蒸發製冷 的英文怎麼說
中文拼音 [zhēngfāzhìlěng]
蒸發製冷
英文
cooling by evaporation-
The former is to gain refrigeration volume through the process of adsorbing adsorbate ( cryogen ) by adsorbents ; while in desiccant cooling, solid adsorbent is used to remove the moisture from the surrounding
吸附式製冷是利用固體吸附劑對吸附質(製冷劑)的吸附過程而獲得冷量的。吸附除濕製冷是用固體吸附劑將空氣中的水蒸汽部分除去,並與蒸發冷卻等技術結合,達到製冷效果的製冷方法。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。The thesis focuses on the development of the dynamic simulation model of evaporators, the accomplishment of the stable and dynamic simulation of the parameters of cryogen - side, air - side and how to carry out dynamic simulation on the refrigerating effect of evaporators under different evaporating temperature and the realization of the analyses and calculations of the main parameters, such as, the wind speed of air - side and specific humidity etc, which affect the function of evaporators
本文重點是對蒸發器建立動態模擬模型,並對製冷劑側和空氣側參數進行穩態和動態模擬,同時對蒸發器在不同蒸發溫度下的製冷量進行了動態模擬,而且對影響蒸發器性能的主要參數(空氣側入口風速、入口含濕量等)進行了分析和計算。Miniature evaporator is a compact exchanger with small volume, light weight, and big heat transfer area per unit of volume. it is an important application in the field of cryogenics and refrigeration
微型蒸發器是一種體積小、重量輕、單位體積換熱面積大的緊湊式換熱器,在製冷低溫技術領域中有著重要應用。This paper researches diathermancy and fluidity of condenser, evaporator, compressor, and capillary in detail. maths models of condenser, evaporator, compressor, and capillary are established and model predigesting and modifying methods are done methods are given in this paper, which can transfer the practical system into the simulating system. in the basis of refrigerating system character, components models are modified in the system administrative levels
本文詳細研究了蒸發器、冷凝器、壓縮機和毛細管的傳熱特性和流動特性,建立和發展了蒸發器、冷凝器、壓縮機和毛細管數學模型,並進行了相應的模型簡化和修正方法研究,建立了從實際系統到模擬系統的轉換方法;本文針對各製冷系統的特點,在系統層次上進行了部件模型的修正研究,建立了相應的修正模型和演算法。Suction gas pressure goes up as the compressor run at the lower speed in the lower burthen, and this is beneficial to lower systems energy - consume. when the system is controlled by wvf, the discharge change of the evaporator is not linear ; the electronic expansion valve is adopted to regulate the system superheat degree, and the controlled object is parameter time varying, accordingly, the time varying controller should be adopted
在負荷較小時,壓縮機採用低速運轉,吸氣壓力升高,這對系統降低能耗是有利的;變頻控制時,蒸發器製冷劑流量的變化並非線性;系統中採用電子膨脹閥進行過熱度控制,被控對象具有參數時變的特性,相應地宜採用變結構的控制器。They used for making tubes of condenser or vapourizer of refrigeration, for waterfeeder, for capilliary tube in meters and oil - conducting pipe union for mechanical equipment
該產品廣泛應用於機械、電氣儀表、汽車、輕工、化學工業等部門,作為製冷設備的冷凝器,蒸發器管、供水熱水管,儀表毛細管及機械設備聯結油管等部件。They used for malcing tubes of condenser or vapourizer of refrigeration, for waterfeeder, for capilliary tube in meters and oil - conducting pipe union for mechanical equipment
該產品廣泛應用於機械、電氣儀表、汽車、輕工、化學工業等部門,作為製冷設備的冷凝器,蒸發器管,供水熱水管,儀表毛細管及機械設備聯結油管等部件。Eev should be selected for various refrigeration systems according to the thermal properties of refrigerants ; the discharge coefficient of eev is sensitive to the aperture and impulse quantity of eev ; when the eev structure is made, the discharge coefficient goes up with the lowering of evaporation temperature or goes down with the hoisting of the condensation temperature. it is le
對于不同工質的冷藏集裝箱製冷系統,電子膨脹閥應該根據具體製冷劑的熱力性質選取;電子膨脹閥流量系數對孔徑和脈沖數比較敏感;在結構固定時,流量系數隨蒸發溫度的降低而升高,隨冷凝溫度的增加而增大,受過冷度變化的影響較小;電子膨脹閥的容量受孔徑影響最大。The analysis indicates that in the absorbing refrigeration cycle using tfe - tegdme working fluid under the same evaporating temperature and condensation temperature, the performance of the simplicity cascade cycle is the best while the heat burden of the generator is the maximum, the performance of the mid - pressure double - effect cascade cycle is the worst while the heat burden of the generator is higher than the basic gax cycle
分析結果表明,採用以tfe - tegdme為工質吸收式製冷循環,在同樣的蒸發溫度和冷凝溫度下,單純復疊循環性能最為優越,但發生器的熱負荷也最大;中壓雙效循環性能最差,而且發生器的熱負荷要比基本gax循環大,運行的經濟性差。Built in air cooling guides, made of reinforced high performance plastic, provide fast cooling after evaporation
內置空氣冷卻系統,由加強型高性能塑料製成,蒸發后快速冷卻。With the viewpoint of dynamic and distributed parameters and parameters qualitatively coupled, computing modules of evaporator, gascooler, internal exchanger are programmed. in addition throttling valve and compressor are programmed. following are the main points of this thesis
本文從製冷系統模擬的角度,用動態分佈參數及參數間定量耦合的觀點考察了蒸發器、氣體冷卻器和回熱器,編制了各個部件相應的計算程序。Temperature kits : contact must be properly fixed in the evaporator export pipelines, real - time communication evaporator components to temperature degrees, the material will be filled through interlinked capillary pressure due to the expansion of corrugated boxes ; swelling corrugated boxes on the pressure for change in the thrust pole with an adjustment screw and spring - loaded ball - type valves to adjust the resistance of the degrees of refrigeration volume precision adjustments
感溫包:是必須妥善接觸固定在蒸發器的出口管道上,感知蒸發器實時回氣溫度的部件,它將充填物質的熱脹冷縮壓力通過相通的毛細管提供給膨脹波紋箱;膨脹波紋箱依據壓力的變化推動推力桿結合過熱度調整螺絲和彈簧的阻力來調整球型閥的開度,實現製冷量的精確調整。The plate - tube evaporator, the single back - fin evaporator and the box condenser. after analyzing the physical model and setting up the mathematical model according to the two - phase flow of adiabatic capillary tubes, it also numerically simulates and analyzes the different effects of main parameters on the capillary tube length. based on the heat transfer analysis and counting of thermal insulation layer, the cad system accomplishes the parametric design and drawings of the refrigerator body
該系統完成了對典型製冷裝置的換熱器部件,如板管式蒸發器、單脊翅片管式蒸發器、箱壁式冷凝器的參數化設計和繪圖;分析了絕熱型毛細管兩相流的物理模型,並建立數學模型,對絕熱型毛細管各主要參數對其長度的影響進行了數值模擬和計算分析;基於對電冰箱箱體絕熱層厚度的傳熱分析和計算,完成了整個箱體的參數化設計和繪圖工作。Evaporative cooling has been regarded as a new cooling technology on hydro - generator, and it not only could increase the ratio of material utilization and reduce the difficulties of making large - scale hydro - generators, the running difference in temperature, the stress of the generator ' s stator and the possibilities of the incidental occurrences, but also has better performance than internal water cooling
蒸發冷卻作為水輪發電機的一種新型冷卻技術,不僅可以提高材料利用率,減小特大型發電機製造難度,降低發電機定子繞組運行溫差和發電機定子的應力,減少事故隱患,更重要的是蒸發冷卻比水內冷具有更好的優越性。According to the thermodynamics theory of vapor compression refrigeration cycle, hfc - r134a is chosen as refrigerant fluid and the thermodynamics calculation of refrigeration system is accomplished, which is based on the table of r134a thermodynamics characteristics and estimate of portable refrigerator ' s calorific burthen
本文根據蒸汽壓縮式製冷循環的熱力學原理,從小冷量、小體積的便攜式冷藏箱的熱負荷計算出發,以所選用製冷劑( r134a )的熱力性質表為依據,進行了製冷系統的基本熱力計算。By analyzing the mechanism of boiling heat transfer and pool boiling, the model of evaporative cooling transformer, on which pool boiling heat transfer experiment has been finished, was designed and made
通過對沸騰換熱機理和大容器沸騰換熱的分析,提出了蒸發製冷變壓器模型,並在該模型上對自行研製的全氟三乙胺進行了大容器沸騰換熱實驗。According to the study of this project, we discovered the perfluorotriethylamine, a environment - protection evaporative cooling agent, and carried through the research on the process of fabricating, thermal nature, and heat exchange experiment on the evaporative cooling transformer model
通過對相變降溫的研究,我們找到了一種環保型的蒸發製冷介質? ?全氟三乙胺。對其制取過程以及其熱物性進行了研究,並在蒸發冷卻變壓器模型上對其進行了換熱降溫實驗。This facility is used to measure the refrigerant distribution in components of a refrigeration appliance, including compressor, evaporator, condenser, receiver, accumulator, liquid line, etc, under different working conditions, such as start - up, steady state or shut - down
測量製冷裝置在開機、穩定運行、停機等不同工況下,包括壓縮機、蒸發器、冷凝器、集液器、氣液分離器、液管等在內的各個部件,製冷劑的質量分佈。The vaporize, condense, overflow and guide plate inner are made in stainless steel
蒸發鍋、冷凝管、溢流壩和內部導流板都用不銹鋼製成。分享友人