槽式太阳能与地热能联合运行系统设计

针对已选定的槽式太阳能热发电技术和地热双循环热发电进行了深入分析,研究了系统主要的技术细节。在对地热能发电和槽式太阳能热发电有了全面掌握的基础上,设计了以郎肯循环为基础的槽式太阳能地热能联合运行发电系统,并完成了算例的计算分析。将该算例同单一的槽式太阳能热电站和地热能电站进行详细比较,结果表明,联合电站的优点明显高于两个独立系统。最后,文章提出了一种新的以卡琳娜循环为动力循环的联合系统,并完成了该系统的计算分析,进一步根据计算将两种联合系统进行比较,得出卡琳娜循环联合系统较郎肯循环联合系统在各方面都有一定优势,但是实际使用中要谨慎。

基于空化水射流的有机污水净化循环系统研究——以第十八届“挑战杯”全国大学生课外学术科技作品竞赛参赛作品“水净有方”为例

该文以第十八届“挑战杯”全国大学生课外学术科技作品竞赛参赛作品“水净有方”为研究案例,探讨空化水射流技术与光催化氧化净水相结合的净水工艺,通过FLUENT仿真分析和高速摄像实验验证了喷嘴的空化性能,并以空化效果为目标进行了喷嘴的优化设计,寻求“光—水耦合”高效处理有机污水的净水工艺,最终选择100MPa的入口压力配合2mm的喷嘴进行净水,实现了“集约高效,环境友好”的有机污水净化。

BIM技术在建筑设计中的应用

随着科技的进步,人们在建筑设计中加入的科技元素使建筑给人带来安全、美观的同时,还可以为人们的舒适提供有力保障。文章阐述了BIM技术在建筑设计中的应用优势,说明了BIM技术在建筑设计中的具体应用,包括BIM技术在水循环系统设计、暖通系统设计、采光设计、电气设计中的具体应用。

干旱油田地区光伏板除尘研究与探索

随着西北油田光伏电站的快速发展和建设,其光伏工程整体建设也朝着规模化方向推进,而光伏板除尘就成为光伏电站发展的重要一环。本文针对西北油田光伏电站的实际情况,详细分析了光伏电站在适用环境下不同除尘方法的优缺点,提出了单井分布式光伏、集中式光伏的光伏电站水循环系统设计和高压水射流冲洗方案,以期为同类型的光伏电站除尘工作提供参考思路。

太阳能光热发电中导热油结焦机理与清洗技术的研究

介绍了太阳能光热发电系统的组成,设计开发了槽式光热发电站中导热油循环系统的工艺流程,给出了导热油循环回路系统中注油和排油的方法。研究了太阳能光热发电中导热油结焦积垢的机理,分析了导热油结焦积垢清洗最常用的两种方法,即无机清洗剂清洗和有机清洗剂清洗,最后总结了有机清洗剂的清洗机理和清洗效果。

The Research of Project Evaluation System of R＆D Based on Cycle Economy

The evaluation system of R＆D project beforehand, in the course and afterwards embodies the principle and standard of the cycle economy, which can not only avoid the negative effects caused, by the utilization of the achievements of R＆D project in the industry but also point out the direction and criterion of R＆D activities for the enterprises, which also provides the ＂model＂ that can be used for reference for maintaining the durable competitiveness of the enterprises.

Parameters and Trajectory Overall Optimization Design of the Combined Cycle Engine Reusable Launch Vehicle

Reusable launch vehicle is an important way to realize fast,cheap and reliable space transportation.A combined cycle engine system provides a more efficient and flexible form of power.The investigation on the research status of the combined cycle engine technology,including basic principle,research programs and classification of structure is firstly discussed in this paper.Then the bilevel hierarchical and integrated parameters/trajectory overall optimization technologies are applied to improve the efficiency and effectiveness of overall vehicle design.Simulations are implemented to compare and analyze the effectiveness and adaptability of the two algorithms,in order to provide the technical reserves and beneficial references for further research on combined cycle engine reusable launch vehicles.

System Design and Analysis of Hydrocarbon Scramjet with Regeneration Cooling and Expansion Cycle

A new expansion cycle scheme of the scramjet engine system including a hydrocarbon-fuel-based(kerosene)regenerative cooling system and supercritical/cracking kerosene-based turbo-pump was proposed in this paper.In this cycle scbeme,the supercritical/cracking kerosene with high pressure and high temperature is formed through the cooling channel.And then,in order to make better use of the high energy of the supercritical/cracking fuel,the supercritical/cracking kerosene fuel was used to drive the turbo-pump to obtain a high pressure of the cold kerosene fuel at the entrance of the cooling channel.In the end,the supercritical/cracking kerosene from the turbine exit is injected into the scramjet combustor.Such supercritical/cracking kerosene fuel can decrease the fuel-air mixing length and increase the combustion efficiency,due to the gas state and low molecular weight of the cracking fuel.In order to ignite the cold kerosene in the start-up stage,the ethylene-assisted ignition subsystem was applied.In the present paper,operating modes and characteristics of the expansion cycle system are first described.And then,the overall design of the system and the characterisitics of the start-up process are analyzed numerically to investigate effects of the system parameters on the scramjet start-up performance.The results show that the expansion cycle system proposed in this paper can work well under typical conditions.The research work in this paper can help to make a solid foundation for the research on the coupling characteristics between the dynamics and thermodynamics of the scramjet expansion cycle system.