广州化工
廣州化工
엄주화공
GUANGZHOU CHEMICAL INDUSTRY AND TECHNOLOGY
2015年
2期
116-118
,共3页
内螺纹铜管%水-水换热%传热系数
內螺紋銅管%水-水換熱%傳熱繫數
내라문동관%수-수환열%전열계수
internal tread tube%water-water heat transfer system%heat transfer coefficient
搭建了铜管单管性能测试试验台，测试不同内表面形式铜管在水-水系统的换热和压损。测试表明，在水流速0.8~1.65 m/s范围内，内螺纹管的换热量较光管高7%~17%，总传热系数K较光管高9%~23%，管内换热系数α较光管高30%~60%，压损增加20%~30%；两种内螺纹管参数比较，齿顶角大、螺旋角大、齿数稍多的管型换热量大6%左右，总传热系数大7%~10%，管内换热系数α高20%~30%，压损大近10%。此项研究可以广泛应用于石油化工、环境调节等领域。
搭建瞭銅管單管性能測試試驗檯，測試不同內錶麵形式銅管在水-水繫統的換熱和壓損。測試錶明，在水流速0.8~1.65 m/s範圍內，內螺紋管的換熱量較光管高7%~17%，總傳熱繫數K較光管高9%~23%，管內換熱繫數α較光管高30%~60%，壓損增加20%~30%；兩種內螺紋管參數比較，齒頂角大、螺鏇角大、齒數稍多的管型換熱量大6%左右，總傳熱繫數大7%~10%，管內換熱繫數α高20%~30%，壓損大近10%。此項研究可以廣汎應用于石油化工、環境調節等領域。
탑건료동관단관성능측시시험태，측시불동내표면형식동관재수-수계통적환열화압손。측시표명，재수류속0.8~1.65 m/s범위내，내라문관적환열량교광관고7%~17%，총전열계수K교광관고9%~23%，관내환열계수α교광관고30%~60%，압손증가20%~30%；량충내라문관삼수비교，치정각대、라선각대、치수초다적관형환열량대6%좌우，총전열계수대7%~10%，관내환열계수α고20%~30%，압손대근10%。차항연구가이엄범응용우석유화공、배경조절등영역。
The single-tube experimental system of heat transfer performance was established, and the heat transfer ability and pressure drop at the water-water system of single-tube with different inner surface were tested. It was consulted that within the velocity of 0. 8 ~1. 65 m/s, the capacity of heat transfer in the thread tube was 7% ~17%higher than that of plain tube, the heat transfer coefficient K increased 9% ~23% than that of plain tube, the inner heat transfer coefficient αincreased 30% ~60% than that of plain tube, and the pressure drop increased 20% ~30% than that of plain tube. The capacity of heat transfer of the internal thread with bigger top angle, spiral angle and more rack number increased 6%, the heat transfer coefficient increased 7% ~10%, the inner heat transfer coefficient αincreased 20% ~30%, and the pressure drop increased 10%. A widely use in petroleum chemical industry, environmental regulation and other fields was put forward by this study.
