围绕低温恒温试验箱系统共同分析节能问题

    论文围绕低温恒温试验箱系统节能问题，通过红外无损检测技术对恒温恒湿试验箱维护结构保温性能进行了实验研究，分析了低温恒温试验箱门流场和能耗利用情况、计算了制冷系统能耗匹配问题等，其主要工作内容和结论如下：Paper around the low temperature test chamber system energy saving problem, through infrared nondestructive testing technology to maintain constant temperature and humidity test chamber structure heat preservation performance has carried on the experimental study, the door is low temperature constant temperature test flow field are analyzed and the using situation of energy consumption, calculate the energy consumption of refrigeration system matching problem, etc., its main contents and conclusions are as follows:            

    1、分析了热流法、热箱法及红外无损检测的检测原理，利用红外热像仪对某恒温恒湿试验箱维护结构保温缺陷进行了红外检测，利用 MATAB 软件对红外图片进行了直方图均衡化、自适应滤波和中值滤波等处理，即将红外图片转化为灰度图片并对灰度进行了拉伸，并和数值分析对比，结果表明处理过的图片可以直观、清晰的反映出低温恒温试验箱保温缺陷。1, analyzed the heat flux method, hot box method and testing principle of infrared nondestructive testing, using the infrared thermal imager to maintain a constant temperature and humidity test chamber structure insulation defects for the infrared detection, using MATAB software of infrared image histogram equalization, adaptive filtering and median filtering and other processing, the infrared images into grayscale image and the gray level stretch, and numerical analysis, the results show that the processed images can be intuitive, clear reflect the low temperature constant temperature test chamber insulation defects.

    2、利用红外热像仪对一低温恒温试验箱维护结构的内外表面温度场进行了逐时测量，采用面积加权平均法求取了低温恒温试验箱内外墙表面温度，计算了逐时传热系数和热流密度，并和恒温恒湿试验箱设计值进行了对比，实验误差在 10％以内，也就说利用此方法可以达到工程实用的要求，为低温恒温试验箱建库及后期保温性能检测提供了理论依据和一种检测手段。2, the use of infrared thermal imager to maintain a low temperature constant temperature test chamber structure of inside and outside surface temperature field was carried out by measuring, the area of the weighted average method is adopted to calculate the temperature constant temperature test the outer wall surface temperature in the cabinet, were calculated by heat transfer coefficient and heat flux, and constant temperature and humidity test chamber design value were compared, the experiment error within 10%, with this method is said to be able to achieve the requirement of the engineering practical, built libraries for low temperature constant temperature test chamber and the late insulation detection provides the theoretical basis and a detection means.

    3、恒温恒湿试验箱维护结构的传热负荷占到低温恒温试验箱热负荷的 20％-35％，减少维护结构传热可以达到节能的目的，本文分析了目前运行恒温恒湿试验箱的库型特点，按优化化理论，对比了正方形、长方形及圆柱形库体，并按照节能原则认为圆柱体恒温恒湿试验箱可以减少恒温恒湿试验箱维护结构得热。3, constant temperature and humidity test chamber maintenance of the structure of the heat load of the low temperature test chamber heat load of 20% 35%, reduce heat transfer can achieve the goal of energy saving maintenance structure, this paper analyzes the current operation type library characteristic of constant temperature and humidity test chamber, according to optimization theory, and compared the square, rectangular and cylindrical body, in accordance with the principle of energy conservation and thought the cylinder constant temperature and humidity test chamber can reduce the maintenance structure constant temperature and humidity test chamber heat gain.

    4、恒温恒湿试验箱由于空气幕设置不当或不合理极易导致恒温恒湿试验箱库房吊顶结霜及积霜融化侵蚀导致墙体的损坏，本文分析了影响低温恒温试验箱库门流场的因素，建立了空气幕存在情况下的空气渗透量方程，计算了某运行恒温恒湿试验箱空气幕的空气渗透量，并对运行空气幕进行了结构参数及运行条件优化，得出优化后的空气幕较优化前可节能 40％左右。4, constant temperature and humidity test chamber due to improper air curtain set or unreasonable easily lead to constant temperature and humidity test chamber warehouse condole carries on the frosting and frost melt erosion cause the damage of the wall, this paper analyzes the influence of low temperature constant temperature test chamber door factors of flow field, established the air ShenTouLiang equation, under the circumstance of air curtain is calculated by running a constant temperature and humidity test chamber air ShenTouLiang air curtain, and the operation of air curtain has carried on the optimization of structural parameters and operating conditions, it is concluded that the optimized air curtain before optimization can energy saving 40% or so.

    5、恒温恒湿试验箱能耗管理在很多低温恒温试验箱运行管理中没有得到足够的重视，利用 VB 作为软件开发平台的优势，开发了基于 VB 的恒温恒湿试验箱能耗管理软件，软件包括数据采集模块、数据存储模块、报表打印模块、用户管理模块等，该程序目前已在恒温恒湿试验箱能耗管理中开始试用。5, constant temperature and humidity test chamber management of energy consumption in a lot of low temperature test box didn't get enough attention in operation and management, using VB as the advantage of software development platform, developed based on VB constant temperature and humidity test chamber energy management software, software includes data acquisition module, data storage module, report forms printing module, user management module, the program is now being tried in the constant temperature and humidity test chamber energy consumption management.

    6、恒温恒湿试验箱设计负荷和运行负荷往往会存在很大的差别，很多恒温恒湿试验箱由于设备老化、后期改造、，跑冷等原因，使得系统冷量不相匹配，造成大马拉小车现象，导致能耗的浪费，本文通过对低温恒温试验箱实际热负荷及压缩机所供冷量的对比分析，指出了恒温恒湿试验箱运行中存在的问题，并从技术水平和管理手段两方面对恒温恒湿试验箱的节能运行提出了改进措施。6, constant temperature and humidity test chamber design load and running load tend to existence very big difference, a lot of constant temperature and humidity test chamber due to the equipment aging, later reconstruction, and run cold, does not match the flow system of cold, big mara car phenomenon, cause the waste of energy consumption, this article through to the low temperature test chamber is actually an analysis of the comparison of the heat load and cooling compressor, points out the problems in the operation of the constant temperature and humidity test chamber, and from two aspects of technology and management methods of constant temperature and humidity test chamber for energy saving operation improvement measures are put forward.

    低温恒温试验箱发展变化受到经济发展变化因素的影响，鸿达天矩根据其中的变化规律，用心血融铸经营理念，让企业文化生生不息！专业生产环境生产设备二十余年，咨询！Low temperature test chamber are under the influence of the change of economic development, the development and change of hong da day moment according to the changing law of them with painstaking care strring management concept, make the enterprise culture circle of life! Production equipment more than 20 years specializing in the production environment, welcome call consulting