DIFF Subgroup
F22D 1/28 for direct heat transfer, e.g. by mixing water and steam
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Feed-water heaters, e.g. preheaters > for direct heat transfer, e.g. by mixing water and steam
CPC:
Feed-water heaters, i.e. economisers or like preheaters > for direct heat transfer, e.g. by mixing water and steam
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
Child Classifications
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- F22D 1/30 with stages, steps, baffles, dishes, circular troughs, or other means to cause interrupted or cascading fall of water IPC+CPC Available in IPC and CPC