查询词典 heat regulator

In first, a new short time formula of one dimension heat conduction differential equation, based on the theory of one dimension transient method, is presented for thermophysical property measurement of wood. The result of testing on red pine and larch wood arc satisfied by new method.In succession, the relationship between heat conductivity of wood and moisture, density, porosity, temperature and grain is studied experimentally in the range from 25 to 100℃. The result shows that, the heat conductivity is in direct proportion to density. but in inverse proportion to porosity. The heat conductivity of air-dried wood increased probably linear with the temperature rising. And that heat conductivity along the grain of wood is higher than that cross the grain. The former is 1.8 or 2 times of the latter.

文中研究了25～100℃范围内，气干木材的导热系数与含水率、密度、孔隙率、温度及热流方向的关系，研究表明：木材导热系数与密度成正比关系，与孔隙率成反比关系：对于针叶材，导热系数与密度及孔隙率成线性变化关系，而对于阔叶材其变化关系近似成二次曲线；气干木材的导热系数随着温度的升高近似呈线性增加：热流平行于纹理方向的导热系数大于垂直于纹理方向的导热系数，两者的比值大约在1.8～2之间。

In order to reduce the measurement error of heat transfer in water and air side for finned-tube heat-exchanger as little as possible, and design a heat-exchanger test-board measurement system economically, based on the principle of test-board system error analyses and design, the equation of measurement error of heat transfer in air side and water side about orifice meter for the finned-tube heat-....

本研究在探讨影响政府机关导入资讯安全管理系统的因素，并设计及发展资讯安全管理系统的绩效衡量架构。研究方法采用文献回顾及专家问卷法进行资料搜集，并应用层级分析法进行评估指标及题项权重分析。研究发现导入资讯安全管理系统之影响因素中，以「获得上级授权程度、建立整体成员。。。。

On the basis of analyzing the thermodynamic properties and cycle performance of pure refrigerants, the paper optimizes their concentration while screening NARMs used in wide variable-temperature heat source. The practical applications of NARMs, such as R22/R123, R123/R125 etc., are studied in geothermal heat pump, seawater heat pump, air dehumidification system and dual-evaporator domestic refrigerator. The results show that the NARMs can match the limitation of a pinch point at the air-side exit of heat exchanger, reduce the unreasonable heat transfer temperature difference, and improve the COP of system. The above conclusion is proved by measuring the cycle performance of R12, MP39 and R11/R22 in a two-evaporator experimental system.

其次，本文在工质热物性和变工况循环性能分析基础上，筛选和优化了适应外部大变温热源约束条件的非共沸混合工质及其浓度配比；讨论了相变温差较大的非共沸混合工质（如R22/R123、R123/R125等）在地热源供热热泵、海水源供热热泵、双门冰箱和热泵空气除湿的应用，计算分析表明制冷与热泵系统采用相变温差较大的非共沸混合工质有利于弱化传热过程的&窄点&的约束，减小传热过程中的不合理温差，提高系统COP值；通过建立双蒸发温度循环系统试验装置，对R12、R22/R11和R22/R152a/R124循环性能进行实验研究，结果与理论分析一致。

Heat pump water heater series are: commercial heat pump water heater, home heat pump water heater, heat pump swimming pool machine; air-conditioning series has: window air conditioners, Split wall-mounted air conditioner, cabinet type air-conditioning, commercial air conditioners and so on, at the same time the introduction of The United States technology, specializing in central air-conditioning energy saving technology development, licensing changlingRB developed its heat recovery unit, with the exception of a common central air-conditioning refrigeration, heating capacity, it can also provide 24-hour hot water, truly (refrigeration, heating, hot water) three with one machine.

热泵热水器系列有：商用热泵热水器、家用热泵热水器、热泵泳池机；空调系列有：窗式空调器、分体壁挂式空调器、柜式空调式、商用空调器等，同时引进美国技术，专门从事中央空调节能技术开发，其研制的changlingRB牌热回收机组，除具备普通中央空调制冷、采暖的功能外，它还可以提供24小时生活热水，真正做到一机三用。

That is a process which uses steam power with heat pump to increase the pressure in heat pump and then with all the secondary steam of heat pump evaporator made both as heat steam of heat pump evaporator and the first evaporator.

通过对烧碱溶液热泵蒸发工艺的研究，提出了一种用驱动蒸汽将热泵效二次蒸汽全部用热泵增压后同时供给热泵效和第一效蒸发器作加热蒸汽的并列组合式工艺。

Self-Exciting Mode Oscillating-Flow Heat Pipe, also called pulsating heat pipe or oscillating heat pipe, is a novel heat transfer device that has an excellent heat transport performance.

自激振荡流热管也称为脉动热管，是一种新型高效的传热元件。本文提出了采用脉冲加热代替常规连续热源加热强化自激振荡流热管传热的方法，并对其进行了实验研究。

Online regulator design can be easily realized, as only algebraic operation is needed in the provided method. This sets up a theoretical basis for using self-tuning regulator to handle the problem of system parameter variation.

这种调节器设计方法只包括代数运算，适于在线实现，为采用自校正调节器控制，抑制系统参数扰动奠定了理论基础。

Yuefeng Electric Ltd., founded in 1984, and now employees more than 600 professional and technical personnel, management staff of 25 people, of which 36 were engineers, enterprise covers an area of 11 mu, building area of more than 10,000 square meters, is a development, production, marketing high-low-voltage electrical in one scale enterprises, the company long-term commitment to national industrial development, with many scientific research units and institutions of higher learning to work closely with the professional production of transformers, voltage regulator, voltage regulator, electrical power, Frequency Min rheostat, autotransformer starting decompression box, cabinet, welding machine, electro-magnet, as well as the introduction of the development of international standards of Germany's Siemens JBK5 machine tool control transformers, SSG coherent three CNC machine tool-type transformers and other products.

跃峰电器有限公司，创建于1984年，现在员工600多人，各类专业技术人员、管理人员25人，其中工程师36人，企业占地面积11亩，建筑面积 10000多平方米，是一个以开发、生产、销售高低压电气于一体的规模型企业，公司长期致力于民族工业发展，与众多科研单位及高等院校进行紧密合作，专业生产变压器、调压器、稳压器、电源电器、频敏变阻器、自耦减压起动箱、柜，电焊机、电磁铁以及引进开发具有国际水平的德国西门子JBK5机床控制变压器、SSG数控机床三相干式变压器等系列产品。

Study on design of the discrete state PI regulator and observers We extend the results of continuous system to discrete system in order to realize the state PI regulator by using computers.

离散状态PI调节器及估计器的设计研究将连续系统的有关结果推广到离散系统中，便于利用计算机进行计算和控制。

Licensing Laojun called Cha Cha Cha is not, but dozens of drugs selected food homology group of natural plant science from the regulator side Jiapin regulator.

老君牌舒压茶叫茶不是茶，而是精选数十种药食同源的天然植物科学组方而成的调压稳压佳品。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。