圍繞低溫恒溫試驗箱系統(tǒng)共同分析節(jié)能問題

    論文圍繞低溫恒溫試驗箱系統(tǒng)節(jié)能問題，通過紅外無損檢測技術(shù)對恒溫恒濕試驗箱維護結(jié)構(gòu)保溫性能進行了實驗研究，分析了低溫恒溫試驗箱門流場和能耗利用情況、計算了制冷系統(tǒng)能耗匹配問題等，其主要工作內(nèi)容和結(jié)論如下：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、分析了熱流法、熱箱法及紅外無損檢測的檢測原理，利用紅外熱像儀對某恒溫恒濕試驗箱維護結(jié)構(gòu)保溫缺陷進行了紅外檢測，利用 MATAB 軟件對紅外圖片進行了直方圖均衡化、自適應(yīng)濾波和中值濾波等處理，即將紅外圖片轉(zhuǎn)化為灰度圖片并對灰度進行了拉伸，并和數(shù)值分析對比，結(jié)果表明處理過的圖片可以直觀、清晰的反映出低溫恒溫試驗箱保溫缺陷。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、利用紅外熱像儀對一低溫恒溫試驗箱維護結(jié)構(gòu)的內(nèi)外表面溫度場進行了逐時測量，采用面積加權(quán)平均法求取了低溫恒溫試驗箱內(nèi)外墻表面溫度，計算了逐時傳熱系數(shù)和熱流密度，并和恒溫恒濕試驗箱設(shè)計值進行了對比，實驗誤差在 10％以內(nèi)，也就說利用此方法可以達到工程實用的要求，為低溫恒溫試驗箱建庫及后期保溫性能檢測提供了理論依據(jù)和一種檢測手段。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、恒溫恒濕試驗箱維護結(jié)構(gòu)的傳熱負荷占到低溫恒溫試驗箱熱負荷的 20％-35％，減少維護結(jié)構(gòu)傳熱可以達到節(jié)能的目的，本文分析了目前運行恒溫恒濕試驗箱的庫型特點，按優(yōu)化化理論，對比了正方形、長方形及圓柱形庫體，并按照節(jié)能原則認為圓柱體恒溫恒濕試驗箱可以減少恒溫恒濕試驗箱維護結(jié)構(gòu)得熱。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、恒溫恒濕試驗箱由于空氣幕設(shè)置不當(dāng)或不合理極易導(dǎo)致恒溫恒濕試驗箱庫房吊頂結(jié)霜及積霜融化侵蝕導(dǎo)致墻體的損壞，本文分析了影響低溫恒溫試驗箱庫門流場的因素，建立了空氣幕存在情況下的空氣滲透量方程，計算了某運行恒溫恒濕試驗箱空氣幕的空氣滲透量，并對運行空氣幕進行了結(jié)構(gòu)參數(shù)及運行條件優(yōu)化，得出優(yōu)化后的空氣幕較優(yōu)化前可節(jié)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、恒溫恒濕試驗箱能耗管理在很多低溫恒溫試驗箱運行管理中沒有得到足夠的重視，利用 VB 作為軟件開發(fā)平臺的優(yōu)勢，開發(fā)了基于 VB 的恒溫恒濕試驗箱能耗管理軟件，軟件包括數(shù)據(jù)采集模塊、數(shù)據(jù)存儲模塊、報表打印模塊、用戶管理模塊等，該程序目前已在恒溫恒濕試驗箱能耗管理中開始試用。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、恒溫恒濕試驗箱設(shè)計負荷和運行負荷往往會存在很大的差別，很多恒溫恒濕試驗箱由于設(shè)備老化、后期改造、，跑冷等原因，使得系統(tǒng)冷量不相匹配，造成大馬拉小車現(xiàn)象，導(dǎo)致能耗的浪費，本文通過對低溫恒溫試驗箱實際熱負荷及壓縮機所供冷量的對比分析，指出了恒溫恒濕試驗箱運行中存在的問題，并從技術(shù)水平和管理手段兩方面對恒溫恒濕試驗箱的節(jié)能運行提出了改進措施。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.

    低溫恒溫試驗箱發(fā)展變化受到經(jīng)濟發(fā)展變化因素的影響，鴻達天矩根據(jù)其中的變化規(guī)律，用心血融鑄經(jīng)營理念，讓企業(yè)文化生生不息！專業(yè)生產(chǎn)環(huán)境生產(chǎn)設(shè)備二十余年，咨詢！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