THEORETICAL STUDY AND REVIEW ON THE OPERATIONAL LIMITATIONS DUE TO VAPOUR FLOW IN HEAT PIPES

Frontiers in Heat Pipes (FHP)

Bertin, Yves¹  Ayel, Vincent¹  Bertossi, Rémi¹  Romestant, Cyril¹ 

关键词: Pharmacists';    Aides;    Pharmacists;    Workflow;    Community Pharmacy Services;    Drug Utilization Review;    Professional Practice;    United Kingdom;   

DOI  :  10.5098/fhp.v3.2.3001

学科分类：地球科学(综合)

来源: Global Digital Central

【 摘 要 】

Vapour flow in heat pipes is subject to two operating limitations that can restrict the performances of such technologies. The first one is the viscous limitation: it occurs when the operating temperature is closed to the triple point and the pressure slope on the saturation curve, related to the temperature glide, is not large enough to counterbalance the viscous pressure losses of the vapour flow. The second one is the sonic limitation: it can appear when the vapour velocity becomes high so that it reaches the speed of sound. This paper presents a detailed description of the physical phenomena which take place in these two types of limitations. Some analytical expressions of maximal heat flux induced by the latter are also proposed.

【 授权许可】

Unknown