DSpace@nitr >
National Institue of Technology- Rourkela >
Journal Articles >

Please use this identifier to cite or link to this item: http://hdl.handle.net/2080/175

Title: Effects of axial conduction in the fluid on cryogenic regenerator performance
Authors: Sarangi, S K
Baral, H S
Keywords: cryogenerators
regenerators
axial conduction
Issue Date: 1987
Publisher: Elsevier
Citation: Cryogenics, Vol 27, Iss 9, P 505-509
Abstract: Although axial conduction in the matrix has been recognized as a major source of irreversibility in cryogenic regenerators, axial conduction in the fluid phase has largely been neglected. However, in spite of the negligible intrinsic thermal conductivity of most gases the effective conductivity of the gaseous medium in a porous bed may be quite significant, due to eddy diffusion and the consequent mixing of sections of gas at different temperatures. The governing equations of a thermal regenerator have been written in terms of the reduced length, A, reduced period, II, and an axial conduction parameter, λ, which depends only on the void fraction and the bed length to particle diameter ratio for a flow Reynolds number Re > 2. Numerical solutions, using the finite difference technique developed by Willmott and co-workers, have been obtained for several values of the three parameters. It has been established that axial conduction in the fluid phase is important, particularly when the desi...
Description: Copyright for this article belongs to Elsevier Science Ltd http://dx.doi.org/10.1016/0011-2275(87)90113-5
URI: http://hdl.handle.net/2080/175
Appears in Collections:Journal Articles

Files in This Item:

File Description SizeFormat
sks5.pdf536KbAdobe PDFView/Open

Show full item record

All items in DSpace are protected by copyright, with all rights reserved.

 

Powered by DSpace Feedback