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Thermal comfort and indoor air quality requirements are presented; the contents cover the following topics:(1) Concept of air-conditioning,(2) Thermal principle,(3) Psychrometry and wetted-surface heat transfer,(4) Heating and cooling-load calculations,(5) Air-conditioning systems,(6) Fan and duct system,(7) Pumps and piping,(8) Cooling and dehumidifying coils,(9) Air-conditioning controls,(10) Absorption refrigeration,(11) Heat pump,(12) Cooling towers and evaporative condensers.

课程大纲本课程将介绍空调工程与系统设计,藉由湿空气线图讨论空气调节之过程,分析人体舒适与空气品质之需求,及各种空调设备系统之设计,内容涵盖如下:(1)空调的概念(2)热原理(3)湿空气与湿表面热传(4)加热与冷却负荷估算(5)空调系统(6)风扇与风管系统(7)泵与管路配置(8)冷却与除湿盘管(9)空调自动控制(10)吸收式冷冻系统(11)热泵(12)冷却水塔与蒸发式冷却。

This paper, basing on the software system, analyzes the quenching process at point of diathermanous subject view; introduces the instrument of measurement and the experiment principle; concretely analyses the mathematic models and processing method of the data-processing system, which is the theoretic groundwork for programming; describes the makeup of the software and how to design and actualize it.

论文部分基于作者所开发的淬火介质冷却性能测试软件系统,从传热学的角度分析了淬火冷却过程;介绍了淬火冷却性能测试设备及原理;重点分析了数据处理系统部分数学模型的建立及相应的数学处理方法,这部分是系统编程的理论基础;并概述了系统的构成,软件的设计及实现。

Introduces the significance of application of all-air air conditioning system and analyzes the two problems about energy- saving and purifying of using all outdoor-air in all-air air conditioning system .

介绍了应用全空气空调系统的意义,分析了全空气空调系统中全新风运行方式所带来的节能与净化的两大问题;认为全空气空调系统是较好的空调系统,将蒸发冷却技术、热回收技术、变风量控制技术相结合的蒸发冷却新风空调集成系统具有广阔的应用前景。

First according to the hydraulic pressure elevator system diagram, use the machine design and hydraulic transmission knowledge calculates the diameter of the plunger, cylinder tube wall thickness as well as cylinder bottom thickness; second, through the examination confirmation to the obtained result to complete the work of cylinder design; Simultaneously has carried on the component choice and the computation; Through to the system calorific capacity computation the and the volume of cooling water while the fuel tank cools when needs to complete the hydraulic pressure elevator fuel tank design; Based on the system oil stream condition to calculated the tube internal pressure lose, the local pressure loss as well as the all of the pressure lose to carried on the system checking calculation; Finally through the consult correlation design handbook to calculation and examines the belt, the band pulley, the axis, as well as the key, has completed the hydraulic pressure elevator pumping station transmission system design.

首先根据液压电梯系统原理图,利用机械设计与液压传动等方面的知识计算出柱塞的直径、缸筒的壁厚以及缸底厚度,并对所得结果进行校核验证完成了工作油缸的设计;同时进行了元件的选择和计算;其次,通过系统发热量的计算和油箱冷却时需要的冷却水量的计算完成了液压电梯油箱的设计;依据系统油流状态计算出管内压力损失、局部压力损失以及总压力损失进行了系统的验算;最后通过查阅相关设计手册对带、带轮、轴、以及键进行设计计算和校核,完成了液压电梯的泵站传动系统的设计。

Firstaccording to the hydraulic pressure elevator system diagram, usethe machine design and hydraulic transmission knowledge calculatesthe diameter of the plunger, cylinder tube wall thickness as wellas cylinder bottom thickness; second, through the examinationconfirmation to the obtained result to complete the work ofcylinder design; Simultaneously has carried on the component choiceand the computation; Through to the system calorific capacitycomputation the and the volume of cooling water while the fuel tankcools when needs to complete the hydraulic pressure elevator fueltank design; Based on the system oil stream condition to calculatedthe tube internal pressure lose, the local pressure loss as well asthe all ofthe pressure lose to carried on the system checking calculation;Finally through the consult correlation design handbook tocalculation and examines the belt, the band pulley, the axis, aswell as the key, has completed the hydraulic pressure elevatorpumping station transmission system design.

首先根据液压电梯系统原理图,利用机械设计与液压传动等方面的知识计算出柱塞的直径、缸筒的壁厚以及缸底厚度,并对所得结果进行校核验证完成了工作油缸的设计;同时进行了元件的选择和计算;其次,通过系统发热量的计算和油箱冷却时需要的冷却水量的计算完成了液压电梯油箱的设计;依据系统油流状态计算出管内压力损失、局部压力损失以及总压力损失进行了系统的验算;最后通过查阅相关设计手册对带、带轮、轴、以及键进行设计计算和校核,完成了液压电梯的泵站传动系统的设计。

In some conventional fan revolution speed control methods, variable control of the number of revolutions of a cooling fan is performed by a process comprising steps of detecting an actual temperature of cooling target fluid, ie fluid to be cooled by the cooling fan, such as hydraulic oil and circulating radiator cooling water for cooling an engine (such cooling water is hereinafter referred to as coolant), determining a target fan revolution speed by a system of a proportional integral control unit based on the difference between the actual temperature detected and a target temperature, and changing the fan revolution speed based on the target fan revolution speed so as to bring the actual temperature of the cooling target fluid down to the target temperature.

在一些传统风扇转速控制方法,控制变量的数目革命的一个冷却风扇,是由一个过程组成的步骤检测到一个实际温度冷却目标流体,即流体被冷却,由冷却风扇,如液压石油和散热器循环冷却水用于冷却发动机(如冷却水是以下简称为制冷剂),确定一个目标风扇转速由一个系统的比例积分控制单元基础上的差异,实际温度检测和目标温度,并改变风扇转速的基础上,针对风扇转速,使实际温度的冷却液指标下降到目标温度。

H.T.fresh cooling system is filled cooling water of soften additive expansion chamber arrives at water level of being specified.

2.3 高温淡水冷却系统已注入软化添加剂的冷却水,膨胀水箱达到规定的水位高度。

Startup process timing analysis of liquid bipropellant pressure-fed propulsion system;2. Implementation of Parallel Extending Memory Based on Timing for AT89C2051;3. Combining with the timing of strip elements spraying status calculation and setup values outputting in on-line feed-forward control,the timing of calculation and outpu.

结合国内某1450mm热轧带钢厂层流冷却系统的改造,介绍了过程级数学模型子系统的组成,主要包括进程的划分及激活逻辑、共享数据区的分类及数据流程,并结合实际在线前馈控制过程中样本集管组态计算和下发的时序,以及自适应后计算时序及自适应系数的数据流程,说明了数学模型子系统构成机制的合理性和运行结果的有效性。

As we noted above, the use of better cooling systems will improve the result ofRadeon HD 2900 XT .

正如我们上面提到的,使用较好的冷却系统,将改善因房屋

In Kharkov were directed to improve the cooling system and increase the temperature drop of the lubricant that passed through the engine.

基洛夫工厂和哈尔科夫的第75工厂接到命令,改进冷却系统,以增加润滑剂流过发动机前后的温差。

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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

The eˉtiology of hemospermia is complicate,but almost of hemospermia are benign.

血精的原因很,以良性病变为主。