熱水負荷 的英文怎麼說
中文拼音 [rèshuǐfùhé]
熱水負荷
英文
water heating load-
This article aims at the boiler ' s problems in operation : 1 ) under nominal load, the smoke temperature at the outlet of hearth reaches 1200, far more exceeds 1050 the original designed temperature. this will always result in slag inside boiler and the temperature of overheater ' s pipe superheat, so that boiler cannot take nominal load and all these influence boiler ' s nomal operation heavily, 2 ) this article also studied the reason why the assistant oil becoming necessary when coal changes. during the nomal operation, many factors ( makeup of combustor and its disposal, smirch and encrust of water wall, excessive air coefficient, temperature of primary air, coal type and density of coal dust ) can deviate the designed working conditions, then affect the boiler ' s nomal operation
本文針對該鍋爐在實際運行中存在的問題：在額定負荷下，爐膛出口超溫、低溫段過熱器前煙溫高達936 ，遠遠超過815的設計值；噴燃器四周水冷壁結焦嚴重，過熱器管壁溫度超標，無法帶上額定負荷；甚至有時因燃煤質量的變化，必須投油助燃的嚴重情況進行了分析研究。在實際生產過程中，燃燒器的結構、布置，水冷壁的粘污、結垢，過剩空氣系數、一次風溫、煤種及其濃度變化等許多因素都會偏離鍋爐的設計工況，從而影響爐內的傳熱和燃燒，造成爐膛出口超溫、水冷壁結渣等問題。Using the opened thermosiphon of 38x3 as experimental element and water as working fluid, the characteristics of dynamic low load boiling, stable severe boiling heat transfer coefficient and critical heat flux are gotten for the opened thermosiphon at the pressure of 0. 02 - 0. 1mpa and 0. 1 - 0. 8mpa respectively, which makes up the drawback that the opened thermisiphon has not yet accurate boiling heat transfer relationship formulas. by means of experimental results, an opened thermisiphon waste heat recovery boiler is designed for the high temperature gases that the positi e electrode copper refining furnace exhaust, which overcomes effectively the drawback of short life, little capacity and unable to inspect that the closed steel - water thermosion has
本文以工程上常用的38 3的開口封底為實驗元件，以水為工質，對開啟式熱管內的動態低負荷沸騰、穩態旺盛沸騰及臨界沸騰特性進行系統的可視化實驗研究，實驗壓力為0 . 02 0 . 8mpa ，實驗得出了38 3的開口封底管在工作壓力為0 . 02 0 . 8mpa和0 . 1 0 . 8mpa下的管內沸騰傳熱系數及臨界熱負荷計算關聯式，彌補了開口封底管? ?這一新型傳熱元件尚無準確的沸騰換熱關聯式的缺陷。According to the thermodynamics analysis of spontaneous mineral of iron, we assumed : when sewage disposal, if sulphur is eliminated prior, this makes the consistency of iron ' s ion keep high relatively, it will react with phosphorus, produce heterosite, vivianite precipitate. this will decrease the interior load of the phosphorus in sediment, and reduce the consistency of the phosphorus in the dianchi lake
根據鐵的自生礦物的熱力學分析，提出設想：如果在污水處理時，優先脫硫，就使鐵離子的濃度保持較高，與磷生成磷鐵礦、藍鐵礦沉澱，就可以減輕沉積物中磷的內源負荷，進而降低滇池湖水中的磷的濃度。The air conditioning or heating water systems with primary water system in heat source or cold source side and secondary water system in load side divided by direct connection mode need to adopt connectors or water mixers
摘要用直接連接方式劃分熱源（或冷源）側一次水和負荷側二次水的供暖或空調水系統，需要採用連通器或混水器。Based on the analysis of pool water evaporation heat transfer and the sensible heat transfer between indoor air and pool water, deduces the calculation formula of latent load by pool water evaporation
摘要通過對游泳館內池水蒸發換熱及池水與室內空氣之間的顯熱換熱分析，推導出池水蒸發潛熱負荷計算公式。The average temperature of supply water and backwater only is single function of extraventricular temperature. so only it can reflect radiator ' s emitting heat, heat net supplying heat and user ' s heat load
只有二次網供回水平均溫度是室外溫度的單值函數，即它能反映用戶熱負荷、散熱器散熱量、熱網供熱量的大小。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。This paper introduce the features of a kind of electric heating atmospheric boiler which is of high efficiency on energy transferring, non - pollution, starting and stopping quickly, wider range of load adjusting, simple body structure, etc. in addition the paper introduce the design idea briefly
電加熱鍋爐具有能量轉化效率高、零污染、起停速度快、負荷調節范圍大、本體結構簡單等特點，文章具體介紹了一種常壓熱水電鍋爐的設計。During the heat accumulator supplying to users, the electric boiler usually try to make heat by starting at low price of electric and stopping at high. in general, the system of electric boiler with heat accumulator runs according to experience to utilize the time - of - use electricity price or controlled by the signals of water level or temperature
當前運行的蓄熱式電鍋爐供熱系統中電鍋爐的啟停控制一般有兩種方式：一種是根據分時電價和用戶熱負荷由人工啟停，另一種是根據蓄熱器的水位或水溫信號由自動控制裝置啟停。In chapter 4, for the first time, in the way of virtual malfunction simulation, cooling water of diesel engine type 4135 has been simulated under the stopping water supply malfunction. and the analysis and discussion has been taken on the result of transient temperature curve of the simulation. and in the same way, internally cooling oil piston of diesel engine type 180 has been numerically simulated on the virtual thermal loading mal
得出了虛擬其斷水故障模擬的瞬態溫度曲線結果，並對其進行了分析和探討；同時也用虛擬模擬的思想對180型柴油機內油冷活塞進行了虛擬其熱負荷故障的數值模擬，得出了其在斷油情況下和超負荷運轉情況下的分析結果。This program can predict the wall temperature 、 internal wall heat tranfer coefficient 、 fluid temperature and entropy profile along the water wall. all of these provide an important foundation for designing this type of water wall structure to ensure the safety of the boiler operation. this hydrodynamic calculation program and the results can be used to analyze operation reliability and structure design of water wall system
利用所開發的程序對設計的超臨界cfb進行了計算，給出不同負荷下，水冷壁出口工質溫度分佈，水冷壁受熱面不同位置處的金屬壁溫、內壁放熱系數、流體溫度焓值分佈，以及不同管子的流動壓降等結果，為分析鍋爐工作可靠性及水冷壁系統的結構設計提供了重要依據。When the water dose was 20 % and engine speed was 2000r / min, the maximum fuel saving was 4. 1 % ; the thermal efficiency of emulsified fuels was higher than that of using pure diesel oil. nox and particulates emissions were reduced greatly by using emulsified fuels. when water dose was 20 % and engine speed was 1500 r / min, the maximum nox reduction was 43. 4 % ; the average of particulates under all loads was reduced by the extent of 46 % ~ 64 %
結果表明：燃用乳化油節油率有所提高，當n = 2000r min ，摻水率為20時最大節油率可達4 . 1 ；燃用乳化油的熱效率也高於燃用純柴油； no _ x 、顆粒排放比燃用純柴油時則有大幅度降低，當n = 1500r min摻水率為20時， no _ x排放量下降的最大值可達43 . 4 ；固體顆粒物排放量在整個負荷范圍內的平均值比燃用純柴油時低46 64 ；隨著乳化油摻水量的提高，排放效果改善越明顯；而thc和co的排放量則比燃用純柴油時有所升高。Thermal stress control system actually gather the real - time data of unit sets ， compute temperature fields ， stress fields and maximum dangerous stress by the math modal ， decide target and speedup rotation in every stage of startup process ， and justify automatically to realize auto control a serial of processes of turbine ， such as speedup ， warm - up ， connecting net ， load changing ， stop and unsteady condition etc ， and improve automatic level of the unit sets. turbine auto startup ( tas ) system can automatically evaluate steam turbine ' s startup and load changing process according to thermal stress of
熱應力控制系統實際是對機組運行參數進行實時採集與監控，通過數學模型實時地計算高、中壓缸轉子的溫度場、應力場分佈，以及最危險熱應力，以確定啟動過程各階段的目標轉數及升速率，並進行自動調整，實現機組沖轉、升速、暖機、並網、升負荷、停機以及異常工況下的自動控制，大大提高了機組的自動化水平。And it is calculated and analyzed the distribution and quantity of slag thermal stress created by boiler load shift. thermal stress quantity can be as big as e / 1000 and is enough to destroy slag structure and to make some drop. it is also concluded that the walltube parameters can only affect on thermal stress of the slag that is near to contact surface and contribute little to slag drop
針對鍋爐變負荷運行時爐膛的自然掉渣現象，分析鍋爐水冷壁渣層中熱應力的產生機理，建立了水冷壁渣層熱應力的計算模型，計算分析了鍋爐大范圍變負荷運行產生的渣層熱應力變化大小和分佈，並分析渣層熱應力的影響因素。Four different schemes have been tested on the basis of load variation features concerning the hot water, obtaining optimal design parameters and operation mode
根據熱水負荷變化的特點，進行了4種方案的試驗，獲得了最佳的設計參數及運行方式。For the first time, it puts forward a conception of. thermal dynamic simulation and sets up a supposed analytical theory for scuffing failure and cylinder scoring of piston assembly and cylinder liner. that is followed with the simulation of scuffing failure and cylinder scoring of internal combustion engine under the condition of stopping cooling water supply and over loading
首次提出了熱動態模擬的概念，第一次大膽假設了活塞組、缸套擦傷、拉缸時的分析理論，模擬出了在中斷冷卻水和超負荷狀態下柴油機的擦傷、拉缸。There are many plants that have the character of time - varying, large delay, large inertia in the process of production of modern power station such as the superheated steam temperature, the reheated steam temperature, the water treatment of boiler and the load regulation. some of them have the strong character of nonlinear and some of them are multivariable coupling systems it is very difficult to obtain good effect of control by conventional pid control. it is necessary to set up the mathematics models of controlled plants if applying control means of modern control theory such as self - adaptive control, optimal control ， decoupling control and predictive control. and these control systems have large calculation and bad character of real time in general. these disadvantages make them be not able to meet the need of real production process and limit the application of them in modern power station. now the generator units are developing towards large capacity and high parameters. many new kinds of generating electricity means are coming into being. the characers of production units of power station become more and more complex but the demand to quality of control becomes more and more strict. the new control means are in bad need to control them effectively
現代電站的生產過程中存在過熱汽溫、再熱汽溫、鍋爐水處理、負荷調節等許多大遲延、大滯后、特性時變的對象，它們中有些還是具有強非線性特性的對象或多變量耦合系統，採用常規的pid控制手段很難取得良好的控制效果。若應用現代控制理論中的自適應控制、最優控制、解耦控制、預測控制等控制手段，則需要建立被控對象的數學模型，而且往往控制系統的計算量大、實時性差。這些缺點使其很難滿足實際生產過程的需要從而極大地限制了其在現代電站中的應用。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。And the conclusion is that downing load can distory the small slag and outer part of thick slag, which is helpful to keep walltube clean and useless for preventing from furnace accident caused by slag
鍋爐降負荷運行有一定程度清潔爐膛水冷壁作用，能增強爐內傳熱，卻無法防止爐膛內結渣惡化發生嚴重事故。At night, when the heat load is much lower, the chiller operation will be switched to the night mode. the by - pass valve linking the two groups of chillers will be opened so that one group of chiller can provide sufficient chilled water and thus cool air for the whole building
在夜間，熱力負荷大大降低，製冷機改以夜間模式運作，兩組製冷機之間的分流活門會打開，使用一組製冷機已可提供足夠的冷水和冷氣給整座大廈。分享友人