We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Numerical simulation and analysis of enhanced heat transfer tube for heat recovery of vehicle exhaust.
- Authors
XU Chenglong; LIU Weijun; HU Weiping
- Abstract
A numerical simulation is carried out for the analysis of Double--Inclined Streamline Ribs tube (DISR tube) which is used in vehicle exhaust heat recovery. The influence on the heat exchange performance by structural parameter is analyzed. The results shows that the DISR tube structural parameter exists the optimal value of rib length(l=38 mm), rib inclined degree (α = 45°), rib height(h = 2.5 mm) and rib pitch(P=60 mm). Comparing a DISR tube with a plain tube in the same condition and range of Reynolds numbers(Re=1.2x104~5 x 104), the Nusselt number is enhanced up to 54.5% ~90.7%, and the friction factor increases to 157.6%~204.2%. Meanwhile, when the field synergy angle was reduced from 90° to 80°, the heat transfer effect is enhanced significantly. The paper presents that the field synergy angle decline greatly near every ribs, which is the main reason for the heat transfer enhancement.
- Subjects
HEAT transfer instruments; HEAT recovery equipment; AUTOMOBILE exhaust systems
- Publication
Journal of Hebei University of Science & Technology, 2013, Vol 34, Issue 6, p589
- ISSN
1008-1542
- Publication type
Product Review
- DOI
10.7535/hbkd.2013yx06016