40. Heat transfer between solids and liquid helium II
โ Scribed by L.J. Challis; J. Wilks
- Publisher
- Elsevier Science
- Year
- 1958
- Weight
- 66 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0031-8914
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โฆ Synopsis
Points where these losses can occur are mentioned. A brief description of transport vessels and their defects is given.
The economic aspects of helium distribution are divided into running and capital costs. It is shown that gas costs form the major part of running costs, but that depreciation and interest charges, if made, can easily equal the running costs. Thus, the charge to users of the scheme depends largely on the method of accounting employed, and to a lesser extent on the amount of gas returned and re-used.
An attempt is made to determine the point at which a user would find it more economic to buy or build his own hquefier.
Heat transfer between solids and liquid helium II.
๐ SIMILAR VOLUMES
Results of calculations of Kapitza resistance and phonon reflectivity are presented for clean and dirty solid surfaces in contact with liquid helium. We suppose the existence of a thin attenuating layer of absorbed solid helium at the interface. It is shown that even 5-15A thick layers of contaminat