共查询到20条相似文献,搜索用时 156 毫秒
1.
2.
本文介绍应用MCS—51系列单片计算机研制的电阻炉多回路程序控温装置的工作原理,并对其性能特点进行了叙述。多回路程序控温装置有较强的抗干扰能力和良好的性能价格比,可作为电阻炉新产品的电气配套设备或利用其技术特点对常规的电阻炉控温系统进行技术改造。 相似文献
3.
本文在概述电阻炉的基本工作特性、主要性能参数及其试验方法的国内外现状和一般发展动向后,对电阻炉空炉损耗功率和积蓄热的各种现有测试方法及其修订方案作了介绍和比较。最后对如何进一步开展我国电阻炉试验方法的研究提出了几点建议。 相似文献
4.
5.
1982年7月“电阻炉标准修改工作组”在哈尔滨集会,对IEC397和JB2251—78电阻炉标准中“电阻炉热稳定状态的确定方法”的修订进行了讨论和试验验证,提出了新的方法。为了有利于新方法的推广应用,本文对此进行了介绍,并对新方法作了较祥细的说明。 相似文献
6.
7.
8.
介绍计算机处理气象资料,为风力机设计提供数据,用优化设计决定风力机参数,用计算机辅助设计设计风轮和计算气动特性的方法。 相似文献
9.
本文简述了活性炭活化原理,根据该原理研制了新型活性炭活化电阻炉.文中详细介绍了活性炭活化电阻炉的结构、参数以及其使用效果. 相似文献
10.
介绍了采用计算机辅助设计电阻丝螺旋加热体的计算程序和绘图程序的编制方法。较多地采用默认值,操作方便、快捷。 相似文献
11.
《Applied Energy》2002,73(2):167-182
The paper presents the application results of a fuzzy controller of temperature and its rate of change in indirect resistance chamber furnaces. The method of an initial controller tuning based on the computer simulations is described, where the modelling of the furnace appears as a special problem. Further controller tuning was done based on tests performed on the real furnace. The quality of the finally-adopted controller on the real furnace is assessed by its tracking of the desired response, regulation robustness with respect to the presence of load in the furnace, as well as by a comparison with the ideal implementation of the Dahlin algorithm for classic PID control. The experimental part of the work is made using a 5 kW indirect resistance chamber furnace. 相似文献
12.
13.
14.
介绍了晶闸管移相触发组合模块(以下简称晶闸管模块)的原理及其在箱式电阻炉温控系统中的调功方法,同时还介绍了箱式电阻炉的用途及温控系统的组成原理。与以往传统接触器式控制和分立晶闸管器件电炉系统相比较,晶闸管移相触发组合模块具有无触点、无电火花、维护方便、延长器件使用寿命等特点。 相似文献
15.
16.
17.
18.
Zdeněk Jegla 《传热工程》2013,34(6):546-555
Tube coil arrangement dominantly influences the thermal-hydraulics characteristics of furnace and its economy. The presented method is based on standard long-used design methods (Lobo-Evans method, Belokon method). It is shown how these standard global design methods can be (for common-operating conditions) suitably generalized and simplified. It allows (for the purpose of optimum design of coil arrangement) to arrange the basic heat transfer equation for radiant chamber. In connection with investment cost relations for individual furnace subsystems (tube coil, burners, lining, etc.) and operating cost relations (fuel consumption, fluid pumping cost), the final objective function of total cost can be obtained. This objective function then allows finding the optimum coil arrangement from minimum total cost point of view. Moreover, the obtained results allow one to formulate some general recommendations suitable for furnace designers. The developed method can be used for the individual solution of a radiation-type of tubular furnaces and also for the first (preliminary) design stage usually connected with a proposal for the customer when only basic process and furnace design data are known. The developed method can be also used for the effective solution of the integration of radiation furnaces into processes. The application of the developed method is demonstrated through a case study—the optimum arrangement of coil in a gas plant regeneration furnace. 相似文献
19.
20.
本文论述了计算机辅助设计(CAD)技术及其在舰用燃气轮机设计工作中应用的前景,并提出了舰用燃气轮机CAD 系统实现的方案和方法。 相似文献