查询词典 air-resistance

The main work and the originality points of this dissertation could be concluded as the following parts:(1) To analyze systematically the mathematical model of LES of air flow in great space, under the case of isothermal and non-isothermal, as well as the combined action of buoyancy and strain. Some basic problems are studied about the LES application into airflow simulation of great space, such as boundary conditions, spatial difference scheme and time advancing scheme, time step etc., which creates the basis for the LES application to indoor airflow simulation.(2) Both the instantaneous and time averaged flow field of great space with multiple jets under isothermal and non-isothermal cases are explored with large eddy simulation method, and also discussed the dynamic characteristics and the law of fluidflow in the great space.(3) Based on the results of LES of the great space and the Fanger thermal comfort indexes, it is brought forward the concept of the series of dynamic thermal comfort evaluating indexes, which could be divided into thermal comfort index with time averaged properties PD, PPD, PMV, thermal comfort index with instantaneous properties IPD, IPPD, IPMV, and time averaged thermal comfort indexes TAPD, TAPPD, TAPMV, and transient situations time averaged thermal comfort indexes TTAPD, TTAPPD, TTAPMV. The differences among them and the calculation methods are discussed, and the four kinds of indexes are calculated with the thermal comfort index PD as an example.(4) Based on the LES results it is discussed the hot air stratification phenomena in air-conditioned buildings in the case with air supply and return registers on the ceiling and the case on the sidewall. The fundamentals of the hot air stratification are studied and the relations of estimating hot air stratification are brought forward.(5) With the advanced apparatus such as hot wire film anemometer IFA300 and laser particle field anemoscope, corresponding model test and site measurements have been done, which are compared with the simulation results and LES is proved a very promising method in air flow simulation indoor.

本文主要工作既创新点体现在以下几个方面：(1)系统分析了等温、非等温和考虑剪切力与浮升力综合作用的高大空间大涡模拟数学模型，并研究了高大空间大涡模拟在室内气流仿真应用中的一些基本问题，如边界条件、空间离散格式和时间推进格式、时间步长选择等问题，为大涡模拟在室内气流计算中的广泛应用打下了基础；(2)首次用大涡模拟方法研究了高雷诺数下高大空间多射流在等温、非等温情况下的瞬时流场和时均流场分布，并探讨了多射流流场的动态特性和流动规律；(3)基于大涡模拟的动态仿真结果和Fanger的热舒适指标，首次系统地提出了动态热舒适评价指标体系的概念：即基于时间平均参数的热舒适指标PD、PPD、PMV；基于瞬时参数的瞬时热指标IPD、IPPD、IPMV；基于时间平均热舒适指标TAPD、TAPPD、TAPMV；以及沿行动迹线的时间平均热舒适指标TTAPD、TTAPPD、TTAPMV，并分析了四类热舒适指标的差异性和计算方法，还以PD值为例对四类指标分别进行了计算；(4)基于数十种工况下空调房间大涡模拟的结果，研究了空调建筑上送上回和侧送侧回两种情况下热分层现象，并探讨了热分层的基本规律，首次提出了避免热分层现象的判断公式；(5)在暖通空调领域，首次使用IFA300热线风速仪、激光粒子速度场仪等先进设备，完成了与大涡模拟相对应的模型试验，并把实测结果与仿真结果进行了对比，说明LES在室内气流仿真方面是一种很有前景的方法。

Shenling has taken part in drafting the national standards: Dehumidifiers, energy efficiency limit value of the Chillers and its energy efficiency ratio grade, energy efficiency limit value of the Packaged Air Conditioner and its energy efficiency ratio grade, Rooftop Air-conditioners, Vapor Compression Cycle Chillers, For Industry and Commerce Use and Similar Purpose Chillers, Packaged Air Conditioners, Changeable Air Amount Terminal Units, Aeration Equipment for Air Energy Reclaiming, core documents of quality standards for constructing project products, Positive Displacement Compressing Condensers, Heat Pump Chillers,Modular Air Handling Units,screw type refrigerant compressors, Purchase specification on heating Ventilating and air conditioning equipment for chemical plant.

申菱公司参与起草的产品国家标准：除湿机、冷水机组能效限定值及能源效率等级、单元式空气调节机能效限定值及能源效率等级、屋顶式空气调节机组、蒸气压缩循环冷水机组工商业和类似用途的冷水机组、单元式空气调节机、空调变风量末端装置、空气——空气能量回收通风装置、建设工程产品质量标准核心条文、容积式压缩冷凝机组、热泵热水机、组合式空调机组、螺杆式制冷剂压缩机、化工暖通空调设备采购规定。

U.S. Air Force 36th Air Expeditionary Wing commander, said White, Guam's future military strength will be greatly enhanced, Guam's strategic position is particularly important, according to the U.S. Air Force's plan, in the next 5 years to 10 years, the Air Force is expected to Guam Andersen Air Force Base to invest one billion U.S. dollars to two billion U.S. dollars of funds to expand the size of the base, which also reflects the Anderson Air Force Base in the Pacific region will become the most important U.S. air base.

美空军第36空中远征联队司令怀特表示，关岛未来的军事实力将获得极大增强，关岛的战略地位尤为重要，根据美国空军的计划，在未来5年到10年时间里，空军预计向关岛安德森空军基地投资10亿美元到20亿美元资金，扩展基地的规模，这也反映出安德森空军基地将成为太平洋地区美军最重要的空军基地。

Comparing with conventional air handling process, the liquid desiccant air-conditioning system can dehumidify air without cooling down to its dew point. Meanwhile, counteraction cooling and heating can be avoided, which usually happened in conventional air handling process and led to huge energy waste. In addition, during the air handling process no condensation water separates out of the air in the liquid desiccant air-conditioning system, thus, avoid fungi thrives in moist environment of traditional air handling process. Not only being applied in dehumidification process in summer, the system can also realize humidification process in winter conditions efficiently.

与传统的空气处理方式相比，采用溶液式空气处理方式，具有如下优越性：取消了冷凝水表面，消除了霉菌等生长所需的潮湿环境；既可以对空气除湿处理，又能实现冬季对于空气的加湿处理过程；可方便调节处理后的相对湿度，不再是常规冷凝除湿方式中接近100%相对湿度的出口空气参数；避免了常规空调系统冷凝除湿后温度过低还需再热带来的冷热抵消问题；可以充分利用低品位能源如太阳能和废热实现溶液再生，节省系统电耗。

Independent new air renewal system: TBA TOWER filtrates and deeply dehumidifies air in the mansion, sending dry, clean and bright fresh air to the room through independent new air renewal system, thus escaping the danger of emergence of legionnella under normal air-conditioning system, greatly increasing oxygen in the air, cleanness, flux and comfort, elevating the air health quality in the room.

独立新风换气系统：TBA TOWER通过独立新风换气系统对大楼空气进行过滤、深度表冷除湿，送入室内干燥、洁净而舒爽的新鲜空气，避免产生常规空调系统易滋生军团菌的危险，空气含氧量、洁净度、流量及舒适度大大增加，提升室内空气健康品质。

In the high efficiency oil removal technology aspect, the theory study and application experiment of air sparged liquid-liquid hydrocyclone was carried out, enlightened by the air sparged solid-liquid hydrocyclone. Firstly, the strength and movement of dispersed phase was analyzed in theory, it was proved that the air bubble-oil drop polymer trend to move to the axes of hydrocyclone. Secondly, using CFD method, the characteristics of oil-air-water flow field were studied, including velocity distribution, pressure distribution, turbulent motion energy and its dissipation distribution. The characteristics and separation effect under different air injection methods were simulated. Thirdly, the separation ex-periment of air sparged liquid-liquid hydrocyclone was carried out at Lab. The major structure parameters of the hydrocyclone were optimized, the reasonable air injection method and performance parameters were determined through 4 groups of air injection experiments.

首先，对气携旋流场中分散相粒子的受力及运动进行了理论分析，证明了气泡与油滴形成的聚合体，更易于向轴心运动；其次，应用CFD方法，研究了油-气-水三相流场的速度分布、压力分布、湍动能及其耗散率分布特性，对不同注气方式的流场特性及分离效果进行了数值模拟；第三，开展了气携液-液旋流分离特性室内研究，优化了旋流器的主要结构参数，对四种注气方式的分离效率进行了对比，确定了合理的注气方式和操作参数；最后，在油田现场开展了处理聚驱采出污水工艺试验，确定了工艺运行参数，评价了处理效果。

When all-air system with air return runs in the mode of all fresh air supply in summer and winter, there are some problems in air condition system, such as diameter of fresh air pipe is too small, the refrigerating effect of cool source don t suffice the need of air supply and air handling equipment handle air in low efficiency.

有回风的全空气空调系统在夏季和冬季工况全新风状态下运行时，将遇到新风管径过小、冷源制冷能力不能满足要求和空调处理设备处理能力不够等一系列问题。初步计算一次回风系统在全新风运行送风时，新风经过表面式空气处理设备处理是否可以达到合适的送风温度，以探讨有回风的全空气空调系统全新风运行送风的可行性

According to the different functions of rooms, the focus on air-conditioning system is divided into two kinds of air supply, large space such as foyer, and other all-air system, directly from the new wind and the introduction of outdoor air return of air supply; office and equipment Such as the use of fan-coil plus an independent air system, the new wind from the outdoor unit to introduce new wind to deal with indoor air enthalpy value, fan coil bear all indoor cooling load and part of the new rheumatoid load.

根据各不同功能房间，将该集中系统分为二种空调送风方式，高大空间如门厅等采用全空气系统，新风直接从室外引进与回风合后送风；办公室及设备间等采用了风机盘管加独立新风系统，新风机组从室外引入新风处理到室内空气焓值，风机盘管承担室内全部冷负荷及部分的新风湿负荷。

Based on the RFID technology's air materials management system management system, through the RFID technology, the computer information technology, the networking and so on many technologies, builds the air materials company unified information platform, can realize the Airline various Functional departments's information sharing, the service conformity; Through the RFID technology, the monitoring technology, the entrance guard technology, realize to the air materials warehouse personnel and the cargo digitized management, comes in and goes out the management including the personnel, the cargo leaves the warehousing management, the automatic audit treasury or ware house, the storehouse position automatic assignment, the visualization warehousing management, consumes the material fine refinement management, when the long-lived management, the application course track; Realizes reasonably to the air materials, scientific, the highly effective management function, and had guaranteed the air materials manages each link information acquisition the speed and the accuracy, guaranteed that the Airline grasps the air material inventory accurately promptly the real data, maintains with reasonably the control air material inventory situation.

基于RFID技术的航材管理系统，通过RFID技术、计算机信息技术、网络技术等多项技术，建立航材公司统一的信息平台，能够实现航空公司各职能部门的信息共享，业务整合；通过RFID技术、监控技术、门禁技术，实现对航材仓库人员及货物的数字化管理，包括人员出入管理，货物出入库管理、自动盘库、库位自动分配、可视化仓储管理、耗材精细化管理、时寿件管理、应用历程跟踪；实现对航材合理、科学、高效的管理功能，并且保证了航材管理各个环节信息采集的速度和准确性，确保航空公司及时准确地掌握航材库存的真实数据，合理保持和控制航材库存情况。

In order to better service the China market, Hong Mei wind air-conditioning has been fully acquired Guangzhou Ling wind air-conditioning plants, air-conditioning factory Guangzhou Ling Feng was established in 1992 production, with the production of air handling units for many years the history of the air handling units can produce products that have ceiling-type, horizontal air deal with wind and multi-functional modular cabinets air-conditioning units, exhaust ventilation counter centrifugal, fire cabinet centrifuge, fan coil units and other series products, and customer requirements in accordance with non-standard design and production and on-site assembly.

为更好的服务中国市场，康美风空调已全面收购广州灵风空调设备厂，广州灵风空调设备厂于1992年成立生产，具有生产空气处理机组多年的历史，可生产的空气处理机组产品有吊顶式、卧式空气处理风柜及多功能组合式空调机组，离心式通风排气柜、消防柜式离心机、风机盘管等系列产品，并可根据客户要求进行非标设计生产及现场组装。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐