wall-cooling surface 中文意思是什麼
wall-cooling surface
解釋
水冷壁面-
The thermal visualizations of jet impingement cooling with single or double row holes inside semi - enclosed channel are measured by using infrared camera and then the impingement cooling heat transfer coefficients are deduced. the effects of flow and geometry parameters on convective heat coefficients are obtained. the results show that : for a single row normal impingement, the impingement cooling effectiveness is enhanced with the increase of impinging reynolds number or the decrease of hole space to diameter ratio, and the best effectiveness is achieved under the jet - to - surface spacing equals to 2 ; when the jet is oblique to the confined wall, the cooling effectiveness is weaken especially under the jet - to - surface spacing ratio is greater than 2 ; for double rows normal impingement cooling, the cooling effectiveness of rear row jet is weaker than the front row under lower impinging reynolds number or bigger jet - to - surface spacing
對于單排垂直射流，沖擊冷卻效果隨射流雷諾數的增加、孔間距與直徑比的減小而得到提高，沖擊間距比為2時換熱效果最好;沖擊孔中心線向通道封閉一側傾斜后，射流沖擊冷卻的范圍變窄，當沖擊間距比大於2時駐點區的對流換熱能力明顯降低;對于雙排沖擊射流，孔排間距與直徑比的增加使沖擊冷卻范圍變大，但在兩排孔之間區域的對流換熱系數有所下降;在較小的沖擊射流雷諾數和較大的沖擊間距比下，後排射流的沖擊換熱效果要遜於前排射流。 -
Treatment for three stubborn problems in the safe and economical operation of cfbc boiler wear prevention of wall and heating surface discharge and cooling of bottom slag
爐壁和受熱面防磨的治理及爐底渣排放與冷卻 -
This paper describes the con - cept of udb, together with its advantages and disad - vantages, and demonstrates the formation damagemechanism during ubd, e. g., the lack of filter cakeprotection, temporary over - balanced condition, pol - ishing effect and surface damage caused by frictionbetween bit and hole wall and poor cooling, and otherdamages, etc
介紹了欠平衡鉆井的概念以及優點和缺點，闡述了欠平衡鉆井對地層的損害機理為由於缺少起保護作用的濾餅，臨時的超平衡造成對地層的損害；天然滲析效應；拋光、表面損害以及其它損害。 -
Proceed from energy - conserving angle of building, a kind of passive evaporative cooling way is proposed that applies to the wall surface, namely porosity moisture - conditioned material is used on building envelope
摘要從節能角度出發，提出一種應用於建築墻體表面的被動蒸發冷卻方式，即將多孔調濕材料貼附於墻體外表面，這種材料兼具自動吸放濕性能和蒸發冷卻性能。 -
After the optimizing system is put into operation, online calculating results and operation effect is analyzed, pointing out that the base for the whole boiler soot blow optimization is the minimum loss of soot accumulation and energy consumption of soot blowing, the base for water cooling wall soot blow optimization is the combustion house outlet gas temperature difference, the base for a single heat exchange surface soot blow optimization is the degree of its soot accumulation
並對優化系統在線運行后，取得的實時計算結果和實際效果進行了分析，著重指出積灰和吹灰的經濟性最佳可作為整個鍋爐吹灰優化的決策依據，爐膛出口煙溫差可以作為爐膛吹灰優化決策的依據，受熱麵灰污程度可以作為單個對流受熱面吹灰優化決策的依據。
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