heatandmasstransferofammoniawaterinfallingfilmevaporator

GIEC OpenIR

	heatandmasstransferofammoniawaterinfallingfilmevaporator
	Bu Xianbiao; Ma Weibin; Li Huashan
	2011
Source Publication	frontiersinenergy
ISSN	2095-1701
Volume	5 Issue:4 Pages:358
Abstract	To investigate the performance of heat and mass transfer of ammonia-water during the process of falling film evaporation in vertical tube evaporator, a mathematical model of evaporation process was presented, the solution of which that needed a coordinate transformation was based on stream function. The computational results from the mathematical model were validated with experimental data. Subsequently, a series of parameters, such as velocity, film thickness and concentration, etc., were obtained from the mathematical model. Calculated results show that the average velocity and the film thickness change dramatically at the entrance region when x < 100 mm, while they vary slightly with the tube length in the fully developed region when x > 100 mm. The average concentration of the solution reduces along the tube length because of evaporation, but the reducing tendency becomes slow. It can be concluded that there is an optimal relationship between the tube length and the electricity generated. The reason for the bigger concentration gradient in the y direction is that the smooth tube is chosen in the calculation. It is suggested that the roll-worked enhanced tube or other enhanced tube can reduce the concentration gradient in the film thickness direction and enhance the heat and mass transfer rate.
Language	英语
Document Type	期刊论文
Identifier	http://ir.giec.ac.cn/handle/344007/22235
Collection	中国科学院广州能源研究所
Affiliation	中国科学院广州能源研究所
First Author Affilication	GuangZhou Institute of Energy Conversion,Chinese Academy of Sciences
Recommended Citation GB/T 7714	Bu Xianbiao,Ma Weibin,Li Huashan. heatandmasstransferofammoniawaterinfallingfilmevaporator[J]. frontiersinenergy,2011,5(4):358.
APA	Bu Xianbiao,Ma Weibin,&Li Huashan.(2011).heatandmasstransferofammoniawaterinfallingfilmevaporator.frontiersinenergy,5(4),358.
MLA	Bu Xianbiao,et al."heatandmasstransferofammoniawaterinfallingfilmevaporator".frontiersinenergy 5.4(2011):358.

Files in This Item:
There are no files associated with this item.

If you have any objections to this item, please fill out the form below and the administrator will contact you as soon as possible.
Content:
Email：	*
Institution:
Verification Code:	Refresh

Any comments and suggestions are welcomed.
Title:	*
Content:
Email：	*
Verification Code:	Refresh

中国科学院广州能源研究所机构知识库