Heat exchange – Heating and cooling – Heating and cooling of the same material
Patent
1982-03-18
1985-04-30
Davis, Jr., Albert W.
Heat exchange
Heating and cooling
Heating and cooling of the same material
126263, 244163, 165 64, 165 48R, F24J 100
Patent
active
045138109
ABSTRACT:
A low gravity exothermic heating/cooling apparatus is disclosed for processing materials in space which includes an insulated casing (10) and a sample support (16), (18) carried within the casing which supports a sample container (14). An exothermic heat source (A) includes a plurality of segments (20) of exothermic material stacked one upon another to produce a desired temperature profile when ignited. The exothermic material segments are constructed in the form of an annular element having a recess opening (22) which defines an open central core (23) throughout the vertical axis of the stacked exothermic material (A). The sample container (14) is arranged within the core (23) of the stacked exothermic heating material. Igniters (24) are spaced vertically along the axis of the heating material to ignite the exothermic material at spaced points to provide total rapid burn and release of heat. To rapidly cool and quench the heat, a source (30) of liquid carbon dioxide is provided which is conveyed through a conduit (32) and a metering orifice (36) into a distribution manifold (34) where the carbon dioxide is gasified and dispersed around the exothermic heating material and the sample container via tubes (38) for rapidly cooling the material sample.
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Beumer Joseph H.
Davis Jr. Albert W.
Manning John R.
The United States of America as represented by the Administrator
Wofford, Jr. Leon D.
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