CIESC Journal ›› 2022, Vol. 73 ›› Issue (2): 595-603.DOI: 10.11949/0438-1157.20211180
• Fluid dynamics and transport phenomena • Previous Articles Next Articles
Yu GU(),Luyuan GONG,Yali GUO(),Shengqiang SHEN
Received:
2021-08-16
Revised:
2021-11-19
Online:
2022-02-18
Published:
2022-02-05
Contact:
Yali GUO
通讯作者:
郭亚丽
作者简介:
谷雨(1985—),男,博士研究生,基金资助:
CLC Number:
Yu GU, Luyuan GONG, Yali GUO, Shengqiang SHEN. Experimental study on condensation heat transfer characteristics of low mass flow rate steam in a vacuum horizontal tube[J]. CIESC Journal, 2022, 73(2): 595-603.
谷雨, 龚路远, 郭亚丽, 沈胜强. 低质量流率蒸汽真空水平管内凝结传热特性的实验研究[J]. 化工学报, 2022, 73(2): 595-603.
参数 | 不确定度 |
---|---|
实验管内径D | ±0.05 mm |
实验管有效换热长度L | ±2 mm |
蒸汽入口饱和温度Tsat | ±0.046℃ |
冷却水总传热温差ΔTs,c | ±0.14℃ |
冷却水流量mc | ±1.3% |
管内凝结段传热量Q | ±14.1% |
传热系数h | ±15.7% |
蒸汽质量流率G | ±2.5% |
质量含气率x | ±14.1% |
Table 1 The direct and indirect uncertainty of the experiment
参数 | 不确定度 |
---|---|
实验管内径D | ±0.05 mm |
实验管有效换热长度L | ±2 mm |
蒸汽入口饱和温度Tsat | ±0.046℃ |
冷却水总传热温差ΔTs,c | ±0.14℃ |
冷却水流量mc | ±1.3% |
管内凝结段传热量Q | ±14.1% |
传热系数h | ±15.7% |
蒸汽质量流率G | ±2.5% |
质量含气率x | ±14.1% |
Fig.10 Comparison between the predicted value and the experimental value of the local heat transfer coefficient in the condensation heat transfer zone at the top of the tube
Fig.11 Comparison between the predicted value and the experimental value of the local heat transfer coefficient in the condensation convective heat transfer zone at the bottom of the tube
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