Experiments were carried out in the laboratory to test a theory of transient flow of pure steam in a uniform porous medium. It was found in experiments run at 100o, 125o, and 146oC that the time required for steam pressure transients to propagate through an unconsolidated material containing sand, silt, and clay was 10-25 times longer than predicted by conventional superheated steam flow theory. -from Authors
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Laboratory investigations of steam flow in a porous medium.