文献类型：期刊文献

英文题名：Judgement and calculation method research of onset of nucleate boiling under tube outside pool boiling condition

作者：Liu, Yanbin[1]; Meng, Xiangyu[1]; Wang, Xuesheng[1]; Yuan, Yuyang[1]

机构：[1] School of Mechanical and Power Engineering, East China University of Science and Technology, Building 17, 130 Meilong Road, Shanghai, 200237, China

年份：2021

卷号：680

期号：1

外文期刊名：IOP Conference Series: Earth and Environmental Science

收录：EI(收录号：20211210109754)

语种：英文

外文关键词：Heat exchangers - Heat transfer - Pressurized water reactors - Nucleate boiling - High speed cameras - Nuclear power plants

摘要：Pool boiling is a common phenomenon and widely utilized to realize the heat transfer process in different fields. In advanced nuclear power plant such as the AP1000 passive safety system, pool boiling is also used to fulfil the residual heat removal function through the Passive Residual Heat Removal Heat Exchanger (PRHR HX). The onset of nucleate boiling (ONB) point is one of the key points during heat transfer mechanism changing process. The judgement and predicted method of the ONB under tube outside pool boiling condition is still a difficulty and needs further investigation. In this paper, the heat transfer characteristic of the ONB point is experimentally studied by combining with high speed camera technology. Base on the observing and calculating results, the ONB point is judged. The applicabilities of different ONB point predicting correlations are estimated and an empirical correlation predicting wall superheat degree more accurately is developed. ? Published under licence by IOP Publishing Ltd.