Suppression of natural convection heat transfer coefficients in an attic shaped enclosure

✍ Scribed by T.N. Anderson; M. Duke; J.K. Carson

• Publisher: Elsevier Science
• Year: 2010
• Tongue: English
• Weight: 398 KB
• Volume: 37
• Category: Article
• ISSN: 0735-1933
• DOI: 10.1016/j.icheatmasstransfer.2010.06.009

✦ Synopsis

The use of convection suppression devices has been widely discussed in the literature as a means of reducing natural convection heat loss from enclosed spaces. In this study the use of a single baffle was examined as a possible low cost means of suppressing heat loss by natural convection in an attic shaped enclosure. Recently the authors experimentally demonstrated that the natural convection heat transfer for an attic shaped enclosure with Grashof Numbers in the range of 10 7 to 10 9 [1] could be predicted using a correlation in the literature developed for Grashof Numbers in the range 10 5 and 10 6 [2]. However, in this study the impact of adding a single baffle to the enclosure was examined. It was found that the heat transfer coefficient changes with increasing baffle length, and can be predicted using a modified form of the correlation presented in [1], as shown in Eq. ( 1).