1)U-tubeU形埋管
1.Numerical simulation and experimental validation of energy storage characteristics of solar-U-tube soil;太阳能-U形埋管土壤蓄热特性数值模拟与实验验证
英文短句/例句
1.Influence analysis of soil temperature field on heat transfer performance of single vertical U-shape buried pipe土壤温度场对垂直单U形埋管换热性能的影响分析
2.Comparison of Vertical U-Tube Ground Heat Exchanger Thermal Resistance Calculation Methods竖直U形地埋管换热器传热热阻计算方法比较
3.Soil Temperature Change around Double U-type Buried Tube Heat Exchanger in Winter双U形地埋管换热器冬季周围土壤温度变化
4.Influence of soil temperature field on heat transfer performance of vertical U-tube ground heat exchangers土壤温度场对竖直U形地埋管换热性能的影响
5.Sustaining traction by U plus 8 shape sutures to correct inverted nipple“U+8”形埋线持续牵引法矫正乳头内陷
6.A Study on the Thermal Performance of Vertical U-tube Ground Heat Exchangers垂直U型埋管换热器的传热特性研究
7.System for Measuring U tube Heat Exchanging Performance of Ground Source Heat Pump地源热泵U型埋管换热性能测试系统
8.Unplasticized poly vinyl chlorid (PVC-U) pipes for buried drainage and sewerage systemsGB/T10002.3-1996埋地排污、废水用硬聚氯乙烯（PVC-U）管材
9.Analysis in Temperature Field and Thermal Response Around U-Type Vertical Ground Heat Exchanger of Ground Source Heat Pump;土壤源热泵垂直U型埋管温度场及热扰动分析
10.The Study of of Numeric Simulation of Temperature Field of U-vertical Buried Pipe of GSHP;土壤源热泵U型垂直埋管温度场数值模拟研究
11.Simulation of Borehole Heat Exchanger for a Ground-coupled Heat Pump;土壤耦合热泵U型埋管换热器数值模拟
12.The Studies of the Model for Vertical U-type Geothermal Heat Exchangers;U型竖直埋管地热换热器传热模型研究
13.Heat Transfer Analysis of Vertical U-tube Heat Exchanger for Ground Source Heat Pump System;土壤热泵垂直U型埋管换热器传热分析
14.Investigation and Experiment on U-Type Underground Heat Exchanger of Ground Source Heat Pump;地源热泵U型埋管换热器传热性能与实验研究
15.Studies on Performance of Vertical U-tube Underground Heat Exchanger with Outlet Tube Insulated垂直U型地埋管回水保温换热性能研究
16.Numerical Simulation of Vertical U-tube Underground Heat Exchanger for GSHP土壤源热泵垂直U型地埋管换热的数值模拟
17.The study of numeric simulation of heat transfer process of U-vertical buried pipe of GSHP土壤源热泵U型垂直埋管传热过程的数值研究
18.Numerical Simulation of Soil Temperature of U-pipe Geothermal Heat Ppumps地源热泵U型埋管土壤温度场数值模拟
相关短句/例句
U-shape vertical loop of pipe垂直U形埋管
3)U-tubeU型埋管
1.Study on the Heat Exchanging Performance of Vertical U-tube;竖直U型埋管换热性能的研究
2.The concept of maximum heat exchanger outflow temperature was introduced to quantify the thermal interference in vertical U-tube heat exchangers for ground-coupled heat pump(GCHP).通过引入换热器出口最高流体温度的概念,对地源热泵竖直U型埋管地热换热器的热短路现象进行了量化,基于竖直U型埋管周围的瞬时有限元模型,对影响热短路现象的主要参数(支管间距和回填料导热系数)进行了模拟分析,得出了量化结果。
4)U-tube ground heat exchangerU形地埋管换热器
1.Three-dimensional numerical simulation and heat transfer analysis for U-tube ground heat exchangers;U形地埋管换热器的三维数值模拟及传热分析
5)VGHE竖直U形地埋管换热器
1.This paper analyzed the design methods of the vertical U-tube ground heat exchanger(VGHE) based on the line-source model(LSM) and cylindrical-source model(CSM).介绍了基于线热源理论和柱热源理论的竖直U形地埋管换热器的设计计算方法。
6)single U shaped and double U shaped vertical borehole单U、双U型埋管
延伸阅读
燃料混合管压形缩管模陕西科技大学(陕西咸阳 712081) 刘俊生 周明贵 张喜涛[摘要] 介绍了一种在机械压力机上实现较长尺寸缩管工件的成形模结构。关键词 闭合高度 缩管 脱模1 引言 管材的缩管是常见的成形工艺，常用3种方法：1在缩管旋转机上进行；2在车床上旋压缩口，滚压加工；3用模具在压力机上进行。具体使用哪种方法，视工件要求而定。针对图1所示零件，采用压力机成形工艺比较合适。 根据零件尺寸，材料及计算结果，若在螺旋压力机或液压机上成形，由于工件成形所需压力很小，不能充分利用设备功率，且生产效率较低。故而选用机械压力机成形，模具设计中应重点解决由于工件缩管长度较长而引起的脱模困难，同时又要兼顾模具的闭合高度(在成形很小的情况下，模具闭合高度成为选用机床的主要因素)。2 模具结构 模具结构如图2所示。上内凹模2直接装在模柄上，夹持于滑块中，利用滑块中的打杆槽，装有上拉料黠构，上拉料结构由打料杆14，拉杆13，拉板12，螺栓8，顶杆10组成。下模板固定于工作台面，顶板9位于台面漏料孔中。其特点是：(1)利用冲床，滑块在缩门成形工序完成后拉动打料杆14，使与之连成一体顶杆10向上抬起，解决了由于工件缩口长度较长而引起的脱模困难。(2)顶板9置于工作台漏料孔中，即有效利用机床闭合高度，又减少于模具体积。3 工作过程 冲床滑块上升至上死点时，穿在滑块上的打料杆14带动上拉料组件以至最高点。放管材于定位板4的定位孔中。滑块下行，定位销3导正管材上端进入上凹模2定位孔中后，滑块施轴向力于管材端面．通过模芯11进行缩口，最后通过定位板4与上内凹模进行凸台压形，模芯11和上凹模2材料选用W18Cr4v，热处理硬度61—63HRC。同时，上拉料组件也随滑块一起下降之下死点，压形，缩口完成后，随着滑块一起上升的上拉料组件中的顶杆10抬起工件，取出工件。4 效果 该模具装于400kN偏心冲床（闭合高度300mm，工作台孔直径∮200mm）上，经过近十万件产品的生产，模具基本完好，满足了生产的要求。
