Research of Energy-saving Control of Oil-well Power Heater Based on RNN Neural Network

For the beam pumping unit,the power consumption of oil-well power heater accounts for a large part of the pumping unit.Decreasing the energy consumption of the power heater is an important approach to reduce that of the pumping unit.To decrease the energy consumption of oil-well power heater,the proper control method is needed.Based on summarizing the existing control method of power heater,a control method of oil-well power heater of beam pumping unit based on RNN neural network is proposed.The method is forecasting the polished rod load of the beam pumping unit through RNN neural network and using the polished rod load for real-time closed-loop control of the power heater,which adjusts average output power,so as to decrease the power consumption.The experimental data show that the control method is entirely feasible.It not only ensures the oil production,but also improves the energy-saving effect of the pumping unit.

The Design and Aanalysis of a New Style Oil-saving Device

For the sake of saving energy and reducing emissions, this paper will introduce a design of oil-saving device for the simple cylinder 250 water-cooled petrol engine. The oil-saving device is based on the principle of heat transfer and capture. By raising the heat of the oil mist up to 50℃, absorption and gathering the released gas from the opening valve, the engine can achieve fuel-saving purpose. The oil-saving device was made by 3D print technology. UG8.0 and ANSYS workbench were used in the design of device.

空气悬架系统的理想孪生动挠度跟踪控制策略

为解决车辆主动悬架系统减振效果与控制能耗间的矛盾,基于“数字孪生、以虚控实、节能减振”理念,提出了主动空气悬架系统的理想孪生动挠度跟踪控制策略。首先,以车辆座椅主动空气悬架系统为例,利用准零刚度系统构建了真实空气悬架系统的理想数字孪生体,同时建立了该孪生体的参数匹配设计方法;然后,以空气弹簧气体压力控制为节点,设计了外环位置模糊非奇异快速终端滑模控制器,以及考虑空气弹簧充放气过程中电磁阀非线性流量特性的内环气压控制器,进而实现真实悬架系统对实际激励下孪生体动挠度的跟踪;最后,通过台架模拟实验与整车平顺性仿真实验,对所提控制策略的有效性与先进性进行了验证。结果表明:与以降低加速度为控制目标的传统控制策略相比,所提策略在随机路况下的座椅垂向振动加速度均方根更小且控制能耗均方根最小降幅达65.0%,冲击路况下座椅垂向振动剂量也更小且主动控制力最大降幅高达45.5%。所提策略性能明显优于传统策略,能在有效提高悬架系统减振性能的同时大幅降低主动控制能耗,有效解决了上述矛盾,可推广应用于各类主动悬架系统,为节能减振提供新的研究思路。

汽油发动机稀薄燃烧技术特性分析与应用

发动机节能技术一直是汽车制造厂商和科研工作者研究的重点,其中发动机稀薄燃烧节能技术最具有代表性。利用文献分析法综述了汽油发动机稀薄燃烧技术的机理、技术实现途径及应用情况,发现发动机稀燃技术具有明显的节能效果,可为相关领域科研工作者提供理论参考。

基于网络药理学探讨速效救心丸联合复方丹参注射液治疗不稳定型心绞痛的机制

目的采用网络药理学和分子对接技术探索速效救心丸联合复方丹参注射液治疗不稳定型心绞痛的分子调控机制。方法中药系统药理学数据库与分析平台(TCMSP)、中医药百科全书平台(ETCM)、中药分子机制研究的生物信息学分析工具(BATMA-TCM)、本草组鉴平台(HERB)数据库结合成分检测文献筛选速效救心丸联合复方丹参注射液的成分和靶点,同时GeneCards、DisGeNET和OMIM数据库获取不稳定型心绞痛的靶点。用于进行基因本体和京都基因与基因组百科全书富集分析。结果本研究筛选出川芎嗪、丹参酮ⅡA、丹酚酸B等33种主要活性成分,得到前列腺素内过氧化物合成酶2、白细胞介素6(IL-6)等32个速效救心丸联合复方丹参注射液治疗不稳定型心绞痛的靶点。分子对接结果证明,本研究获得的活性成分与其对应的不稳定型心绞痛靶点间均有较高的亲和力。结论速效救心丸联合复方丹参注射液通过川芎嗪、丹参酮ⅡA、丹酚酸B等活性成分靶向IL-6、白细胞介素1β(IL-1β)、肿瘤坏死因子(TNF)等关键靶点发挥治疗不稳定型心绞痛的功效。

Strategies for Introducing Energy Saving Idea into Residential Planning and Design in Urban and Rural Areas of China

Currently,energy saving design has been conducted on single building but not on the whole residential community in urban and rural areas.So,the paper has proposed energy saving measures for residential planning from the perspective of site selection and layout of buildings.Specific measures are as follows.Firstly,buildings should be constructed on the sunny side and leeside;secondly,buildings on the south should be lower than those on the north;the east side of the building should be open while the west side should be closed;thirdly,climate protection unit should be set;fourthly,buildings should be of northsouth direction primarily,and the main room should be set on the east side and the assistant rooms or passage on the west side in the buildings of east-west direction;fifthly,it should select compact and wellarranged households and the units should not be combined in point and dislocation and jointing.

Experimental study and energy saving analysis of a novel radiant ceiling heating system

In order to have an in-depth understanding of the metal ceiling radiant panel with capillary tubes, a radiant ceiling heating system is constructed to study the actual heating performance and thermal comfort by experiments. In addition, the energy saving potential of the novel heating system is discussed in terms of the COP （coefficient of performance） of the ground source heat pump and the exergy efficiency of the radiant terminal. The results indicate that the heating system shows high thermal stability and thermal comfort. When the system reaches a stable condition, the radiant heat transfer accounts for 62.7% of the total heat transfer, and the total heat transfer can meet the heating demands of most buildings. Compared to a radiant floor heating system, it offers advantages in a shorter preheating time, a lower supply water temperature and a stronger heating capability. The COP of the ground source heat pump is increased greatly when the supply water temperature is 28 to 33 ℃, and the exergy efficiency of the metal ceiling with capillary tubes is 1.6 times that of the radiant floor when the reference temperature is 5 ℃ The novel radiant ceiling heating system shows a tremendous energy saving potential.

基于SAVEE方法的南沙群岛权益和战略价值评价

论文采用新型评价方法——SAVEE定量研究了南沙群岛的权益和战略价值。研究选取南沙群岛中五个有代表性的岛礁及与其权益和战略价值相关的评价因子,计算出各因子的价值及综合价值,获得评价结果。结果显示,五个岛礁具有不同的权益和战略价值,其中以太平岛最高。定量化的评价结果较好的反映了南沙群岛岛礁价值的差异性,与实际情况相符,证实了该方法在海岛价值评价中的可行性。

Energy saving analysis of a hybrid ground-coupled heat pump project

A hybrid ground-coupled heat pump（HGCHP）project in Nanjing,China is chosen to analyze the building energy-consumption properties in terms of different control strategies,building envelope and the terminal air-conditioning system.The HGCHP uses a supplemental heat rejecter to dissipate extra thermal energy to guarantee underground soil heat balance.The software EnergyPlus is employed to simulate the project and design the heat flow of the cooling tower and the borehole heat exchanger（BHE）.Then two feasible control strategies for the cooling tower and the borehole heat exchanger are proposed.The energy-saving potential of the building envelope is analyzed in terms of the surface color of the wall/roof.With the same terminal system,it is found that in the cooling season the heat flow of the insulated building with black wall/roof is 1.2 times more than that with white wall/roof.With the same insulated building and gray wall/roof,it is concluded that the heat pump units for a primary air fan-coil system show an annual energy consumption increase of 44.7 GJ compared with a radiant floor system.

Application of Automatic Water-saving Irrigation System in Roof Gardens

Based on the special site conditions of roof gardens,it was put forward to introduce automatic water-saving irrigation system into the roof garden constructions,such as the solar energy and microcomputer auto water-saving irrigation system,aiming to solve the photosynthetic noon break phenomenon of plants and relieve the stress from high temperature.

滴灌棉田节水灌溉系统控制策略研究

针对传统棉田节水灌溉系统灌溉精度低、运行稳定性差的问题,设计了一种基于Fuzzy-PID控制的棉田节水灌溉控制系统。系统通过土壤湿度传感器采集棉田的实时土壤湿度作为控制决策依据,结合专家经验制定模糊控制规则,设计了Fuzzy-PID控制器,并在Simulink中对系统进行建模与仿真试验,对Fuzzy-PID控制方法和常规的PID控制方法进行仿真分析。仿真曲线表明:与传统PID控制器相比,Fuzzy-PID控制的稳态时间减少了约7.3 s,超调量减少了5.65%。试验结果表明:模糊PID控制方式调节精度和稳态性能更好,可及时调整土壤湿度,进行适时、适量的灌溉,一定程度上提高了系统灌溉精度,可以满足大田棉花灌溉需求。

大型省水船闸省水池布置形式研究

针对建设场地局限且上下游水位变幅较大时,传统的省水船闸省水池布置形式(开敞式和封闭式)均不能较好地适应设计需求的问题,进行省水池新的布置形式研究,提出组合式布置的概念,即多个省水池中的部分省水池相对另一部分省水池沿水平方向上错位设置,且多个省水池中的部分省水池相对另一部分省水池沿竖直方向上也错位设置。实践证明,采用该布置形式,既能较好地适应狭窄的场地条件、又能适应上下游较大的水位变幅,很好地满足设计需求。依托工程采用该布置形式并已进入施工建造阶段,该技术可为类似条件的省水船闸设计提供参考。

城市环卫车垃圾收运调度系统优化

为了提高城市环卫车垃圾收运调度效率和降低总成本,基于环卫车参数、道路状况等模型假设,建立城市环卫车垃圾收运调度系统数学模型,并提出城市环卫车垃圾收运调度系统优化方案;通过应用节约算法得到行驶总路程最小的子路径集合,将子路径任务合理分配给所有环卫车,以达到行驶总路程最小和任务均衡性最高的任务分配优化目标;以济南市市中区10个环卫区域道路网络的环卫车实际调度数据作为算例,综合评估所提出的系统优化方案,分析所提出系统优化方案的可行性和有效性。结果表明:与以顺序优先原则调度分配的优化前方案相比,利用所提出的系统优化方案分别进行中小型、大型环卫区域道路网络的环卫车垃圾收运调度,所需环卫车辆数分别减少39.03%、18.78%,环卫运营成本分别降低约2.8×10^(4)、5.05×10^(4)元,平均行程利用率分别达到97.4%、93.6%,不仅可以显著降低环卫经济成本,而且能够极大地提高环卫车的作业效率;在同等任务量时,利用所提出的系统优化方案分配任务,环卫车配置数量减少3辆,任务分配优化程度提高到85.16%,实现了环卫车之间的任务均衡,从而带来良好的经济和社会效益。

节能型海水液压浮力调节系统

针对现有浮力调节系统能耗高、需配置额外液压源等问题,提出了一种节能型海水液压浮力调节系统,设计了由伺服电机驱动的集成式控制阀组,通过齿轮协同布置、滑动丝杠自锁、螺旋旋向分配等方案实现了电机短时运转控制多个截止阀启闭,完成压载水舱注、排水功能的控制,极大地减少了潜水器能源消耗。此外,通过深海高压环境模拟试验装置,开展浮力调节系统注、排水流量和能耗测试,验证了该浮力调节系统的节能性和有效性,同时满足水下4 km作业深度的要求。

Low-carbon and Energy-saving Designs Preserving Primitive Ecological Conditions——With the Planning of Ancient Banyan Park in Mengshan County,Guangxi,China as a Case Study

It was proposed that park planning should be based on local economic development,should focus on the preservation of primitive ecological conditions and the application of low-carbon and energy-saving concepts.The planning of Ancient Banyan Park in Mengshan County by following the principles of respecting local history and culture,improving functions and supporting facilities,human-centered,overall planning and all-around consideration,respecting characteristics of the local area(the planning site),satisfying operation requirements of the park,applying low-carbon and energy-saving concepts,and avoiding over-engineering,aimed at protecting natural images of the park,primitive history,culture and characteristics of the local area and providing a space for local residents' various activities.Modern aesthetic forms were combined,cultural connotation of natural environment stressed to build a landscape space system of the Ancient Banyan Park that matches well with environment of the planning site.The park was designed into 4 functional areas:sport area,fitness plaza area,garden recreational area and ancient banyan cultural area.Different functions of these subareas were taken into consideration to create conservation-minded garden landscapes which were both independent and unified.

Saving Paper

In the 13th century,the famous Italian traveller,Marco Polo,travelled a long way to China.During his stay in China,he saw many wonderful things. One of the things he discovered(发现)

基于全局系统的混凝土泵车功率匹配研究

为降低混凝土泵车的能量损失,针对混凝土泵车发动机燃油消耗率和变量泵效率提出一种节能控制策略。首先利用台架试验数据分别建立发动机燃油消耗率模型和变量泵效率模型,针对以节能为驱动的全局系统功率匹配进行控制策略研究。然后在策略中采用基于遗传算法的全局动力系统节能参数匹配方案,合理设置分动箱速比,以全局系统的经济性为优化目标,通过合理调节发动机转速和变量泵排量两项参数,使发动机和变量泵能够同时工作在经济区。仿真结果表明,新型控制策略燃油消耗率有效降低,节能效果明显,对混凝土泵车的节能技术研究具有积极意义。

风光互补灌溉技术在缺水地区农业灌溉中的应用

水资源短缺和电网线路不贯通成为制约很多农业生产区发展的关键因素,在缺水地区,农业灌溉技术的革新尤为重要,风光互补灌溉技术作为一种新型、环保的灌溉方式,结合了太阳能和风能在时间上的互补性,形成了具有较高性价比的新能源发电系统。该文风光互补技术应用于缺水地区农业灌溉为出发点,分析了关键技术的实施思路以及现阶段应用情况,分析了技术应用的关键阻碍因素,并提供了解决和发展建议,对于推动农业缺水地区经济发展和绿色转型具有重要意义。

工业企业水平衡测试与节水分析

企业水平衡测试是促进工业节水的一项行之有效的方法,本文对某工业企业的取用水状况及水源之间的转换、回收利用的关系进行分析,将用水过程细化到单台设备,同时分工序、分厂区进行量化汇总,对可完善之处提出合理化的分析和建议。为健全企业用水档案,弥补和完善供用水基础资料,也为企业今后有序生产发展,提升用水管理水平提供依据和参考资料。

Saving Paper

In the 13th century,the famous Italian traveller,Marco Polo,travelled a long way to China.During his stay in China,he saw many wonderful things. One of the things he discovered(发现)