model of Iron-bath Smelting Reduction Slag

It is thought that the smelting reduction is one of the advanced technology for metallrugical industry. The constitutes and characters change continuously because the charging is loaded periodically. The influence of slag viscosity is important for smelting process. The foundation of viscosity calculating model is propitious to rapidly forcast the slag viscosity. The viscosity calculating model of melting slag is founded according to the ion theory and the characters of iron-bath smelting reduction slag, the calculating program is finished. The result indicates that the calculating value and the measuring value is approaching. This model can be applied to calculate or forecast the iron-bath smelting reduction slag viscosity.