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F
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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F28
HEAT EXCHANGE IN GENERAL
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F28F
DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
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13/00
Arrangements for modifying heat-transfer, e.g. increasing, decreasing
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F28F13/06
by affecting the pattern of flow of the heat-exchange media
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F28F13/10
by imparting a pulsating motion to the flow, e.g. by sonic vibration
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