by affecting the pattern of flow of the heat-exchange media

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Arrangements for modifying heat-transfer, e.g. increasing, decreasing (F28F1/00 - F28F11/00 take precedence) > by affecting the pattern of flow of the heat-exchange media

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• F28F 13/08 by varying the cross-section of the flow channels
• F28F 13/10 by imparting a pulsating motion to the flow, e.g. by sonic vibration
• F28F 13/12 by creating turbulence, e.g. by stirring, by increasing the force of circulation (F28F13/08 takes precedence)