Temperature controlling apparatus for use with pore volume and s

Details Temperature controlling apparatus for use with pore volume and s Temperature controlling apparatus for use with pore volume and s

1988-10-21

1991-04-09

Noland, Tom

Measuring and testing

Sampler, sample handling, etc.

With heating or cooling

62 511, 62 64, 62373, G01N 128, B01L 700, F25D 310

Patent

active

RE0335673

ABSTRACT:
An apparatus for maintaining a constant temperature within a vessel immersed in a liquid by surrounding a portion of the vessel, extending above the surface of the liquid, with a wick. The wick conducts liquid up to a predetermined point on the vessel and maintains the liquid at that point, regardless of changes in the level of the liquid due to evaporation. The wick is encased within a layer of heat insulating or heat conducting material to further aid in maintaining a constant temperature within the vessel. A second embodiment, including alternating layers of heat conducting and heat insulating material, is disclosed for increased temperature control. The disclosed apparatus is particularly useful for maintaining a constant temperature within a vessel attached to a scientific instrument, such as a port volume and surface area analyzer.

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"Performance of a Nitrogen Heat Pipe with Various Capillary Structures"; Masters Thesis of James D. Hare, Georgia Institute of Technology, Jun. 1975; pp. 1-9, 37-38, 61, 69, 280-282.
"Irreversible Thermodynamic Analysis of the Axially Heated Pipe"; 6th S.E. Seminar on Thermal Science Proceedings; 1970; pp. 326-327 & 335; R. R. Adt, Jr.
Transfer Processes, An Introduction to Diffusion Convection & Radiation; pp. 68-73; 1973; D. K. Edwards et al.

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