F28B1/00	7	Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser	F28B1/00	F28B1/00		684
F28B1/02	8	using water or other liquid as the cooling medium	F28B1/02	F28B1/02		2666
F28B1/04	9	employing moving walls	F28B1/04	F28B1/04		35
F28B1/06	8	using air or other gas as the cooling medium<br><br><u>NOTE</u><br><br>This group covers also air cooled heat exchangers for which the use as condenser is not explicitly specified, but the configuration is similar to air cooled condensers, e.g. dry cooling towers 	F28B1/06	F28B1/06		1558
F28B2001/065	9	{with secondary condenser, e.g. reflux condenser or dephlegmator}	F28B1/06	F28B1/06		100
F28B1/08	9	employing moving walls	F28B1/08	F28B1/08		22
F28B3/00	7	Condensers in which the steam or vapour comes into direct contact with the cooling medium	F28B3/00	F28B3/00		169
F28B3/02	8	by providing a flowing coating of cooling liquid on the condensing surface	F28B3/02	F28B3/02		70
F28B3/04	8	by injecting cooling liquid into the steam or vapour (F28B3/08 takes precedence)	F28B3/04	F28B3/04		297
F28B3/06	8	by injecting the steam or vapour into the cooling liquid (F28B3/08 takes precedence)	F28B3/06	F28B3/06		102
F28B3/08	8	with rotatable members	F28B3/08	F28B3/08		35
F28B5/00	7	Condensers employing a combination of the methods covered by main groups F28B1/00 and F28B3/00; Other condensers	F28B5/00	F28B5/00		315
F28B7/00	7	Combinations of two or more condensers, e.g. provision of reserve condenser	F28B7/00	F28B7/00		235
F28B9/00	7	Auxiliary systems, arrangements, or devices	F28B9/00	F28B9/00		736
F28B9/005	8	{for protection against freezing}	F28B9/00	F28B9/00		143
F28B9/02	8	for feeding steam or vapour to condensers	F28B9/02	F28B9/02		282
F28B9/04	8	for feeding, collecting, and storing cooling water or other cooling liquid	F28B9/04	F28B9/04		615
F28B9/06	9	with provision for re-cooling the cooling water or other cooling liquid	F28B9/06	F28B9/06		337
F28B9/08	8	for collecting and removing condensate	F28B9/08	F28B9/08		2281
F28B9/10	8	for extracting, cooling, and removing non-condensable gases	F28B9/10	F28B9/10		676
F28B11/00	7	Controlling arrangements with features specially adapted for condensers (control arrangements in general G05)	F28B11/00	F28B11/00		971
