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。
Modal analysis of the fin heat exchanger using fem
翅片式換熱器模態的有限元分析
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一般壓力表氣壓表抗震壓力表充油壓力表全不銹鋼壓力表膜盒微壓表電接點壓力表冷媒壓力表真空壓力表壓力真空表隔膜壓力表微型壓力表差壓表微差壓表絕壓表精密壓力表耐高溫壓力表蒸氣壓力表汽車燃氣壓力表醫用壓力表遠傳壓力表衛生型壓力表壓力表緩沖管壓力表冷凝散熱器壓力表
翅片散熱器壓力表開關不銹鋼連接彎管不銹鋼連接軟管轉換接頭油壓連接頭壓力表針閥節流閥及過壓保護附件濾油網加油口油溫油麵計雙金屬溫度計等。
The operation efficiency for the improved device shows that the service life is 2 times of unimproved exchanger with a high operating stability
改造后的運行效果表明，縱向
翅片管式換熱器的使用壽命是改造前的2倍，且運行平穩。
The components of this system are a cross - flow finned - tube evaporator, cross - flow finned - tube gascooler, a reciprocation compressor, a gas - liquid seperator, a double pipe internal heat exchanger and a throttling valve
系統由一個叉流
翅片管式蒸發器、一個叉流
翅片管式冷卻器、一臺往復式壓縮機、一個氣液分離器、一個套管式回熱器、一個節流閥組成。
Analysis is made on structure characteristics of the finned - tube, and analysis has been made on the special heat and mass transfer principle of every micro - unit under both dry and wet conditions. appropriate hypothesis is made and based on the energy, mass and momentum equivalent, the evaporator models of dynamic distributed parameters are set up. in addition, the gascooler and internal exchanger models of dynamic and distributed parameters, the throttling valve models and the compressor models are set up, too
本文的內容如下： 1對
翅片管蒸發器的結構特點進行分析，選取適當的微元體，對于干、濕工況下每個微元分別進行傳熱傳質分析，通過適當的假設，利用質量守恆方程、能量守恆方程和動量守恆方程建立了蒸發器的分佈參數數學模型；對回熱器劃分微元建立了分佈參數數學模型；對氣體冷卻器建立了分佈參數數學模型；對壓縮機建立了數學模型；建立了節流閥的數學模型，為系統模擬奠定了基礎。
The heat - exchange apparatus is the window for air - conditioner to exchange energy with outside. we analyze the efficiency of heat - exchange apparatus by the theory of heat - transmit, and compare the advantage and disadvantage of different type evaporator ' s and condenser ' s design by lots testing, and compare the effect of heat - exchange for different type flake, and compare the effect of heat resistance for different stretch of copper tube and flake. then we get many useful results from those different comparing
蒸發器與冷凝器統稱為換熱器，換熱器是空調器與外界進行能量交換窗口，利用傳熱學原理對換熱器的效率進行分析，通過大量的試驗比較不同的蒸發器，冷凝器設計方案的優劣；比較冷凝器使用不同
片型對換熱效果的影響；比較銅管與
翅片的不同脹緊對熱阻的影響，通過比較得出很多有用的結論。
Take the technical reform on longitudinal finned tubular oil / heating agent heat exchanger operated in ( superscript # ) 2 platform of chengdao oilfield center as an example, this paper analyzes 3 failure modes of this kind of heater and presents relative improvement measures
摘要以埕島油田中心二號平臺縱向
翅片管式原油熱媒換熱器技術改造為例，分析了縱向
翅向管式換熱器常見的3種失效形式，並指出了其相應的改進措施。
Numerical model of plate - fin - evaporator heat transfer performance
翅片式蒸發器換熱性能的數學模型
In practice, changing the belt wavelength, comparing the heat transfer performance of the single row tube and single wave belt with the single row tube and double waves belt, double row tubes and double waves belt, three row tubes and single wave belt, i draw a conclusion that the single row tube and double waves belt is the best
在實踐上，通過改變
翅片波距w ，比較單排單波帶、單排雙波帶、雙排雙波帶及三排單波帶散熱器的傳熱性能，得到單排雙波帶傳熱效果最佳的結論。
Coil tightly the stainless steel radiator wing around the electric heating pipe to enlarge the radiating area of the heating tube surface and the heater radiates more quickly, have higher heat use rate and the power density of the heater will be improved. structure sketch
分體機用
翅片加熱器，是電加熱管上緊密繞制不銹鋼散熱
翅片，它增大了加熱器表面的散熱面積，使加熱器散熱更快，熱利用率更高。
Finned tube is welded the finned helix pieces on the smooth tube, expanding 4 ~ 10 times of the heat transfer surface, highly elevated the heat - transfer coefficient of the tube to reach the purpose of rapid, efficient heat transferring
翅片管是在鋼管外表面焊上螺旋型
翅片，擴展外表面傳熱面積4 10倍，大幅提升管子的傳熱系數，達到高效快速傳熱的目的。
Under the guidance of the above method, the type of hampson heat exchanger for mixed - refrigerant j - t coolers is designed. 3
闡述了混合工質熱交換器的設計方法，對
翅片管繞管式換熱器（ hampson型）進行初步設計； 3
A forced convection finned tube exchanger model with constant blast volume was constructed and its reliability was confirmed by the performance test
摘要建立了恆流條件下的強制對流
翅片管式換熱器的結霜模型，並用實驗結果驗證了模型的可靠性。
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。
For the optimization function of hrsg, the cool costs is considered as the objective function and the variables are the number of row, the number of tube per row, the horizontal distance and vertical distance between tubes of the evaporator and the economizer
建立了以bchp系統的冷量成本為目標函數，以余熱鍋爐排煙溫度、蒸發器和省煤器中螺旋
翅片管管排數、每排管數、管束橫向節距和管束縱向節距為決策變量的余熱鍋爐優化模型。
It is shown that the fin efficiency, air flow - rate, and fin performance are significantly decreased while pressure of the air side is increased when frosting occurs at the exchanger
研究發現，換熱器結霜引起了
翅片效率、空氣流通率及
翅片性能的顯著降低，同時還伴隨著空氣側壓力降上升。
The machine designed for expanding tubes inserted into the fin parcel, in order to get a compact coil and thus obtain thermal exchange
產品說明:該機是管
片式熱交換器的散熱
片與換熱管的漲接設備，經漲管后，使管、
翅片緊密漲接為一體以達到較高的熱交換率。
Finally, three foundational principles are presented for the optimal design of the fin system with lower flow resistance and higher heat transfer rate
在此基礎上，提出並理論證明了低阻力高傳熱的翅片結構的優化設計應遵循的三個基本原則。
