temperature difference method 中文意思是什麼

temperature difference method 解釋
溫差法
  • temperature : n. 1. 溫度，氣溫。2. 體溫。3. 〈口語〉發燒，高燒。
  • difference : n. 1. 差異，差別。2. 不和，爭論。3. 【數學】差，差額。4. 【邏輯學】特殊性。vt. 〈罕用語〉區別，使有差別。
  • method : n 1 方法，方式；順序。2 （思想、言談上的）條理，規律，秩序。3 【生物學】分類法。4 〈M 〉【戲劇】...
  1. Standard test method for minimum resolvable temperature difference for thermal imaging systems

    熱成像系統用可分辨的最小溫度差的試驗方法
  2. Abstract : the paper established the idea of passive solar houses with zero - auxiliary heating source as well as the calculating method for the design and passive solar house. based on the ratio of radiant temperature difference i. e. thermal design and calculation method for passive solar houses with zero - auxiliary heating source

    文摘:著重介紹零輔助熱源被動式太陽房的概念及以輻射溫差比為設計依據的被動式太陽房熱工設計計算方法零輔助熱源被動式太陽房熱工設計計算方法
  3. Based on the refrigerant state, divides a heat exchanger into three zones with zoned lump method, i. e. superheat, two - phase and subcooling zones, works out the temperature difference and heat transfer coefficients of the three zones

    採用分區參數法將換熱器按製冷劑狀態分為過熱、兩相、過冷三區，分別計算了各區的換熱溫差、傳熱系數等。
  4. Abstract : this paper studies the structure, function and realization of ceramic / metal gradient thermal barrier coatings dynamic design software by combining the conceptions of thermal barrier coatings ( tbcs ) and functional gradient materials ( fgms ). through a typical example, it compares and analyses the simulation results of temperature field in the multiplayer gradient cylinder model calculated by analytical method, finite difference method and finite element method

    文摘:結合熱障塗層和功能梯度材料的概念，研究陶瓷/金屬梯度熱障塗層動態設計軟體的結構與功能及其實現過程.通過具體的例子，對多層圓筒模型的溫度場的解析解、差分解及有限元解的模擬結果進行了比較及分析
  5. Since the temperature difference was most important parameters in thermal effects calculation, a combined temperature difference method considered year temperature difference and day temperature difference was put forward. with the combined temperature difference obtained from field tests, a lot of calculations have been done by finite element method ( fem ), considering of different structural measures. the law of displacement and stress in cshbb was presented and a relative displacement formula was deduced

    在介紹小砌塊建築的溫度作用分析方法的基礎上對溫度作用計算中最重要的參數? ?溫差取值進行了探討，提出了同時考慮年溫差和日溫差影響的組合溫差取值方法；根據各種不同的組合溫差取值方法，結合現場實測數據給出了試點建築的組合溫差取值，並考慮了不同構造措施的影響，對試點建築進行了有限元的溫度效應計算；給出了小砌塊建築的位移變化規律和應力變化規律以及層間相對位移的計算表達式。
  6. The paper analyzes the non - lineal relations of the quantity of heat exchange and water flux of coil exchanger in part - load operating condition, the shortage of deciding the water flux in bypass pipe, the disadvantage that the operating condition of pumps and chiller ca n ' t be met with the load change of the air conditioning system in different operating condition of using pressure - difference bypassing control in primary water pump system. using load control method in the change of the operating condition of primary water pump system can realize that the load change is small and reasonable in the on / off condition of pumps and m m chiller by comparing load control method in primary variable - flow water pump system with pressure - difference bypassing control method, back water temperature control method

    本論文從目前空調工程中使用的變流量水系統入手，研究了盤管換熱器在部分負荷下水流量與換熱量的非線性關系，分析了文獻中介紹的旁通管通流能力選擇的不足之處和一次泵水系統採用壓差旁通控制時，工況轉換不能滿足系統控制要求的缺陷；比較了一次泵變流量水系統中壓差旁通控製法、回水溫度控製法、負荷控製法的精確性，並得出了在一次泵水系統的工況轉換時，採用負荷控製法能使冷水機組及其相應水泵在啟停時的負荷變化范圍較小，更符合建築物的冷量需求，節能效果較好的結論。
  7. By the comparison of calculation result with the tests result, it was concluded that the method to calculate the year temperature difference and day temperature difference from weather data was feasible. by this method, it was got that the statistic parameters of combined temperature difference in base period and the reliability to different anti - crack index was calculated the combination of thermal effects and load effects was considering in this paper

    對多年氣象資料進行了統摘要浙江大學博士學位論文2003計分析，將其轉化為結構的年溫差和日溫差，並與實測值進行了比較;在此基礎上得到了設計基準期內的結構組合溫差統計參數以及不同抗裂指標所對應的可靠度。
  8. It presents a mathematical heat transfer model of air and soil temperature in greenhouse basing on the theory of transmission of heat. the model calculates the heat diffuse coefficient of soil by difference method and establishes regression equation on experimental data by sas

    基於傳熱學的熱傳導方程，利用測試的地溫數據，選用差分法計算了土壤熱擴散率，應用sas軟體擬合了非線性方程，建立了日光溫室土壤溫度場的數學模型。
  9. Based on theoretical analysis and computational model, a three - dimension numerical simulation software 3c3d ( concrete cracking control 3d ) was finished in which finite element and finite difference method were both hired. compared with the known data, good agreement proved it reliable and practicable. finally, by means of the software, with variant of environmental temperature and relative humidity and different curing conditions, the variety regulation of temperature and humidity and the stress due to them within concrete were analyzed

    然後針對收縮開裂的本質因素即混凝土內部的溫度梯度和濕度梯度，進一步從理論上分析了高強高性能混凝土早期溫濕度場隨齡期發展的分佈情況，分析溫濕度變化與收縮變形的關系，建立了相應的計算模型，並且採用有限元和有限差分方法編制三維模擬系統軟體3c3d （ concretecrackingcontrol3d ） ，通過與已知數據的對比分析，驗證了該模型的可靠性和實用性。
  10. The transient mathematical equations are addressed for the coupled heat and moisture transfer by taking account of moisture accumulation procedure. an analytical method by means of the transfer function is proposed to predict the transient distributions of temperature and moisture content at different interfaces in walls. a numerical analysis approach based on an efficient finite - difference method is developed to deal with the procedure of coupled heat and moisture transfer in a multilayer wall with nonlinear boundary conditions considered

    建立了考慮濕積累過程的瞬態熱濕耦合模型，在方程中引入了濕積累項；發展了一種傳遞函數解析方法進行墻體內不同剖面處溫度和含濕量的動態預測；首次提出了一種基於有效有限差分法預測非線性邊界條件下多層多孔結構內的傳熱傳濕過程的數值分析方法，求解過程中考慮了瞬態邊界條件，從而避免了通常處理中由於邊界條件設定為常數而給計算帶來的誤差，對于多層結構每一層物性參數的非連續性，則採用了有效的有限差分逼近處理。
  11. The main contents and contributions include : ( 1 ) it has been proposed to uniform the temperature distribution through space modulating the intensity incident on the surface of substrate using a mask the emphasis of this method is to find the laser intensity distribution that can realize the temperature uniformity. the results show that when the mean temperature rise in the processed area is 500 k, the maximum temperature difference is 3. 5 k, which can meet the accurancy requirement of temperature uniformity

    計算結果表明，採用四環帶結構的掩膜板對入射光進行調制，在0 . 2倍光斑半徑區域內平均溫升達到500k時，最大溫差只有3 . 5k （ 0 . 4倍半徑處僅有4 . 5k左右） ，可以在激光微細加工區域得到比較滿意的溫度分佈。
  12. At the beginning of this article, we give the analysis about the principle of external condensation. we find out that the most important factor in the condensation is the temperature of the air in the system. and we point out the factors which can make influence in the external condensation, such as the temperature and the humidity of the environment, the temperature and the pressure of the supplying air, the load of the system, the area of passage of speed control valve, and so on. next, we give the mathematics model of the pneumatic system using the knowledge of aerodynamics and heat transfer theory. and using the finite difference method and the numerical analysis we can get the solutions of the model. we use c program to simulate the model

    本文首先對氣動系統外部結露的原理進行了分析，指出了氣動系統內部氣體溫度下降是氣動系統外部結露根本原因，提出了影響氣動外部結露的主要因素，包括環境溫度、環境濕度、供氣壓力、供氣溫度、氣缸負載和調速閥開度等。然後應用氣體動力學、氣體熱力學和傳熱學對氣動系統建立數學模型，用逆步進有限差分法和數值分析演算法對所建模型進行求解，利用c語言編製程序對氣動系統模型進行模擬，給出了氣管及氣缸內氣體的各個時刻的狀態參數。
  13. The effective heat - transfer temperature difference ( t _ i ) of every effect of multi - effect evaporation subsystem and the preheat temperature rise ( t _ ( p, j ) ) of every level of multi - level preheat subsystem of the design model were distributed by equal heating area, equal heat - transfer temperature difference, and free proration methods. the simulation of design has been conducted by matrix method combined with iterative method. the free proration method transformed the decision variables from t _ i and t _ ( p, j ) with complex restriction into _ i 、 _ p, jwith the value range of 0 1, and provided a simple and convenient method for optimum design

    操作型模型分別以t _ 0 、 t _ k 、處理量f _ 0 、出料濃度x _ （ az ）等不同控制變量為未知變量並採用矩陣法結合迭代法進行操作模擬計算;在操作模擬計算的基礎上，建立了復雜多效蒸發系統操作優化模型，該模型以濃縮成本最小為優化目標，以t _ k和f _ 0為決策變量，採用遺傳演算法結合矩陣法求解。
  14. Abstract : the mathematical model of dhcr heating of continuous casting slab is established, and solved by using the finite difference method, then the temperature distribution and heating time during different heating periods are found. this model can be used for determining the dhcr heating system of continuous casting slab

    文摘:建立了連鑄板坯直接熱裝加熱數學模型，並用有限差分法進行求解，獲得了各期加熱溫度分佈及加熱時間，此模型可用於連鑄板坯直接熱裝加熱制度的確定。
  15. The paper presents a solution method for the transient temperature field, in which the finite element method or the finite difference method is used to get discrete structure, and the finite difference method is used to get discrete time in order to simplify the transient thermal conductive equations as a set of linear equations as a set of linear equations at different moment

    本文提出對空間採用有限元法或有限差分法，而對時間採用有限差分法將瞬態熱傳導方程簡化為不同時刻的線性方程組以求解瞬態溫度場，用以求解大體積混凝土在固化過程中不同時刻的溫度分佈。
  16. Moreover, there are good fitted power function relationship between thermal conductivity and soil water content, soil water suction and salt concentration. meanwhile, based on the measured data of soil water content and soil temperature distribution under temperature - controlled conditions, according to philip ' s empirical equation, through difference method, the water diffusivity under temperature gradient was calculated, which can be expressed as a power function of temperature

    此外，研究表明，導熱率與土壤含水率、土壤水吸力、含鹽濃度之間均存在良好的冪函數關系；在取得一定溫控條件下的土壤水分與溫度分佈實測資料的基礎上，根據philip經驗方程，通過差分法計算得出溫差作用下的水分擴散率，該參數可表示為溫度的冪函數形式。
  17. In this paper, firstly, monolithic materials cosb3 and bi2te3 were prepared by sparkle plasma sintering ( sps ) respectively, and at the same time the microstructure of cosb3 and bi2te3 were studied by sem ; the seebeck coefficients and electrical conductivities of monolithic materials were measured by standard - four - probe method ( ulvac zem - 700 ) in a he atmosphere simultaneously, and their thermal conductivities were investigated by laser flash method ( tc - 7000 ) in vacuum. secondly, the junction temperature of graded bi2te3 / cosb3 thermoelectric materials was optimized based on the thermoelectric transport properties of monolithic materials, also when graded materials were used in the temperature difference ranging from 300k to 800k, the length ratio of monolithic materials cosb3 and bi2te3 were optimized in theory. thirdly, graded bi2te3 / cosb3 thermoelectric materials were prepared by two - step sps sintering, and the relationship between its average seebeck coefficients and temperature were calculated by theory mo del

    均質材料cosb _ 3和bi _ 2te _ 3的電導率和seebeck系數採用標準四端子法于he氣氛下在zem - 1上同時進行測量；熱導率採用激光微擾法（ tc - 7000 ）于真空狀態下進行測量；其次，在對均質材料cosb _ 3和bi _ 2te _ 3熱電傳輸特性研究的基礎上，對結構梯度bi _ 2te _ 3 cosb _ 3熱電材料的界面溫度進行了優化；為了使結構梯度bi _ 2te _ 3 cosb _ 3熱電材料在300k至800k的溫度范圍內具有最佳的熱電性能，本研究同時對梯度結構熱電材料當中均質材料cosb _ 3和bi _ 2te _ 3材料的長度進行了優化設計；第三，通過兩步放電等離子燒結的方法制備出了結構梯度bi _ 2te _ 3 cosb _ 3熱電材料；採用理論計算的方法研究了梯度結構熱電材料平均seebeck系數和溫度的關系；同時為了驗證設計的結果，本論文對結構梯度bi _ 2te _ 3 cosb _ 3熱電材料的開路輸出電壓和熱端溫度之間的關系及梯度材料在300k至800k的溫度范圍內使用時的功率輸出進行了相應的研究。
  18. To investigate the effect of different laminar cooling patterns on the microstructure and mechanical properties of plates in rolling process, the changes in temperature and microstructure of plate in such cooling process were calculated simulatively by coupling finite difference method with microstructural evolution models, thus predicting the ferrite grain size and phase composition under different cooling patterns

    摘要為了研究層流冷卻方式對中厚板組織和性能的影響，用耦合有限差分和微觀組織演變模型模擬計算了中厚板層流冷卻過程中的溫度和組織變化，預測出了不同冷卻方式下的鐵素體晶粒尺寸和相組成。
  19. Chapter one expatiates the significance and the development in this aspect at present. chapter two calculates the temperature distribution of crude oil in tank based on the finite cell method in resolving space problem and the finite difference method on time issue

    第一章首先闡述了該課題的研究意義以及目前在這方面的研究現狀；第二章利用有限單元法及有限差分法對艙內溫度場進行數值計算，得到模擬計算結果。
  20. Abstract : according to the site condition of the bisc, a mathematical model of two - dimensional unsteady solidification and heat transfer was established for the bloom caster in the mold. the mathematical model was solved with a finite difference method to characterize the temperature profiles and thickness of the solidified shell in the mold, the effects of casting speed on thickness of the solidified shell are also studied

    文摘:根據包鋼的現場條件，建立了大方坯連鑄機結晶器內二維非穩態凝固傳熱數學模型，採用有限差分法對數學模型求解，得出結晶器中鑄坯的溫度分佈規律和凝固坯殼生成規律，同時研究了拉坯速度對坯殼生成厚度的影響
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