Apparatus for measuring the pore size of enhanced tubes

Details Apparatus for measuring the pore size of enhanced tubes Apparatus for measuring the pore size of enhanced tubes

1985-12-02

1990-04-10

Goldberg, Howard N.

Measuring and testing

With fluid pressure

Porosity or permeability

29407, 29705, 29720, 73 40, 73 491, B21D 5302

Patent

active

049148109

ABSTRACT:
An apparatus for measuring the surface pore size in an externally enhanced evaporator tube. Basically, the apparatus includes a pressure housing and gage that are sealingly engagable around a portion of the surface of the enhanced tube, so that fluid pressure flows into the housing and then through the pores and subsurface channels on the tube and then to the outside of the housing. The pressure drop across the pores and subsurface channels of the tube relates to the size of the pores.

REFERENCES:
patent: 2703978 (1955-03-01), Baxter
patent: 3371521 (1968-03-01), Hauk
patent: 3871209 (1975-03-01), Hasha
Kirk--Othmer, encyclopedia of Chemical Technology, second completely revised edition, vol. 21, pp. 97-99, John Wiley & Sons, Inc., 1970.

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