ISSN:
1572-9567
Keywords:
critical phenomena
;
parallel-plate method
;
thermal conductivity
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract A description is presented of the construction and operating procedure of an improved guarded parallel-plate instrument for measuring the thermal conductivity of fluids in the critical region. With the improved arrangement, it has been possible to reduce the temperature differences across the fluid layer between the two horizontal plates to values as low as 0.3 mK, thus allowing the thermal conductivity of fluids to be measured at temperatures as close as 20 mK to the critical temperature. The instrument has been used to measure the thermal conductivity of methane and of a mixture of methane and ethane in the close vicinity of the critical point.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1021476702452
Permalink