换能器

Examinations of steady status and analysis of dynamic experiments have been conducted on Band-Tube evaporator and Parallel-Flow condenser using R134a refrigerant. The steady examination show that the model error was under the allowable error, The inlet mass and enthalpy disturb experiments indicate that the subsection model ,be good at reflecting the change of parameters of the heat exchanger, accord with the basic principle of thermodynamics theory and the actual work status.

在进行仿真试验时，以使用R134a作制冷剂的管带式蒸发器和平行流式冷凝器为对象，完成了稳态仿真计算、试验和动态仿真分析，稳态计算结果和试验数据对比表明，其误差在允许范围内；进口质量和焓值的扰动试验结果表明：本文所建的区段式换热器仿真模型，能很好的反映换热器性能参数的动态变化，与系统热动力学理论和冷凝器、蒸发器的实际工作过程基本一致。

According to customer needs and timely maintenance for all types of customers plate heat exchanger.

根据客户需要，并能及时为客户维修各类板式换热器。

It equips with particular "Hot Water Interchanger" and "Heating Interchanger", connecting with heat collector surface and wall separately. Therefore, it can supply not only hot water, but also house heating, because users are able to control the heat flow direction.

装置上设置了独特的与集热面相通的"热水换热器"和通向内墙面的"供暖换热器"，可以根据用户需要控制热量的流向，使其不仅具有提供热水的功能，在需要供暖的时候还能直接以墙体的形式向室内供暖。

ZPG type strainer is a kind of strainer which can be applied to imdustrial cooling by using low-grade water and can also be used for other technological processes requiring filtration.It has the function of automatic flushing impurities elimination.It is generally installed in the front part of heat interchanger or other actuating mechanisms to clean and eliminate impurities regularly.

自动反冲洗过滤器是一个能使用低质水进行工业冷却的过滤器，同时也可用于其他需要过滤的工艺过程，它具有自动冲洗排除杂质功能，一般安装在换热器及其他执行机构的前面，定期清洗排除杂质。

A waste heat recoverer in the offgas system was designed while manufacturing of activated carbon by fluidized -bed, to heat the air and steam needed for reaction.

用流态化炉生产颗粒活性炭时，在尾气通道上设计了一套余热回收装置，并用余热加热流态化反应所需的空气及水蒸气，该装置也能自产蒸汽，最大蒸汽发生量为70 kg/h，余热换热器热利用率为42.7%。

Study results show that the thermal transmission characteristic of the radiation recuperator is variable during the heat treating process,and the average preheating temperature of air is not capable of achieving the rated design value of the recuperator.

结果表明，燃气辐射换热器的传热特性在整个热处理过程中是不断变化的，空气平均预热温度并不能达到换热器的额定设计值，故在周期式热处理炉上使用辐射换热器并不完全合适。

Fin spacing and density of the staggered tube bundle have much more influence on its performance, when the distance between fins decreased or the tube distributing density increased, heat transfer of the exchanger will be strengthened and pressure drop will be distinctly aggrandized.

从实验和模拟结果分析可知，实验所得传热因子j较模拟结果有12%范围内的减小，而阻力因子f有4%～16%的增大；翅片间距和管排密集度对翅片管换热器性能影响很大，减小翅片间距和增大管排密集度均能增强换热器的换热效果，但压力损失也明显增加。

The main heat transfer mechanism of the above-cited heat transfer is based on the micro-liquid film evaporation at the bottom of pressured and deformed gas bubbles.

此外 ，在大型空分装置中，若能使核心部件主冷凝蒸发器的换热温差减少 1K ，则仅一个机组每年就可节省 10 0万美元以上，同时国内外一些学者已将狭缝强化换热技术应用于板翅式换热器，收到了显著效果[1] 。

The results showed that compared to conventio nal smooth segment baffle heat exchanger,the plate heat exchanger can effec tively strengthen the film heat transfer coefficient of the shell side.

研究结果表明，与传统的光滑管弓形隔板换热器相比，板式换热器能非常有效地强化空气侧的膜传热系数。

Inspection installation and water tightness transducer of echo sounder on berth.

测深仪换能器舟台安装和水密性检查。

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