能的利用系數 的英文怎麼說
中文拼音 [néngdelìyòngxìshǔ]
能的利用系數
英文
coefficient of utilization of energy-
The iterative learning control has been raised as a new control concept. by correcting the current control command using the previous system error data instead of the exact system parameters, iterative learning control can effectively suppress the vibration of the highly periodic system
迭代學習控制不需知道系統的具體動力學參數，只要系統運動具有一定周期性，它便能利用系統先前的控制經驗和輸出誤差來修正當前的控制信息，從而達到良好的控制效果。This paper starts the research of the liquid floated pendulous accelerometer testing system according to the engineering. at first, this paper gives the brief introduction of the history and present status of accelerometer and its testing technology, the working principium and math model of the liquid floated pendu - lous accelerometer, and then, decides the binary width pulse force retrim loop as the design proposal of testing system, researches the transfer function of every part in the system emphasizly, analyses the stability of the whole accelerometer testing system from the angle of control theoretics by the open loop transfer function of system, and designed the correcting net, analyses the basal problems such as resolution, sampling restraint, precision and so on, designs the hardware testing circuits such as preamplification, band - pass filter, alternating amplifier, phase sensitive demodulatorn, pulse - width modulation, frequency scale circuit, moment current generator. finally, using the graphics program language labv - iew which is designed for testing field especially by ni accomplishes the solfware design of testing system, realized the testing functions
首先對加速度計及其測試技術的發展歷史和現狀，液浮擺式加速度計的工作原理和數學模型等作了簡要的介紹，然後確定了以二元調寬脈沖再平衡測試迴路為設計方案，並從控制理論的角度進行了分析，著重研究了系統中各部分的傳遞函數，利用系統開環傳遞函數分析了系統的穩定性，同時設計了系統的校正網路;分析了二元調寬脈沖再平衡測試迴路的解析度、采樣約束以及測試精度等基本問題，並按照系統分析的結果設計了包括前置放大、帶通濾波、交流放大、相敏解調、脈寬調制、頻標電路以及力矩電流發生器等測試系統各部分硬體電路，驗證了電路的正確性，最後按照測試系統的要求，採用了美國ni公司專為測試領域所開發的虛擬儀器工具? ? labview作為測試軟體開發工具，利用該圖形化編程語言完成了測試系統軟體部分的設計，實現了測試功能。This paper is to analyze the fact that the scale of coastal ports is becoming larger and larger and that the increase of coal transportation has already demand the better equipments in coal harbors and shipping quality, to forecast the consumption of coal transportation in the future and to point out the developing trend of coal transportation. the paper uses the method of determining the nature and quantity. the sea coal quantity is forecast by using the detailed transportation in different coastal harbors it evaluates the capacity of different harbors by contrasting true transportation with the deigned capacity
本項研究採用了定量和定性相結合的方法：煤炭運輸的未來需求主要是應用現有港口吞吐量數據進行預測；對現在港口設施的利用情況以及港口的煤炭通過能力也根據碼頭泊位與實際通過量的對比作以定量分析，文中還大量的運用了系統方法和原理，對我國煤炭運輸的現狀及其市場的發展進行了詳細闡述，最終提出了解決現有不足的對策。Based on developed experimental testing facility, the shading performances of southing horizontal shading devices, vertical shading devices and integrative shading devices of external windows are measured, the performance parameters including indoor temperature, air - conditioned cooling load and shading coefficient as so on. and the shading coefficient of experimental test results and calculation results based on design standard for building energy efficiency are compared, and the windows5. 2 simulation results are compared also. the measured results are consistent with the calculation results of horizontal shading devices and vertical shading devices
本文利用研製的建築遮陽性能檢測裝置，對南向水平遮陽板、垂直遮陽板和綜合遮陽板外窗的遮陽性能（包括室內溫度、空調耗冷量和遮陽系數等）進行了實驗測試，並對遮陽系數的實驗測試結果與節能設計標準的計算值以及windows5 . 2軟體的模擬結果進行了比較分析，測試結果表明水平遮陽板和垂直遮陽板外窗的遮陽系數與計算結果比較一致，相對誤差分別為2 . 5 %和4 % ，而綜合遮陽板外窗的遮陽系數與計算結果的差值比較大，相對誤差達到10 %以上。Evaluates and compares the workshop performance by velocity asymmetry coefficient ku, temperature asymmetry coefficient ki, the age of air, the temperature efficiency 77 and pmv - ppd index
廠房內的氣流組織採用速度不均勻系數k _ u 、溫度不均勻系數k _ t 、能量利用系數、空氣齡、 pmv - ppd指標進行綜合評價和對比。Creep analysis methods of high - rise buildings and large span buildings can only refer to creep coefficient method in bridge engineering or the method of degree of creep in hydraulic construction engineering under the present experiment conditions. in this paper, the incremental expressions of concrete creep and shrinkage strain when the initial computational age is not the same as the loading age are derived and corrected from the concept of concrete creep coefficient and the mean value theorem of integral and the principle of superposition. the differences of efficiency and accuracy of creep analysis between the finite element method with creep coefficient and the initial stress method with degree of creep are presented. this paper suggests that engineers should use the initial stress method with degree of creep to estimate the influences of creep on high - rise buildings and large span buildings on the basis of conceptual design
基於現有的試驗資料，高層及大跨度民用建築的徐變分析只能參照橋梁結構中的徐變系數方法或水工結構中的徐變度方法進行.從徐變系數的定義出發，利用積分中值定理和疊加原理，推導並修正了加載齡期與起算齡期不同時徐變收縮應變增量的表達式，對比了應用徐變系數分析徐變的有限元法和應用徐變度分析徐變的初應變法在效率和精度上的差別，並建議應從概念設計的角度出發，採用徐變度的初應變法來估算徐變對高層及大跨度民用建築的影響Abstract : creep analysis methods of high - rise buildings and large span buildings can only refer to creep coefficient method in bridge engineering or the method of degree of creep in hydraulic construction engineering under the present experiment conditions. in this paper, the incremental expressions of concrete creep and shrinkage strain when the initial computational age is not the same as the loading age are derived and corrected from the concept of concrete creep coefficient and the mean value theorem of integral and the principle of superposition. the differences of efficiency and accuracy of creep analysis between the finite element method with creep coefficient and the initial stress method with degree of creep are presented. this paper suggests that engineers should use the initial stress method with degree of creep to estimate the influences of creep on high - rise buildings and large span buildings on the basis of conceptual design
文摘:基於現有的試驗資料，高層及大跨度民用建築的徐變分析只能參照橋梁結構中的徐變系數方法或水工結構中的徐變度方法進行.從徐變系數的定義出發，利用積分中值定理和疊加原理，推導並修正了加載齡期與起算齡期不同時徐變收縮應變增量的表達式，對比了應用徐變系數分析徐變的有限元法和應用徐變度分析徐變的初應變法在效率和精度上的差別，並建議應從概念設計的角度出發，採用徐變度的初應變法來估算徐變對高層及大跨度民用建築的影響Based on the first and second laws of thermodynamics and energy level theory, analyses the primary energy ratio, exergy efficiency and energy level difference of the household gas driven air conditioner at different conditions, and compares them with some other commonly used modes
摘要運用熱力學第一定律、第二定律和能級分析理論，對戶式燃氣空調各種工況下的一次能源利用系數、 （火用）效率和能級差進行分析，並與幾種常用的方式進行對比。Compared with fix - pitch wind turbine, the variable - pitch wind turbine has the virtue : stable output power over rated power, high wind power coefficient, holding rated power at high wind speed, good starting and shut - off etc.
變槳距風力發電機組與定槳距風力發電機組相比，在額定功率點以上輸出功率平穩、具有較高的風能利用系數、能夠確保高風速段的額定功率、起動性能與制動性能好等特點。This paper analyses current situation of chp and situation of development, use evaluating energy utilization - - based on electricity comparing with state calculated method - - based on heat, calculates the operating data of baotou second thermal power plant heat supply system ， extends the study of heat supply performance to heat net and heat consumer, synthetically analyses heat load characteristic 、 pipe net property and heat supply distance witch effect heat supply cost. the paper studies the thermal power performance of thermal power plant total energy system, discuss heat supply cost which effect the development of chp
本文對熱電聯產的現狀及發展情況進行分析，採用能源利用系統性能評價指標體系及其評價指標? ?電量法與國家目前採用的法定計量方法? ?熱量法進行比較，通過對內蒙古包頭第二熱電廠供熱熱源系統及供熱熱網系統的熱電聯產運行數據進行分析計算，將供熱過程的熱力性能研究延伸至熱網和熱用戶，分析用戶終端的能源利用情況，針對內蒙古地區主力機組和地區條件，綜合分析了熱負荷特性、管網性能及供熱距離對供熱成本的影響，研究了熱電廠總能系統的熱力性能，對困擾熱電聯產的供熱成本進行了探討。High speed : high efficiency and low resistance moment, under the same conditions, the generator speed can reach at 1. 5 or 3 times of the normal generator ' s, so it can be make good use of
轉的快：電機輕快高效，阻力矩極小，同等條件下，轉速是其它電機轉速的1 . 5到3倍，風葉的風能利用系數更高，可以發更多的電。In the analyse of gradation and classification the study use the method of factors and the dynamic model of sum taking the weight and make revision with the land use coefficient and the land economic coefficient. the grade of synthesize not only reflect the effect to each factor but outstand the leading restrict factor
應用因素分析法對區域農用地的等級進行了研究，採用動態加權求和模型作為指數綜合的方法，再用土地利用系數和經濟系數進行修正，使綜合分值既能反映出每個因素對農用地質量的影響，又能突出主導限制性因素的作用。This paper states the situation of our countrys solar energy utilization, indicates the background and possibility of solar energy heat pump utilization, and gives the energy balnce equation of instruments in this system in view of typical solar energy heat pump system
針對我國太陽能的利用情況，指出利用太陽能熱泵的背景與可能性，並針對典型太陽能熱泵系統，給出此系統各設備（包括集熱器、蒸發器、冷凝器和蓄熱器）的能量平衡方程，分析了太陽能熱泵系統的供熱性能系數。According to thermal state similitude model experiment of the langya mountain hydropower station, we adopt different velocity of air ventilation and exclude air proportion of upriver and downriver, this paper contrast the air distribution of the dynamo floor on each method, and educe the best projects of arch crest supply air that adapt to langya mountain hydropower station ’ s dynamo floor : g = 17. 4 10 ~ 4m ~ 3 / h, 22 vents, d = 600mm, the scale of volume 1 : 3, t0 = 16. 9. it ’ s also thought that improved any side of volume can reduce its temperature. when study on the air supply of langya mountain hydropower station ’ s underground dynamo floor by cfd software, it proved that cfd software is correct when compare with model experiment. when arrange the number of 5 kinds of vents, it concluded that the number of vents 14 to 22, it can ’ t change velocity, in 36 to 40 can lead to reduction of velocity. when vent in 14 to 36, the parameter kt doesn ’ t change, when the number is as large as 36, kt reduces
在此基礎上，模擬了5種風口布置方案和送風量的改變對發電機層溫度場和速度場的影響，獲得了些可供參考的結論:在風量和送風速度不變的條件下，風口個數在（ 14 ~ 22 ）小范圍變化時，工作區平均風速基本不變，大幅度增加風口個數（ 36 ~ 44 ）就會導致工作區平均風速的降低，風口數在14 ~ 36之間對工作區的溫度不均勻系數影響不大，當風口數> 36時，溫度不均勻系數隨著風口數的增多而變小，速度不均勻系數一直隨著風口數的增加而減少;在風口布置和尺寸不變的情況下，送風量變化時，工作區平均溫度隨送風量增大而降低，平均溫度的降低量逐漸趨于減少，能量利用系數先是隨著送風量的增加而增大，后隨送風量增加而減少。In order to analyze quantitatively and evaluate classifiably agro - ecoclimatic resources, based on average data of multiple years from 165 meteorological stations of northwest china ( gansu, ningxia and qinghai ), resource indices cr, efficiency indices ce and utility coefficient k were calculated by applying the dynamic models of agro - ecoclimatic suitability degree. then, based on month to month average data of multiple years of efficiency indices ce, twelve types of agro - ecoclimatic resources were identified through the analysis of fuzzy cluster. the results indicated that latent potentialities, matching condition and utility degree of agro - ecoclimatic resources have obvious characteristics of spatial differentiation. on the basis of the calculation results, the suggestions about exploitation and utilization of the agro - ecoclimatic resources in northwest china ( gansu, ningxia and qinghai ) are put forward
為了量化分析和分類評價農業生態氣候資源，根據西北地區（甘寧青） 165個氣象臺站多年平均的氣候資料，採用農業生態氣候適宜度的動態模型，首先計算了農業生態氣候的資源指數、效能指數和利用系數；然後通過對多年逐月平均效能指數的模糊動態聚類，劃分出農業生態氣候資源的12個類型並進行了相應評價，結果表明農業生態氣候的資源潛力、匹配狀況和利用程度具有明顯的地域分異特徵，進而在此基礎上提出了開發利用農業生態氣候資源的若干建議。The effects of a wide variety of parameters such as the velocity, the temperature, the inlet moisture content of the primary and the secondary airflow, the channel width on basic thermodynamic criterion, such as thermal efficiency, exergy efficiency, exergy efficiency ratio, thermodynamics consummation, exergy destruction rate, exergy destruction coefficient, are simulated numerically
在此基礎上，通過一些基本的熱力學指標，如換熱效率、火用效率、熱力學完善度、火用損率、火用損系數等，對間接蒸發冷卻過程能量以及有用能的利用、損失情況進行了分析和研究。The paper analyses the control principle of general several intelligent lighting control methods, analyses their advantages 、 disadvantages, applications, and the proceedings should be paid attention to in the applications ; analyzes the characters and applicable scope of common several interior illumination calculation methods ( the point method 、 the coefficient of utilization method 、 the unit capacity method ), designs a lighting system for a living room ; and brings forward to the system function of easy home lighting intelligent control system, studies design ways of its software and hardware. the system uses at89c51 micro - controller, programs with assemble language, uses effective anti - jamming measures to ensure it operates reliably
論文分析了現有常用的幾種智能照明控制方式的控制原理，優、缺點，使用場合，以及在使用中應注意的事項；分析了常用室內照度計算的幾種方法（逐點法、利用系數法、單位容量法）的特點和適用范圍，設計了某一起居室的照明系統；並提出小康住宅智能照明控制系統的系統功能，研究了該系統的軟、硬體設計方法，採用at89c51微處理器作為控制器，用匯編語言編程，並採取有效的抗干擾措施以確保其運行可靠性。Abstract : the paper studies the important technique and index in application scope ， equipment configuration ， operating duty ， energy consumption ， irrigation application efficiency and economic benefit of pipe - sprinkler combined irrigation, and presents the usage method of the low - pressure pipe and multi - hole micro - sprinkler ribbon combined system
文摘:針對管噴結合灌水技術的應用范圍、設備配置、運行方式、能耗、灌溉水利用系數以及效益等關鍵技術及指標進行了探討，並提出了低壓管道和多孔式微噴帶結合系統的使用方法。The advanced development on the new kinds of scroll profile has become the research focus in the profile design. used a new type scroll compressor of the combination profile in this paper, a scroll is constructed following this : the inner turn consists of the standard involute of circle, and the same to the outer turn. then the middle turn is one of arc
本文所研究的新型組合曲線渦旋壓縮機最內圈以基圓漸開線構成，中間段以圓弧過渡，最外圈由圓漸開線構成，能發揮不同型線的優勢，是一種能滿足多性能較優要求、形狀性態良好的渦旋型線，與傳統的基圓漸開線構成的渦旋壓縮機相比，具有效率高、泄露量少、體積利用系數大等優點。This paper utilizes the software matlab to program the each working volume. it helps to analyze the volume change curve. at the same time, comparison with combination profile compressor and single circle compressor is presented, with the result that combination profile compressor has the advantages of high efficiency, little leakage and high quotient of volume using
論文運用matlab數學軟體對新型組合曲線渦旋壓縮機的各個壓縮腔的容積進行了編程運算，對各個壓縮腔容積的變化規律給出了幾何直觀的描述，並且對組合曲線壓縮機和圓漸開線的壓縮機進行了性能對比分析，證明組合曲線渦旋壓縮機具有效率高、體積利用系數大等優點。分享友人