結垢系數 的英文怎麼說
中文拼音 [jiēgòuxìshǔ]
結垢系數
英文
scale coefficient-
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。Enhanced heat transfer tube with spiral - surface has simple frame, cheap cost, and wide - ranging purpose. only few dirt can adhere to it and is easy to be washed. it has distinct strengthen effect, and can improve chief heat transfer coefficient at 35 - 40 % comparing with smooth tube exchanger which has same volume and pump power consumption
螺旋型表面強化管結構簡單，成本低廉，用途廣泛，結垢少且易清洗，其強化效果明顯，與體積、消耗泵功率相同的光管式換熱器相比，螺旋槽管換熱器可以將總傳熱系數提高35 40 ，因而備受人們青睞。Experimental results show that : under the same conditions, the heat transfer coefficient of inert particle fluidized bed evaporator is about 1. 7 times that of the vapor - liquid flow heat transfer. the evaporator has the abilities of preventing and cleaning fouling. at the same time, it can reduce wall temperature
實驗研究結果表明，在相同操作條件下，惰性粒子流化床蒸發器傳熱管壁溫明顯低於兩相流蒸發器，其傳熱系數為兩相流蒸發器的傳熱系數的1 . 7倍左右，操作過程中惰性粒子具有良好的防、除垢效果。A model was put forward and the theoretic value that calculated with it accorded with the experimental value well. at the same time, we also studied the pressure drop of the bed and the status of preventing and cleaning fouls. the results show that the heat transfer coefficient of vapor - liquid - solid three - phase circulating fluidized bed evaporator is 1. 5 times of the vapor - liquid two - phase evaporator ' s
實驗結果表明，汽-液-固三相循環流化床蒸發器具有良好的傳熱性能，其傳熱系數是汽液兩相流蒸發器傳熱系數的1 . 5倍左右；惰性固體粒子具有良好的防、除垢效果，解決了設備的在線清洗問題。Promote condition to prevent parching, prolong continuous working time more than one time. larger applicant scope, both thin and glutinous materials can be adapted. only o - type ring should be replaced when maintaining without heavy tools and dead angles. wash thoroughly, high efficient, far more than coil heat exchanger. heat transmit coefficient is close to plate system, producing cost is high and the floor space is large
改善了結垢的狀況，連續生產時間延長一倍以上，適用范圍更加寬廣，稀薄狀、粘稠狀物料均能勝任，維護時只要更換o形圈，無需笨重的工具，無死角，清洗徹底，效率高，換熱效率遠大於盤管式，傳熱系數接近板式，製造成本較高，佔地面積較大。分享友人