基于SOA的测井解释平台中间层设计

CifWeb的目标是开发跨平台的新一代测井解释软件平台,并实现勘探开发一体化和网络单机一体化。将基于SOA的测井解释平台中间层作为CifWeb的网络化解决方案,依据广义测井曲线理论,采用开放的Java技术,基于SOA方式并结合最新的Glassfish、Spring及JAX-WS等技术,用消息传输优化机制进行优化。实现了高性能、与平台和语言无关的面向服务接口,为Cif-Web提供了强大的网络化功能。     

建筑形状比对办公建筑冷(热)负荷的影响分析

基于DeST软件,利用正交试验法对办公建筑室内的冷负荷影响因素进行了分析,得出室内冷(热)负荷随着形状比变化的曲线,并应用曲线分析负荷变化趋势,找出冷(热)负荷随着形状比变化的具体关系式,可依此确定最佳建筑节能形式的方案。     

复杂循环水系统经济运行方案的优化设计及软件开发

以金竹山电厂复杂循环水系统为例,建立循环水系统的简化物理模型以及各主要设备的数学模型,对该厂复杂循环水系统经济运行方案进行最优化设计。在Microsoft Visual Basic 6.0环境下,开发出循环水系统经济运行指导系统,根据机组运行方式及季节的变化合理安排江边泵房和Ⅱ泵房循环水泵的运行,实现循环水泵的经济调度。     

组态王在火电机组热经济性分析系统中的应用

针对大型热力发电厂性能分析系统可移植性较差的现状,介绍了一个新型的通用性强的在线火电机组热经济性分析系统。本系统采用组态王组态软件设计。简述了组态过程,给出了软件结构,将热耗计算程序挂接到该组态软件中,运行良好,结果正确。     

气泡雾化喷嘴内部及出口下游的数值模拟

采用FLUENT软件对喷嘴内部气液两相混合以及喷嘴下游雾炬场进行了数值模拟,主要模拟了喷嘴内部气液两相的浓度分布、喷嘴内部的压力分布、下游雾炬场的速度矢量分布、颗粒直径大小分布,并对模拟结果进行了分析,模拟结果对以后的两相流以及雾化的研究具有一定的指导意义。     

Feasibility analysis of stand-alone renewable energy supply options for a large hotel

This paper provides a feasibility analysis of renewable energy supply (RES) for a stand-alone supply large-scale tourist operation (with over 100 beds). The analysis utilises the power load data from a hotel located in a subtropical coastal area of Queensland, Australia. The assessment criteria of the analysis are net present cost, renewable factor and payback time. Due to the limited number of RES case studies in tourist operations and the absence of studies for large resorts, requiring facilities with a higher degree of comfort such as air-conditioning, it is not possible to establish with confidence the viability of RES in this industry. The specific operational characteristics of the tourism accommodation sector, such as 24-h operation, comfort provision and low tolerance for failure necessitates a separate assessment of RES viability for this sector, rather than relying on similar assessments from other commercial sectors. This study uses RES assessment software tools, HOMER (National Renewable Energy Laboratory, US) and HYBRIDS (Solaris Homes, Queensland, Australia), in order to compare diesel generator-only, RES-only and RES/diesel hybrid technologies. HOMER uses hourly load data, whilst HYBRIDS uses average daily energy demand for each month. The modelling results demonstrate that RES, in principle, has the potential to adequately and reliably meet power demand for a stand-alone large-scale tourist accommodation. Optimisation modelling demonstrates that 100% of power demand can be supplied by a RES-only configuration. A hybrid diesel/RES configuration provides the lowest NPC result with a resultant RF of 76%. In comparison to the diesel generator-only configuration, NPC is reduced by 50% and Greenhouse Gas (GHG) emissions by 65%. The payback time of the hybrid RES scenario is 4.3 years. Results indicate that wind energy conversion systems (WECS), rather than photovoltaics, are the most economically viable RES for large-scale operations. Large-scale WECS (over 1000 kW) are more efficient and economical than multiple small-scale WECS (0.1–100 kW). Both modelling tools produced similar results, with HYBRIDS producing on average slightly higher NPC results than HOMER. The modelling and resulting data from the analysis indicate that RES is technically feasible and economically viable as a replacement for conventional thermal energy supply for large-scale tourist operations dependent on stand-alone power supplies.     

Combustion characteristics of solid waste biomass,oil shale,and coal

In this study, a developed two-dimensional mathematical model was used to represent the physical model of the combustion process of olive cake and date seed, and solve the governing equations using finite-volume method. The simulation was performed using ANSYS/Fluent software in order to estimate maximum temperature, heating values and pollutants concentrations. The obtained results were compared with experimental results, and corresponding values of oil shale and coal. The experimental work of direct burning of olive cake and date seeds was performed using an existing circulated fluidized bed (CFB) unit.

It was found that the adiabatic flame temperatures were 1380 K and 839 K for olive cake and date seed, and 2260 K and 1080 K for coal and oil shale, respectively. The experimental results showed that the maximum temperatures were 1126 K and 723 K for olive cake and date seed, respectively. The lower heating values were 19,500 kJ/kg and 16,400 kJ/kg for olive cake and date seed, and 29,000 kJ/kg and 7000 kJ/kg for coal and oil shale, respectively.

Thus, biomass such as date seed and olive cake may be used as an alternative fuel in electrical power plants in olive- or date-producing countries, which may save 40% of fuel cost.     

Modeling considerations in seismic assessment of RC bridges using state-of-practice structural analysis software tools

The increasing awareness of the general society toward the seismic safety of structures has led to more restrictive performance requirements hence, many times, to the need of using new and more accurate methods of analysis of structures. Among these, nonlinear static procedures are becoming, evermore, the preferred choice of the majority of design codes, as an alternative to complete nonlinear time-history analysis for seismic design and assessment of structures. The many available software tools should therefore be evaluated and well understood, in order to be easily and soundly employed by the practitioners. The study presented herein intends to contribute to this need by providing further insight with respect to the use of commonly employed structural analysis software tools in nonlinear analysis of bridge structures. A comparison between different nonlinear modeling assumptions is presented, together with the comparison with real experimental results. Furthermore, alternative adaptive pushover procedures are proposed and applied to a case study bridge, based on a generic plastic hinge model. The adopted structural analysis program proved to be accurate, yielding reliable estimates, both in terms of local plastic hinge behavior and global structural behavior.     

地球化学软件PHREEQC在湿法冶金计算热力学中的应用

以加氢脱硫废催化剂中复合氧化物NiMoO4的酸碱水溶液稳定性为例, 采用PHREEQC软件进行了水溶液热力学模拟计算, 介绍了PHREEQC软件的计算过程、计算原理、计算步骤及结果分析, 并与传统手工算法进行了简单对比。相对于传统手工数学计算方法, PHREEQC具有计算效率高、简单灵活、可解决极复杂多元多相热力学问题等优点, 对湿法冶金热力学分析有很大帮助, 值得在湿法冶金热力学研究方面推广应用。     

基于C#的磨机监控系统设计

针对选矿厂磨矿过程中磨机负荷难以实现自动控制以及OPC技术数据传输存在弊端这2个问题,利用VS编程软件设计了基于C#的磨机监控系统。根据实际生产的需求以及监控系统的要求,在该监控系统中设计了设备运行状态显示,磨机运行数据曲线绘制,手动、自动、专家、优化4种控制方式,人机交互的编辑和操作菜单功能模块,以及运行数据存储等功能,同时利用C#本身拥有的串口通信技术,实现了磨机控制仪与监控计算机间的数据传输。运行效果表明,该系统满足磨机自动控制要求,并具有开发成本低,可靠性强,控制方式灵活等优点。