Heat Transfer through Penguin Feathers
โ Scribed by Colin Dawson; Julian F.V Vincent; George Jeronimidis; Graham Rice; Paula Forshaw
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 142 KB
- Volume
- 199
- Category
- Article
- ISSN
- 0022-5193
No coin nor oath required. For personal study only.
โฆ Synopsis
Morphological measurements of penguin feathers are used to construct a thermal model of heat transfer through the coat. Assuming uniform distribution of the feathers and their associated afterfeathers, it is possible to model heat transfer through the coat of the penguin using standard theory. It is shown that convection does not occur in the coat of the penguin and that radiative heat loss is minimized. The theory predicts a thermal conductivity of 2.38 W m\ K\ which compares well with an empirically measured value of 1.93 W m\ K.
๐ SIMILAR VOLUMES
## HEAT TRANSFER THROUGH BOILING LIQUID FILMS By F. RUMFORD The rate of heat flow from a metal wall to a boiling fluid has been measured for water, roluenc, ethyl alcohol and nirric acid. It has been shown that, where more than about 10% of the feed liquid is converted to vapour, the rate of heat
Enhanced heat transfer surfaces have been successfully used in the heat transfer industry to obtain more compact and e$cient units. Conservation of the useful part of energy (exergy) can be reached through higher heat transfer than that for standard surfaces and #ow con"gurations. There are numerous
Recently a wide range of materials have become available in the form of fibres or fabrics for use in electrochemical reactors and other applications. The problem of heat transfer through fabric materials is theoretically solved-a model representing the plain weave fabrics is given, which facilitates