Simulation Study on Freezing Heat Extraction of U Buried Pipe Heat Exchanger of Ground-source Heat Pump 土壤源热泵U型埋管换热器冻结取热过程的模拟研究
Replacing the existing heat exchanger in the extraction section can prevent the corrosion of the products from the decomposition of sulfolane to the heat exchanger; 对抽提工段的换热器进行更换,可以防止环丁砜分解物对换热器的腐蚀;
The United States in burning waste plastic, using heat decomposition extraction chemical raw materials and other aspects of the massive work and achieved some results. 美国在燃烧废旧塑料利用热能,热分解提取化工原料等方面进行了大量工作并取得了一些成果。
Rapid growth of mother dendrites in a given location of a melt at just below the liquidus temperature, that growth being the result of rapid heat extraction from the melt, or from recalescence. 在特定的熔点,以低于液相线的温度快速生成母晶枝,这是使熔融金属或复辉快速散热的结果。
Numerical study of heat extraction from porous media reciprocal flow burner with embedded heat exchangers 往复流多孔介质燃烧换热器热量提取的数值研究
A new heat extraction method for determining oxide inclusion in steel was developed. 开发了差热抽取测定钢中氧化物夹杂的新方法。
Seal assembly of three stages ( guide sleeve, shiftable seal ring unit and disc-seal) is adopted to accomplish the sealing of oil heat extraction equipment. 采用3级(导套、浮动密封环组、盘根)组合密封结构设计方法,实现石油热采密封系统的密封要求。
The thermodynamic and economic analysis of heating system of absorption heat pump utilizing waste heat of oil extraction sewage 利用油田污水余热热泵供暖系统的热力经济分析
3D numerical simulation for coupled THM of rock matrix-fractured media in heat extraction in HDR 高温岩体地热开发的块裂介质固流热耦合三维数值模拟
Based on the above results, it is suggested that the CO2-SFE method is better than heat extraction method. 因此,就提取丢糟中主要酯类成分的效果来看,CO2超临界萃取法优于酒精热浸提法。
There is obvious difference on the extraction rate and extraction time between microwave-assisted and heat circum-fluence ways, microwave-assisted extraction rate are apparently 40% better than heat circum-fluence extraction, the taken time is also curtailed greatly. 微波辅助提取在提取时间和有效成分提取率方面与热回流提取有着很大差别,微波辅助提取率高于热回流提取率40%以上,所需时间大大缩短。
Studies were carried out on the processing technology of haw beverage, and the parameters including time and temperature were determined for obtaining the optimum colour and smell of haw in heat extraction. 以山楂为对象,对山楂饮料的加工工艺进行研究,找出采用热浸提法提取山楂汁的色泽、果香的最佳时间和最佳温度;
2.1 Microcalorimetric method is a new method to determine the reaction heat of solvent extraction process. 本文的主拥新之处:1.将微量量热法应用于溶剂革取过程,进行革取反应热的测定,止匕测定方法简单、迅速,不用烦琐计算,不用添力。
Generally, the multi-zone heat-exchanging mode, heat-exchanging between zones of converter, is adopted for heat extraction of catalyst bed in CO conversion reaction. CO变换反应催化剂床层排热一般采用多段换热式,即变换炉段间换热。
To enhance the heat efficiency of dual extraction heating turbine, circulating water heating is adopted. 为了提高双抽汽供热汽轮机的热效率,改用循环水供热。
The variation of aperture of fracture with the heat extraction. 裂缝宽度随地热提取变化的规律。
The following are revealed: ( 1) drop of rock temperature with the heat extraction and the distribution variation; 对6000m深的高温岩体地热开发进行了详细的数值分析,揭示了:(1)岩体温度随地热提取降低及其分布变化的规律;
Analysis to the heat extraction rate of cool storage air conditioning system Air(初三适用)冰蓄冷空调除热量分析
In this paper, PC-bus industrial computer being as a kernel, the intelligent control system is demonstrated for continuous induction heat treatment of extraction oil bar. 本文针对抽油杆的连续感应中频热处理过程,介绍了以PC总线工控计算机为核心的智能控制系统。
This paper compared the result of heat heat circum-fluence extraction with that of microwave-assisted extraction of Salidroside from Rhodiola crenulata. 比较传统热回流提取与微波辅助提取大花红景天有效成份的效果。
Why chinese? An aqueous chemistry problem in heat extraction process of dense oil by means of steam injection 稠油注蒸汽热采过程中的水化学问题
Using finite difference approach to simulate the transient performance of the solar pond, and study the effect of each layer's thickness and heat extraction on the temperature distribution, and the evolvement of the temperature profile. 应用有限差分法对太阳池内的瞬态行为进行模拟,研究各层厚度及取热速率等因素对温度场的影响,研究温度场的演变情况等;
So. after heat inactive or extraction using hydroxybenzene, chloroform, this problem could be basically solved. 通过热灭话将T4DNA连接酶灭活,或者用酚、氯仿抽提后,体系中的*\人转化问题基本可以得到解决,能够达到与单纯质粒相近的转化效率。
According to the practical project, the experimental system on single U shaped and double U shaped vertical borehole heat exchanger was established. Heat release experiment in summer and heat extraction experiment in winter were carried out. 结合实际工程建立单U型与双U型埋管换热器实验系统,进行夏季排热和冬季取热实验。
The extraction procedure, the treatment method during pro extraction and post extraction in the determination of crude oil in grain and oilseed with Soxhlet extraction were improved. The improved methods of heat extraction oil weight method and residual method and national standard method were also compared. 将粮食、油料脂肪测定方法的抽提过程和抽提前后采用的处理手段进行改进,改进法热浸提-油重法和残余法与国标法进行多方面比较对照实验。
The corrosion of heat exchanger tubes in extraction system, pre-treatment system and reforming system are described in detail. 文章详细阐述了催化裂化重整车间抽提系统、预加氢系统、催化重整部分换热设备管束腐蚀情况。
However, the rejection temperature always has influence on the heat extraction ability. 取热速率却总是受排热温度的影响明显。
Comparied with heat reflux extraction method, microwave-assisted extraction method is beneficial to the anthocyanin extraction under certain condition ranges. 通过和热回流萃取进行比较得知,在一定条件范围内,微波辅助方法更有利于花青素的萃取。
Improved the original oil content determination method by using isopropanol cold extraction method instead of ether heat extraction method. 4. 并对原有的含油率测定方法进行改进,使用异丙醇冷萃取法替代以前的乙醚热萃取法。
At domestic and abroad, the main method of extracting the ingredients of Chinese herbal medicine is using heat extraction ( boiling method, reflux extraction) soak extraction ( percolation method, cold soak method) and other conventional extraction methods. 国内外提取中草药化学成分的方法主要采用热提取法(煎煮法,回流提取法)和浸泡提取法(渗流法、冷浸法)等常规提取法。