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

1986-02-25

1987-09-15

Noland, Tom

Measuring and testing

Sampler, sample handling, etc.

With heating or cooling

62514R, 62373, 62 64, G01N 128

Patent

active

046931244

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 pore volume and surface area analyzer.

REFERENCES:
patent: 3357256 (1967-12-01), Burch
patent: 3555912 (1971-01-01), Lowell
patent: 3850040 (1974-11-01), Orr, Jr. et al.
patent: 4269608 (1981-05-01), Sisti et al.
Hare, James D., Performance of a Nitrogen Heat Pipe with Various Capillary Structures, Jun. 1975, pp. 1-9, 37-38, 61, 69, 80-82.
Adt, Jr., R. R., Irreversible Thermodynamic Analysis of the Axially Heated Heat Pipe, 1970, pp. 326-327, 335; 6th, S.E. Seminaron Thermol Science Proceedings.
Edwards, D. K., Denny, V. E., and Mills, A. F., Transfer Processes, An Introduction to Diffusion Convection and Radiation, 1973, pp. 68-73.

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