熱管傳熱能力 的英文怎麼說
中文拼音 [règuǎnzhuànrènénglì]
熱管傳熱能力
英文
power handling capability of heat pipe-
Second, the starting and stopping behaviors under disturbed condition are analyzed and calculated by using the dynamic concentrative parameter model, which gives some advice to better prescribe refrigeration system and set theoretic foundation for carrying out automatic control of refrigeration system. third, the normal running process is analyzed and calculated by means of rational matching theory, which gives some advice on how to better understand the parameter change under steady state and the affection of inlet - parameter on evaporator. fourth, the simulation software with dynamic characteristic is designed, which can be applied to calculate thernio - parameter of cryogen, air humidity and frost thickness under different initial and boundary conditions, and to carry out dynamic simulation under conditions of dryness, wetness and frostiness, at the same time, to achieve detection and simulation at any stage from starting to stopping
本文的主要內容如下: 1 )對翅片管蒸發器結構特點進行分析,選取適當的微元控制體,就干、濕和霜工況下對每個微元分別進行傳熱傳質分析,基於經驗關系式確定霜的有關參數,對于霜工況下的霜生長建立模型,經適當假設,運用質量守恆、能量守恆和動量守恆方程建立適合動態模擬的蒸發器數學模型,為系統模擬奠定基礎; 2 )對蒸發在大擾動下的開、停機過程,運用動態集中參數模型進行分析和計算,為更好地描述製冷系統運行的全過程奠定基礎,同時也為製冷系統實現自動控制提供一定的理論基礎; 3 )對蒸發器正常運行過程,運用動態分佈參數和參數間定量耦合的觀點來分析和計算,為更好地了解穩態工況下各點參數的變化情況及各入口參數對蒸發器動態特性的影響即蒸發器性能對各參數變化的敏感性; 4 )編寫翅片管蒸發器動態特性模擬計算程序,可以計算不同邊界條件和初始條件下的製冷劑熱力參數、空氣溫濕度和霜厚度分佈場,實現對翅片管蒸發器在干、濕和霜工況下的動態模擬。We can see than this kind of cpu thermal syphon cooling machine is the one with simple texture, easy working, low costs, reliable work and good performance
由此可知此種cpu重力熱管散熱器是一種結構簡單、加工製造方便、成本低廉、工作可靠且傳熱性能優良的換熱設備。The article elaborates the construction and principle of operation and process craft of the tube and corrugated fin rad i ator, and studies the heat transfer mechani sm and the fluid resistance characteristics of the tube and corrugated fin radiator
本文闡述了管帶式散熱器的結構、工作原理和加工工藝;研究了管帶式散熱器的傳熱及流動阻力特性;進行了散熱器性能強化的影響因素與有效途徑分析。With experiments and theoretical analyzing, we find when the heat discharge is smaller than the entrainment limited, what influences the ability of heat - transmitting of work quality is the quantity of injection and dry limit fluid inventory, the optimum quantity of injection of the three working fluid is 8 ~ 14g ; and the delivering factor that transmission coefficient is determined by capillary limit, not the heat transmission ability of the thermal syphon. therefore, among the three working fluid, acetone is the best. low wind - speed has the obvious function in heat transmission of the thermal syphon
本文通過實驗研究和理論分析,認為在熱流量小於攜帶極限時,影響工質傳熱能力的是cpu重力熱管的充液量和其乾涸極限,此次所實驗的三種工質,最佳充液量應當在8g ~ 14g ;傳輸因素主要決定普通熱管的毛細極限,而不是重力熱管傳熱能力的決定因素;三種工質中的最佳工質是丙酮;小風速時風速的變化對cpu重力熱管的傳熱有明顯的作用,但在風速大於1m / s以後,風速增加對于cpu重力熱管的傳熱能力的增加效果減緩。Air pressure drop and heat transfer performance for the automotive radiator
管帶式汽車散熱器流動阻力與傳熱性能分析Of the currently available coolers for electronic products with a high heat flux, microchannel heat sinks have been proved to be able to provide the best heat transfer performance and are one of the most promising coolers. the manifold microchannel ( mmc ) heat sink has many advantages such as low thermal resistance, compact structure, little amount of coolant, low flow rate, uniform temperature distribution along the flow direction and many others, so it is able to provide the best heat transfer performance : lowering the maxmal temperature and the temperature difference
在目前高熱通量電子產品冷卻器中,微通道熱沉已被證實是傳熱性能最佳且最具應用潛力的冷卻方式之一,而歧管式微通道熱沉因具有低熱阻、結構緊湊、所需冷卻液量小、沿流動方向溫度分佈均勻等優點則成為減小電子元器件換熱表面最高溫度、降低溫度變化的一種有效方法。One of the factors what impact on the miniature and improve the characteristics of twt is the thermal, which is produced after the twt begins to work
而影響到行波管小型化及進一步提高性能的一個重要因素是行波管的熱傳導能力。On the basis of present papers about semi - open thermosyphons, the heat transfer characteristics of the turbulence semi - open thermosyphon ( tsot ) were investigated both experimentally and theoretically
在前人有關重力熱管和半開式重力熱管的試驗研究和理論研究的基礎上,本文對一種新型的熱虹吸管進行了傳熱性能研究。It has a bright prospect for application. however, application of the heat pipe applied in the air - conditioning system just begins and there are still flaws abouts it which need to be improved. in this paper, associating heat feature of air - conditioning system with running environment, an inclined gravity heat pipe as the structure of the heat pipe heat exchanger in air - conditioning system will be studied
熱管作為一種高效的傳熱元件,有著諸多優點,但就目前而言,熱管用於空調系統能量回收利用的應用還處于推廣階段,本論文結合空調系統運行的環境,研究應用於空調系統的傾斜式重力熱管,它可以根據空調系統室外新風的季節變化,通過調節熱虹吸管的傾斜角度,實現全年的排風能量回收。The heat pipe exchanger has the advantages of compact, controlling erode of acid dew point, high efficiency, low pressure drop loss and reliability, so they are used widely in heat energy utilization and waste heat recovery. it is also helpful to recover the waste heat, save the raw materials and reduce the production costs. economic benefit from application is obvious
以熱管為傳熱元件的熱管換熱器具有下列特點:傳熱效率高,壓力損失小,工作可靠,結構緊湊,有利於控制露點腐蝕等,這些獨特的優點是它在解決能源問題,如:利用熱能、節約原料、降低成本等方面,特別是在工業余熱利用中發揮了越來越多重要的作用。It has big surface loaded and can heat the water medium quickly to meet the washing request. adopt inside fuser and outside water temperature sensor to make the heater securely. the surface of the heater with special bright treatment can reduce the adhesive force of the calcium ion and further reduce to produce the scale and prolong the life
本加熱器是洗衣機中加熱水用,其表面負荷較大,體積小,能使水介質快速加熱,以滿足洗滌要求。加熱管採用內置熔斷器及外裝水溫傳感器,增強加熱器使用的安全性,加熱管表面經特殊的光亮處理,使鈣離子的附著力減小,從而減少水垢的產生,延長使用壽命。Chart is constantly developing capabilities in their traditional markets as well as other emerging markets that require our skills as a provider of heat exchangers, process piping, vacuum insulated piping, cold boxes, and process vessels
除了為傳統行業提供服務外,查特還不斷提高研發能力,以滿足那些需要我們支持的行業的需求,如熱交換器,系統管道,真空絕熱管道,冷箱,及各種深冷容器。This experiment include many contents, in a word, that is summer condition experiment, winter condition experiment > summer - winter transition condition experiment and winter - summer transition condition experiment, furthermore summer condition experiment still include flux changing experiment and winter condition experiment still include thermal balance experiment this article dealt with the data of the test, calculating out energy absorbing ( energy discharging ) of buried pipe in winter condition ( summer condition ), input power of heat pump x heat exchanging of piece buried pipe length x co - efficiency performance ? op ( energy efficiency rate ? er ) and average heat exchanging coefficient ; in additiont this article compares the inlet water temperature and outlet water temperature of underground the first layer and the second layer buried pipe when heat pump was running, the results are that the heat exchanging ability of the second layer buried pipe outgos the first layer buried pipe, and heat exchanging is more stable ; and still analyse earth temperature resuming in the transition season. the results are earth temperature resume fast in the first week when the heat pump runs off
本文測試內容相當多,概括地說就是四個工況的測試,即夏季製冷工況的測試、冬季供熱工況的測試、夏?冬過渡季測試和冬?夏過渡季測試;另外在夏季工況的測試中還進行了變流量測試,在冬季工況的測試中還進行了熱平衡測試。本文對測試數據進行了處理,計算出了冬(夏)季工況埋管吸(放)熱量、熱泵空調器供熱量(製冷量) 、熱泵空調器輸入功率、埋管單位管長換熱量、供熱性能系數(製冷能效比)和平均傳熱系數等;另外,還比較了熱泵運行時地下一二層埋管進出水溫度變化情形,得出地下二層埋管換熱能力優于地下一層埋管,且換熱很穩定;並分析了過渡季地下一二層埋管溫度恢復情形,得出熱泵系統停機一周內地溫恢復特別快。Coverage of traditional topics has been updated, including sections on thermodynamics, solid and fluid mechanics, heat and mass transfer, materials, controls, energy conversion, manufacturing and design, robotics, environmental engineering, economics and project management, patent law, and transportation
涵蓋傳統的專題已經更新,包括章節熱力學,固體和流體力學,傳熱傳質,材料,控制,能源轉換,製造和設計,機器人學,環境工程,經濟學,項目管理,專利法,以及運輸。There are a lot of advantages when inner trachea applied in air pre - heater, such as the improvement of the temperature of pipe, the low consumption of metal, except for the increment of flow resistance. according to many related papers, it is more proper inner trachea with the structure of short distant between two whorls and shallow depth of whorl. it can enhance heat transfer with smaller flow loss
內螺紋管是一種異形管,和光管相比,管內側的換熱系數大大增強了,應用於空氣預熱器可以起到提高總傳熱系數、節約受熱面金屬消耗量的目的;同時提高了管壁溫度,能夠減輕低溫腐蝕的程度和速度;不足之處是帶來了更大的阻力損失。According to the theory of engineering thermodynamics and phase change, heat - transfer process of the special working fluid heat - pipe stove is analyzed. some hypotheses are postulated and with the help of equation of mass - conservation, energy - conservation, the dynamic concentrative parameter model is built, the change of each parameter is prescribed at any stage from starting to stopping. with the thermodynamic calculation of burnable process, the parameter of device, such as heat - transfer coefficient / thermal efficiency etc, are achieved under steady state ; based on theoretic calculation, observing the actual running circumstance of the heating stove in person, with some performance comparison between the new and the old, the high efficiency and reliability of heat - pipe stove is proved, the project which expend it in the oil - filed is feasible
對充入該工質的熱管加熱爐,本文根據工程熱力學和相變傳熱學及相關知識,對其進行了傳熱分析,經過適當假設,運用質量守恆和能量守恆定律,建立了裝置動態集中參數模型,描述了加熱爐從開機到穩定運行這一動態過程各參數的變化情況,同時對燃燒過程也進行了熱力計算,最終得到了穩態工況下裝置的換熱系數、熱效率等熱力參數;在理論計算的基礎上,親赴現場觀察該爐的實際運行情況,通過與原有的加熱爐的各項性能進行對比,最終證明新爐的高效性和可靠性,為其在油田中推廣的可行性提供了依據。A gravity heat pipe possesses heat diode characteristics and excellent transfer heat ability and equality temperature characteristics. the above features enable gravity heat pipes to use in the field of solar heat
重力熱管具有熱二極體特性,並且具有較強的傳熱能力和較高的等溫性,這使得熱管在太陽能的熱利用中得到應用。The bigger the diameter, the high the heat efficiency, but the weak the temperature increasing ability, length has less effect on the heat efficiency, tilt angle has less effect on the flow field and temperature field while it is larger than 30 degree, vacuum degree and emissivity have great effect on the flow field and temperature field while there is a great temperature difference between the liquid in the tube and the surroundings, the furring has less effect on the heat transfer but should be cleaned up in 3 - 5 years because of poor water quality, the higher the solar flux or the more the temperature difference between the liquid and the surrounding, the more the heat loss and the lower the heat efficiency
分析了各種因素對太陽能真空集熱管流場和溫度場的影響。直徑越大,熱效率越高,但升溫能力弱;長度對熱效率影響不大;傾斜角度大於30后,自然對流已經能夠充分進行,考慮以能夠吸收到最大太陽輻射為主;真空度和發射率對熱效率和溫度場影響很大,尤其是在介質溫度與環境溫度差異比較大時;水垢對傳熱影響較小但由於水質的問題應該被3 5年清洗一次;太陽輻射強度越大,介質溫度與環境溫度差異越大,熱損失越大,效率越低; 4A new design of fractal branching channel net for cooling of electronic chips is studied. based on the generation of a fractal branching net, heat transfer and the required pumping power for fluid flow in fractal microchannels and the parallel channels are compared
論文最後介紹了一種分形微管道網路,在給出其構造過程的基礎上,利用有限元法將其傳熱能力、所需泵送功率與平行微管道網路進行了比較。The testing method of heat transfer performance for gravity heat pipe
重力熱管傳熱性能試驗方法分享友人