F24D1/00	7	Steam central heating systems (district heating systems F24D10/00; central heating systems using heat accumulated in storage masses F24D11/00)	F24D1/00	F24D1/00		882
F24D1/005	8	{in combination with systems for domestic water supply}	F24D1/00	F24D1/00		119
F24D1/02	8	operating with live steam {(F24D1/005 takes precedence)}	F24D1/02	F24D1/02		217
F24D1/04	8	operating with exhaust steam {(F24D1/005 takes precedence)}	F24D1/04	F24D1/04		85
F24D1/06	8	operating with superheated steam {(F24D1/005 takes precedence)}	F24D1/06	F24D1/06		42
F24D1/08	8	Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks	F24D1/08	F24D1/08		223
F24D3/00	7	Hot-water central heating systems (district heating systems F24D10/00; central heating systems using heat accumulated in storage masses F24D11/00)	F24D3/00	F24D3/00		988
F24D3/005	8	{combined with solar energy (solar heat collectors per seF24S)}	F24D3/00	F24D3/00		688
F24D3/02	8	with forced circulation, e.g. by pumps	F24D3/02	F24D3/02		2761
F24D3/04	8	with the water under high pressure	F24D3/04	F24D3/04		237
F24D3/06	9	Arrangements or devices for maintaining high pressure	F24D3/06	F24D3/06		101
F24D3/08	8	in combination with systems for domestic hot-water supply	F24D3/08	F24D3/08		2371
F24D3/082	9	{Hot water storage tanks specially adapted therefor}	F24D3/08	F24D3/08		795
F24D3/085	10	{Double-walled tanks}	F24D3/08	F24D3/08		182
F24D3/087	9	{Tap water heat exchangers specially adapted therefore}	F24D3/08	F24D3/08		424
F24D3/10	8	Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks {; Hydraulic components of a central heating system}	F24D3/10	F24D3/10		2001
F24D3/1008	9	{expansion tanks}	F24D3/10	F24D3/10		960
F24D3/1016	10	{Tanks having a bladder}	F24D3/10	F24D3/10		443
F24D3/1025	10	{Compressor controlled pressure heads}	F24D3/10	F24D3/10		14
F24D3/1033	10	{with compressed gas cylinder}	F24D3/10	F24D3/10		14
F24D3/1041	10	{Flow-through}	F24D3/10	F24D3/10		94
F24D3/105	9	{pumps combined with multiple way valves}	F24D3/10	F24D3/10		193
F24D3/1058	9	{disposition of pipes and pipe connections}	F24D3/10	F24D3/10		1439
F24D3/1066	10	{Distributors for heating liquids}	F24D3/10	F24D3/10		1372
F24D3/1075	11	{Built up from modules}	F24D3/10	F24D3/10		341
F24D3/1083	9	{Filling valves or arrangements for filling}	F24D3/10	F24D3/10		539
F24D3/1091	9	{Mixing cylinders}	F24D3/10	F24D3/10		223
F24D3/12	8	Tube and panel arrangements for ceiling, wall, or underfloor heating (electric underfloor heating F24D13/02)	F24D3/12	F24D3/12		1068
F24D3/122	9	{Details}	F24D3/12	F24D3/12		364
F24D3/125	10	{Hydraulic pipe connections}	F24D3/12	F24D3/12		339
F24D3/127	10	{Mechanical connections between panels}	F24D3/12	F24D3/12		555
F24D3/14	9	incorporated in a ceiling, wall or floor	F24D3/14	F24D3/14		1981
F24D3/141	10	{Tube mountings specially adapted therefor}	F24D3/14	F24D3/14		1124
F24D3/142	11	{integrated in prefab construction elements}	F24D3/14	F24D3/14		1707
F24D3/143	11	{Tube clips with barbed anchors}	F24D3/14	F24D3/14		213
F24D3/144	11	{Clips for fastening heating tubes on a reinforcement net or mesh, e.g. mesh for concrete reinforcement}	F24D3/14	F24D3/14		163
F24D3/145	10	{Convecting elements concealed in wall or floor}	F24D3/14	F24D3/14		240
F24D3/146	10	{Tubes specially adapted for underfloor heating}	F24D3/14	F24D3/14		371
F24D3/147	10	{arranged in facades}	F24D3/14	F24D3/14		192
F24D3/148	10	{with heat spreading plates}	F24D3/14	F24D3/14		517
F24D3/149	10	{Tube-laying devices}	F24D3/14	F24D3/14		728
F24D3/16	9	mounted on, or adjacent to, a ceiling, wall or floor	F24D3/16	F24D3/16		952
F24D3/165	10	{Suspended radiant heating ceiling}	F24D3/16	F24D3/16		732
F24D3/18	8	using heat pumps	F24D3/18	F24D3/18		2897
F24D5/00	7	Hot-air central heating systems (district heating systems F24D10/00; central heating systems using heat accumulated in storage masses F24D11/00; air conditioning F24F); Exhaust gas central heating systems	F24D5/00	F24D5/00		1194
F24D5/005	8	{combined with solar energy}	F24D5/00	F24D5/00		238
F24D5/02	8	operating with discharge of hot air into the space or area to be heated	F24D5/02	F24D5/02		767
F24D5/04	9	with return of the air or the air-heater	F24D5/04	F24D5/04		540
F24D5/06	8	operating without discharge of hot air into the space or area to be heated	F24D5/06	F24D5/06		75
F24D5/08	9	with hot air led through radiators	F24D5/08	F24D5/08		346
F24D5/10	9	with hot air led through heat-exchange ducts in the walls, floor or ceiling	F24D5/10	F24D5/10		728
F24D5/12	8	using heat pumps	F24D5/12	F24D5/12		356
F24D7/00	7	Central heating systems employing heat-transfer fluids not covered by groups F24D1/00 - F24D5/00, e.g. oil, salt or gas (district heating systems F24D10/00; central heating systems using heat accumulated in storage masses F24D11/00)	F24D7/00	F24D7/00		263
F24D9/00	7	Central heating systems employing combinations of heat transfer fluids covered by two or more of groups F24D1/00&#160;-&#160;F24D7/00(district heating systems F24D10/00; central heating systems using heat accumulated in storage masses F24D11/00)	F24D9/00	F24D9/00		146
F24D9/02	8	Hot water and steam systems	F24D9/02	F24D9/02		147
F24D10/00	7	District heating systems	F24D10/00	F24D10/00		785
F24D10/003	8	{Domestic delivery stations having a heat exchanger}	F24D10/00	F24D10/00		513
F24D10/006	8	{Direct domestic delivery stations}	F24D10/00	F24D10/00		210
F24D11/00	7	Central heating systems using heat accumulated in storage masses (self-contained storage heating units F24D15/02)	F24D11/00	F24D11/00		565
F24D11/001	8	{district heating system}	F24D11/00	F24D11/00		213
F24D11/002	8	{water heating system}	F24D11/00	F24D11/00		1123
F24D11/003	9	{combined with solar energy}	F24D11/00	F24D11/00		1399
F24D11/004	9	{with conventional supplementary heat source}	F24D11/00	F24D11/00		527
F24D11/005	9	{with recuperation of waste heat}	F24D11/00	F24D11/00		429
F24D11/006	8	{air heating system}	F24D11/00	F24D11/00		159
F24D11/007	9	{combined with solar energy}	F24D11/00	F24D11/00		335
F24D11/008	9	{with conventional supplementary heat source}	F24D11/00	F24D11/00		46
F24D11/009	9	{with recuperation of waste heat}	F24D11/00	F24D11/00		80
F24D11/02	8	using heat pumps	F24D11/02	F24D11/02		457
F24D11/0207	9	{district heating system}	F24D11/02	F24D11/02		120
F24D11/0214	9	{water heating system}	F24D11/02	F24D11/02		856
F24D11/0221	10	{combined with solar energy}	F24D11/02	F24D11/02		901
F24D11/0228	10	{combined with conventional heater}	F24D11/02	F24D11/02		283
F24D11/0235	10	{with recuperation of waste energy}	F24D11/02	F24D11/02		249
F24D11/0242	11	{contained in exhausted air}	F24D11/02	F24D11/02		125
F24D11/025	11	{contained in waste water}	F24D11/02	F24D11/02		124
F24D11/0257	9	{air heating system}	F24D11/02	F24D11/02		119
F24D11/0264	10	{combined with solar energy}	F24D11/02	F24D11/02		95
F24D11/0271	10	{combined with conventional energy}	F24D11/02	F24D11/02		28
F24D11/0278	10	{with recuperation of waste energy}	F24D11/02	F24D11/02		36
F24D11/0285	11	{contained in exhausted air}	F24D11/02	F24D11/02		78
F24D11/0292	11	{contained in waste water}	F24D11/02	F24D11/02		7
F24D12/00	7	Other central heating systems	F24D12/00	F24D12/00		121
F24D12/02	8	having more than one heat source (using heat pumps, in water central heating systems F24D3/18; in air central heating systems F24D5/12; in systems using heat storage masses F24D11/02)	F24D12/02	F24D12/02		1718
F24D13/00	7	Electric heating systems	F24D13/00	F24D13/00		1820
F24D13/02	8	solely using resistance heating, e.g. underfloor heating	F24D13/02	F24D13/02		2253
F24D13/022	9	{resistances incorporated in construction elements}	F24D13/02	F24D13/02		1036
F24D13/024	10	{in walls, floors, ceilings}	F24D13/02	F24D13/02		2439
F24D13/026	10	{in door, windows}	F24D13/02	F24D13/02		122
F24D13/028	10	{Glass panels, e.g. mirrors, design radiators, etc.}	F24D13/02	F24D13/02		71
F24D13/04	8	using electric heating of heat-transfer fluid in separate units of the system	F24D13/04	F24D13/04		1585
F24D15/00	7	Other domestic- or space-heating systems	F24D15/00	F24D15/00		1609
F24D15/02	8	consisting of self-contained heating units, e.g. storage heaters	F24D15/02	F24D15/02		1984
F24D15/04	8	using heat pumps	F24D15/04	F24D15/04		1495
F24D17/00	7	Domestic hot-water supply systems	F24D17/00	F24D17/00		1240
F24D17/0005	8	{using recuperation of waste heat (F24D17/0036 takes precedence)}	F24D17/00	F24D17/00		578
F24D17/001	9	{with accumulation of heated water}	F24D17/00	F24D17/00		425
F24D17/0015	8	{using solar energy (F24D17/0036 takes precedence)}	F24D17/00	F24D17/00		171
F24D17/0021	9	{with accumulation of the heated water}	F24D17/00	F24D17/00		745
F24D17/0026	8	{with conventional heating means (F24D17/0036 takes precedence)}	F24D17/00	F24D17/00		268
F24D17/0031	9	{with accumulation of the heated water}	F24D17/00	F24D17/00		429
F24D17/0036	8	{with combination of different kinds of heating means}	F24D17/00	F24D17/00		143
F24D17/0042	9	{recuperated waste heat and solar energy}	F24D17/00	F24D17/00		24
F24D17/0047	10	{with accumulation of the heated water}	F24D17/00	F24D17/00		58
F24D17/0052	9	{recuperated waste heat and conventional heating means}	F24D17/00	F24D17/00		95
F24D17/0057	10	{with accumulation of the heated water}	F24D17/00	F24D17/00		77
F24D17/0063	9	{solar energy and conventional heaters}	F24D17/00	F24D17/00		59
F24D17/0068	10	{with accumulation of the heated water}	F24D17/00	F24D17/00		353
F24D17/0073	8	{Arrangements for preventing the occurrence or proliferation of microorganisms in the water}	F24D17/00	F24D17/00		588
F24D17/0078	8	{Recirculation systems}	F24D17/00	F24D17/00		900
F24D17/0084	9	{Coaxial tubings}	F24D17/00	F24D17/00		83
F24D17/0089	8	{Additional heating means, e.g. electric heated buffer tanks or electric continuous flow heaters, located close to the consumer, e.g. directly before the water taps in bathrooms, in domestic hot water lines}	F24D17/00	F24D17/00		250
F24D17/0094	8	{Recovering of cold water}	F24D17/00	F24D17/00		104
F24D17/02	8	using heat pumps	F24D17/02	F24D17/02		2262
F24D18/00	7	Small-scale combined heat and power [CHP] generation systems specially adapted for domestic heating, space heating or domestic hot-water supply<br><br><u>NOTE</u><br><br>In this group, it is desirable to add the indexing codes of groups F24D2101/00 - F24D2105/00.	F24D18/00	F24D18/00		1501
F24D19/00	7	Details (of water or air heaters F24H9/00; of heat-exchange or heat-transfer apparatus, of general application F28F)	F24D19/00	F24D19/00		2762
F24D19/0002	8	{Means for connecting central heating radiators to circulation pipes}	F24D19/00	F24D19/00		1260
F24D19/0004	9	{In a one pipe system}	F24D19/00	F24D19/00		160
F24D19/0007	10	{Comprising regulation means}	F24D19/00	F24D19/00		188
F24D19/0009	9	{In a two pipe system}	F24D19/00	F24D19/00		114
F24D19/0012	10	{Comprising regulation means}	F24D19/00	F24D19/00		245
F24D19/0014	9	{Connection means adaptable for one and two pipe systems}	F24D19/00	F24D19/00		38
F24D19/0017	9	{Connections between supply and inlet or outlet of central heating radiators}	F24D19/00	F24D19/00		51
F24D19/0019	10	{Means for adapting connections}	F24D19/00	F24D19/00		97
F24D19/0021	10	{Flexible tubes or hoses}	F24D19/00	F24D19/00		52
F24D19/0024	10	{Connections for plate radiators}	F24D19/00	F24D19/00		89
F24D19/0026	9	{Places of the inlet on the radiator}	F24D19/00	F24D19/00		43
F24D19/0029	10	{on a top corner}	F24D19/00	F24D19/00		64
F24D19/0031	10	{on the top in the middle}	F24D19/00	F24D19/00		3
F24D19/0034	10	{on a bottom corner}	F24D19/00	F24D19/00		102
F24D19/0036	10	{on the bottom in the middle}	F24D19/00	F24D19/00		83
F24D19/0039	9	{Places of the outlet on the radiator}	F24D19/00	F24D19/00		4
F24D19/0041	10	{on the top in the middle}	F24D19/00	F24D19/00		1
F24D19/0043	10	{on the opposite top corner}	F24D19/00	F24D19/00		7
F24D19/0046	10	{on the top on the same side}	F24D19/00	F24D19/00		8
F24D19/0048	10	{on the bottom in the middle}	F24D19/00	F24D19/00		85
F24D19/0051	10	{on the bottom on the opposite corner}	F24D19/00	F24D19/00		50
F24D19/0053	10	{on the bottom on the same side}	F24D19/00	F24D19/00		97
F24D19/0056	9	{Supplies from the central heating system}	F24D19/00	F24D19/00		26
F24D19/0058	10	{coming out the floor}	F24D19/00	F24D19/00		28
F24D19/006	11	{Alongside the radiator}	F24D19/00	F24D19/00		30
F24D19/0063	11	{under the radiator}	F24D19/00	F24D19/00		110
F24D19/0065	10	{coming out the wall}	F24D19/00	F24D19/00		29
F24D19/0068	11	{alongside the radiator}	F24D19/00	F24D19/00		2
F24D19/007	11	{under the radiator}	F24D19/00	F24D19/00		3
F24D19/0073	9	{Means for changing the flow of the fluid inside a radiator}	F24D19/00	F24D19/00		231
F24D19/0075	9	{Valves for isolating the radiator from the system}	F24D19/00	F24D19/00		131
F24D19/0078	9	{Plugs}	F24D19/00	F24D19/00		64
F24D19/008	8	{Details related to central heating radiators}	F24D19/00	F24D19/00		471
F24D19/0082	9	{Humidifiers for radiators}	F24D19/00	F24D19/00		849
F24D19/0085	9	{Fresh air entries for air entering the room to be heated by the radiator}	F24D19/00	F24D19/00		110
F24D19/0087	9	{Fan arrangements for forced convection}	F24D19/00	F24D19/00		384
F24D19/009	9	{Magnets, e.g. for attaching a cover}	F24D19/00	F24D19/00		17
F24D19/0092	8	{Devices for preventing or removing corrosion, slime or scale}	F24D19/00	F24D19/00		1061
F24D19/0095	8	{Devices for preventing damage by freezing}	F24D19/00	F24D19/00		419
F24D19/0097	8	{Casings or frame structures for hydraulic components}	F24D19/00	F24D19/00		358
F24D19/02	8	Arrangement of mountings or supports for radiators	F24D19/02	F24D19/02		1553
F24D19/0203	9	{Types of supporting means}	F24D19/02	F24D19/02		379
F24D19/0206	10	{Tube shaped supports inserted into a wall}	F24D19/02	F24D19/02		132
F24D19/0209	10	{Supporting means having bracket}	F24D19/02	F24D19/02		710
F24D19/0213	10	{Floor mounted supporting means}	F24D19/02	F24D19/02		557
F24D19/0216	10	{Supporting means having a rail}	F24D19/02	F24D19/02		360
F24D19/022	9	{Constructional details of supporting means for radiators}	F24D19/02	F24D19/02		116
F24D19/0223	10	{Distance pieces between the radiator and the wall}	F24D19/02	F24D19/02		103
F24D19/0226	10	{Additional means supporting the process of mounting}	F24D19/02	F24D19/02		102
F24D19/023	10	{Radiators having fixed suspension means for connecting the radiator to the support means}	F24D19/02	F24D19/02		254
F24D19/0233	10	{Templates for installing the radiator}	F24D19/02	F24D19/02		76
F24D19/0236	10	{Water tubes or pipes forming part of the supporting means}	F24D19/02	F24D19/02		111
F24D19/024	9	{Functioning details of supporting means for radiators}	F24D19/02	F24D19/02		311
F24D19/0243	10	{Means for moving the radiator horizontally to adjust the radiator position}	F24D19/02	F24D19/02		217
F24D19/0246	10	{Means for moving the radiator vertically to adjust the radiator position}	F24D19/02	F24D19/02		290
F24D19/025	10	{Eccentric means for moving the radiator vertically}	F24D19/02	F24D19/02		58
F24D19/0253	10	{Adjusting a dimension, e.g. length, of the radiator support, e.g. telescopic rails}	F24D19/02	F24D19/02		102
F24D19/0256	10	{Radiators clamped by supporting means}	F24D19/02	F24D19/02		141
F24D19/0259	11	{Radiators clamped by supporting means around a column or tube}	F24D19/02	F24D19/02		102
F24D19/0263	11	{Radiators clamped by supporting means between two columns or tubes}	F24D19/02	F24D19/02		152
F24D19/0273	10	{Radiators fixed in order to prevent undesired detachment}	F24D19/02	F24D19/02		54
F24D19/0276	11	{Radiators fixed on the bottom}	F24D19/02	F24D19/02		59
F24D19/0279	11	{Radiators fixed on the sides}	F24D19/02	F24D19/02		36
F24D19/0283	11	{Radiators fixed on the top}	F24D19/02	F24D19/02		235
F24D19/0286	11	{Radiators fixed using a spring}	F24D19/02	F24D19/02		155
F24D19/0289	11	{Radiators fixed using a flexible clip}	F24D19/02	F24D19/02		60
F24D19/0293	10	{Radiators rotating without being demounted}	F24D19/02	F24D19/02		179
F24D19/04	9	in skirtings	F24D19/04	F24D19/04		373
F24D19/06	8	Casings, cover lids or ornamental panels, for radiators	F24D19/06	F24D19/06		1944
F24D19/061	9	{Radiator shelves}	F24D19/06	F24D19/06		196
F24D19/062	9	{Heat reflecting or insulating shields}	F24D19/06	F24D19/06		241
F24D19/064	9	{Coverings not directly attached to a radiator, e.g. box-like coverings}	F24D19/06	F24D19/06		128
F24D19/065	9	{Grids attached to the radiator and covering its top}	F24D19/06	F24D19/06		192
F24D19/067	9	{Front coverings attached to the radiator}	F24D19/06	F24D19/06		116
F24D19/068	9	{Side coverings attached to the radiator}	F24D19/06	F24D19/06		38
F24D19/08	8	Arrangements for drainage, venting or aerating (valves for venting or aerating F16K24/00)	F24D19/08	F24D19/08		313
F24D19/081	9	{for steam heating systems}	F24D19/08	F24D19/08		955
F24D19/082	9	{for water heating systems}	F24D19/08	F24D19/08		183
F24D19/083	10	{Venting arrangements}	F24D19/08	F24D19/08		789
F24D19/085	11	{Arrangement of venting valves for central heating radiators}	F24D19/08	F24D19/08		63
F24D19/086	12	{hand-operated}	F24D19/08	F24D19/08		173
F24D19/087	12	{automatic}	F24D19/08	F24D19/08		261
F24D19/088	10	{Draining arrangements}	F24D19/08	F24D19/08		439
F24D19/10	8	Arrangement or mounting of control or safety devices (only the heater being controlled F24H9/20)	F24D19/10	F24D19/10		1704
F24D19/1003	9	{for steam heating systems}	F24D19/10	F24D19/10		509
F24D19/1006	9	{for water heating systems}	F24D19/10	F24D19/10		1945
F24D19/1009	10	{for central heating}	F24D19/10	F24D19/10		2512
F24D19/1012	11	{by regulating the speed of a pump}	F24D19/10	F24D19/10		963
F24D19/1015	11	{using a valve or valves}	F24D19/10	F24D19/10		3120
F24D19/1018	12	{Radiator valves}	F24D19/10	F24D19/10		932
F24D19/1021	12	{a by pass valve}	F24D19/10	F24D19/10		166
F24D19/1024	12	{a multiple way valve}	F24D19/10	F24D19/10		423
F24D19/1027	13	{hand operated}	F24D19/10	F24D19/10		15
F24D19/103	13	{bimetal operated}	F24D19/10	F24D19/10		30
F24D19/1033	13	{motor operated}	F24D19/10	F24D19/10		166
F24D19/1036	12	{Having differential pressure measurement facilities}	F24D19/10	F24D19/10		172
F24D19/1039	11	{the system uses a heat pump}	F24D19/10	F24D19/10		1223
F24D19/1042	11	{the system uses solar energy}	F24D19/10	F24D19/10		525
F24D19/1045	11	{the system uses a heat pump and solar energy}	F24D19/10	F24D19/10		312
F24D19/1048	11	{Counting of energy consumption}	F24D19/10	F24D19/10		665
F24D19/1051	10	{for domestic hot water}	F24D19/10	F24D19/10		1653
F24D19/1054	11	{the system uses a heat pump}	F24D19/10	F24D19/10		667
F24D19/1057	11	{the system uses solar energy}	F24D19/10	F24D19/10		372
F24D19/106	11	{the system uses a heat pump and solar energy}	F24D19/10	F24D19/10		110
F24D19/1063	11	{counting of energy consumption}	F24D19/10	F24D19/10		188
F24D19/1066	10	{for the combination of central heating and domestic hot water}	F24D19/10	F24D19/10		1302
F24D19/1069	11	{regulation in function of the temperature of the domestic hot water}	F24D19/10	F24D19/10		442
F24D19/1072	11	{the system uses a heat pump}	F24D19/10	F24D19/10		459
F24D19/1075	11	{the system uses solar energy}	F24D19/10	F24D19/10		190
F24D19/1078	11	{the system uses a heat pump and solar energy}	F24D19/10	F24D19/10		141
F24D19/1081	11	{counting of energy consumption}	F24D19/10	F24D19/10		176
F24D19/1084	9	{for air heating systems}	F24D19/10	F24D19/10		616
F24D19/1087	10	{system using a heat pump}	F24D19/10	F24D19/10		132
F24D19/109	10	{system using solar energy}	F24D19/10	F24D19/10		106
F24D19/1093	10	{system using a heat pump and solar energy}	F24D19/10	F24D19/10		23
F24D19/1096	9	{for electric heating systems}	F24D19/10	F24D19/10		2853
F24D2101/00	7	Electric generators of small-scale CHP systems	F24D101/00	F24D101/00		50
F24D2101/10	8	Gas turbines; Steam engines or steam turbines; Water turbines, e.g. located in water pipes	F24D101/10	F24D101/10		372
F24D2101/20	8	Wind turbines	F24D101/20	F24D101/20		92
F24D2101/30	8	Fuel cells	F24D101/30	F24D101/30		265
F24D2101/40	8	Photovoltaic [PV] modules	F24D101/40	F24D101/40		383
F24D2101/50	8	Thermophotovoltaic [TPV] modules	F24D101/50	F24D101/50		106
F24D2101/60	8	Thermoelectric generators, e.g. Peltier or Seebeck elements	F24D101/60	F24D101/60		153
F24D2101/70	8	Electric generators driven by internal combustion engines [ICE]	F24D101/70	F24D101/70		221
F24D2101/80	8	Electric generators driven by external combustion engines, e.g. Stirling engines	F24D101/80	F24D101/80		99
F24D2103/00	7	Thermal aspects of small-scale CHP systems	F24D103/00	F24D103/00		3
F24D2103/10	8	Small-scale CHP systems characterised by their heat recovery units	F24D103/10	F24D103/10		18
F24D2103/13	9	characterised by their heat exchangers	F24D103/13	F24D103/13		507
F24D2103/17	9	Storage tanks	F24D103/17	F24D103/17		256
F24D2103/20	8	Additional heat sources for supporting thermal peak loads	F24D103/20	F24D103/20		53
F24D2105/00	7	Constructional aspects of small-scale CHP systems	F24D105/00	F24D105/00		86
F24D2105/10	8	Sound insulation	F24D105/10	F24D105/10		55
F24D2200/00	7	Heat sources or energy sources	CPCONLY	F24D2200/00		18
F24D2200/02	8	Photovoltaic energy	CPCONLY	F24D2200/02		457
F24D2200/04	8	Gas or oil fired boiler	CPCONLY	F24D2200/04		1452
F24D2200/043	9	More than one gas or oil fired boiler	CPCONLY	F24D2200/043		202
F24D2200/046	9	Condensing boilers	CPCONLY	F24D2200/046		85
F24D2200/06	8	Solid fuel fired boiler	CPCONLY	F24D2200/06		204
F24D2200/062	9	Coal fired boilers	CPCONLY	F24D2200/062		77
F24D2200/065	9	Wood fired boilers	CPCONLY	F24D2200/065		82
F24D2200/067	10	Pellet fired boilers	CPCONLY	F24D2200/067		39
F24D2200/07	8	Solid fuel burners	CPCONLY	F24D2200/07		54
F24D2200/08	8	Electric heater	CPCONLY	F24D2200/08		3251
F24D2200/10	8	Fire place	CPCONLY	F24D2200/10		173
F24D2200/11	8	Geothermal energy	CPCONLY	F24D2200/11		880
F24D2200/115	9	Involving mains water supply	CPCONLY	F24D2200/115		63
F24D2200/12	8	Heat pump	CPCONLY	F24D2200/12		1808
F24D2200/123	9	Compression type heat pumps	CPCONLY	F24D2200/123		1121
F24D2200/126	9	Absorption type heat pumps	CPCONLY	F24D2200/126		199
F24D2200/13	8	Heat from a district heating network	CPCONLY	F24D2200/13		276
F24D2200/14	8	Solar energy	CPCONLY	F24D2200/14		2304
F24D2200/15	8	Wind energy	CPCONLY	F24D2200/15		148
F24D2200/16	8	Waste heat	CPCONLY	F24D2200/16		521
F24D2200/18	9	Flue gas recuperation	CPCONLY	F24D2200/18		772
F24D2200/19	9	Fuel cells	CPCONLY	F24D2200/19		137
F24D2200/20	9	Sewage water	CPCONLY	F24D2200/20		527
F24D2200/22	9	Ventilation air	CPCONLY	F24D2200/22		285
F24D2200/24	9	Refrigeration	CPCONLY	F24D2200/24		88
F24D2200/26	9	Internal combustion engine	CPCONLY	F24D2200/26		326
F24D2200/28	9	Biological processes	CPCONLY	F24D2200/28		39
F24D2200/29	9	Electrical devices, e.g. computers, servers	CPCONLY	F24D2200/29		122
F24D2200/30	9	Friction	CPCONLY	F24D2200/30		130
F24D2200/31	9	Air conditioning systems	CPCONLY	F24D2200/31		98
F24D2200/32	8	involving multiple heat sources in combination or as alternative heat sources	CPCONLY	F24D2200/32		480
F24D2220/00	7	Components of central heating installations excluding heat sources	CPCONLY	F24D2220/00		4
F24D2220/003	8	Generic central heating systems	CPCONLY	F24D2220/003		10
F24D2220/006	8	Parts of a building integrally forming part of heating systems, e.g. a wall as a heat storing mass	CPCONLY	F24D2220/006		164
F24D2220/02	8	Fluid distribution means	CPCONLY	F24D2220/02		107
F24D2220/0207	9	Pumps	CPCONLY	F24D2220/0207		902
F24D2220/0214	9	Inlets or outlets	CPCONLY	F24D2220/0214		50
F24D2220/0221	9	Mixing cylinders	CPCONLY	F24D2220/0221		36
F24D2220/0228	9	Branched distribution conduits	CPCONLY	F24D2220/0228		328
F24D2220/0235	9	Three-way-valves	CPCONLY	F24D2220/0235		438
F24D2220/0242	9	Multiple way valves	CPCONLY	F24D2220/0242		122
F24D2220/025	9	Check valves	CPCONLY	F24D2220/025		214
F24D2220/0257	9	Thermostatic valves	CPCONLY	F24D2220/0257		226
F24D2220/0264	9	Hydraulic balancing valves	CPCONLY	F24D2220/0264		140
F24D2220/0271	9	Valves	CPCONLY	F24D2220/0271		1068
F24D2220/0278	9	Expansion vessels	CPCONLY	F24D2220/0278		126
F24D2220/0285	9	Pipe sections	CPCONLY	F24D2220/0285		235
F24D2220/0292	9	Fluid distribution networks	CPCONLY	F24D2220/0292		165
F24D2220/04	8	Sensors	CPCONLY	F24D2220/04		151
F24D2220/042	9	Temperature sensors	CPCONLY	F24D2220/042		2731
F24D2220/044	9	Flow sensors	CPCONLY	F24D2220/044		698
F24D2220/046	9	Pressure sensors	CPCONLY	F24D2220/046		389
F24D2220/048	9	Level sensors, e.g. water level sensors	CPCONLY	F24D2220/048		378
F24D2220/06	8	Heat exchangers	CPCONLY	F24D2220/06		460
F24D2220/07	8	Heat pipes	CPCONLY	F24D2220/07		296
F24D2220/08	8	Storage tanks	CPCONLY	F24D2220/08		1106
F24D2220/10	8	Heat storage materials, e.g. phase change materials or static water enclosed in a space	CPCONLY	F24D2220/10		875
F24D2220/20	8	Heat consumers	CPCONLY	F24D2220/20		48
F24D2220/2009	9	Radiators	CPCONLY	F24D2220/2009		268
F24D2220/2018	10	Column radiators having vertically extending tubes	CPCONLY	F24D2220/2018		569
F24D2220/2027	10	Convectors (radiators wherein heat transfer mainly takes place by convection)	CPCONLY	F24D2220/2027		89
F24D2220/2036	10	Electric radiators	CPCONLY	F24D2220/2036		594
F24D2220/2045	10	Radiators having horizontally extending tubes	CPCONLY	F24D2220/2045		150
F24D2220/2054	10	Panel radiators with or without extended convection surfaces	CPCONLY	F24D2220/2054		535
F24D2220/2063	10	Central heating radiators having heat storage material incorporated	CPCONLY	F24D2220/2063		79
F24D2220/2072	10	Radiators being skirting boards between floor and wall or ledges between wall and ceiling	CPCONLY	F24D2220/2072		74
F24D2220/2081	9	Floor or wall heating panels	CPCONLY	F24D2220/2081		848
F24D2220/209	9	Sanitary water taps	CPCONLY	F24D2220/209		62
F24D2240/00	7	Characterizing positions, e.g. of sensors, inlets, outlets	CPCONLY	F24D2240/00		19
F24D2240/10	8	Placed within or inside of	CPCONLY	F24D2240/10		113
F24D2240/12	8	Placed outside of	CPCONLY	F24D2240/12		23
F24D2240/20	8	Placed at top position	CPCONLY	F24D2240/20		32
F24D2240/22	8	Placed at bottom position	CPCONLY	F24D2240/22		70
F24D2240/24	8	Placed at centre position	CPCONLY	F24D2240/24		2
F24D2240/243	9	Vertically centred	CPCONLY	F24D2240/243		7
F24D2240/246	9	Horizontally centred	CPCONLY	F24D2240/246		
F24D2240/26	8	Vertically distributed at fixed positions, e.g. multiple sensors distributed over the height of a tank, or a vertical inlet distribution pipe having a plurality of orifices	CPCONLY	F24D2240/26		203
F24D2240/28	8	Horizontally distributed at fixed positions	CPCONLY	F24D2240/28		1
F24D2240/30	8	At vertical variable positions, e.g. a movable inlet pipe within a tank	CPCONLY	F24D2240/30		21
F24D2240/32	8	At horizontal variable positions	CPCONLY	F24D2240/32		
