| F | SK | MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING |
| F24 | KL | HEATING; RANGES; VENTILATING (protecting plants by heating in gardens, orchards, or forests A01G 13/06; baking ovens and apparatus A21B; cooking devices other than ranges A47J; forging B21J , B21K; specially adapted for vehicles, see the relevant subclasses of classes B60 to B64; combustion apparatus in general F23; drying F26B; ovens in general F27; electric heating elements or arrangements H05B) |
| F24J | UKL | PRODUCTION OR USE OF HEAT NOT OTHERWISE PROVIDED FOR (materials therefor C09K 5/00; engines or other mechanisms for producing mechanical power from heat, see the relevant classes, e.g. F03G for using natural heat) |
| F24J 1/00 | HGR | Apparatus or devices using heat produced by exothermal chemical reactions other than by combustion (for cooking-vessels A47J 36/28; self-heating compresses A61F 7/03; materials for the production of heat or cold undergoing non-reversible chemical reactions, other than by combustion, when used C09K 5/18) |
| F24J 2/00 | HGR | Use of solar heat, e.g. solar heat collectors (distillation or evaporation of water using solar energy C02F 1/14; roof covering aspects of energy collecting devices E04D 13/18; devices for producing mechanical power from solar energy F03G 6/00; semi-conductor devices adapted for converting solar energy into electrical energy H01L 25/00 , H01L 31/00; semiconductor devices including arrays of solar cells using heat energy H01L 31/058; generators in which light radiation is directly converted into electrical energy H02N 6/00) [4, 5] |
| F24J 2/02 | UGR1 | | . | Solar heat collectors with support for article heated, e.g. stoves, ranges, crucibles, furnaces or ovens using solar heat [4] |
|
| F24J 2/04 | UGR1 | | . | Solar heat collectors having working fluid conveyed through collector [4] |
|
| F24J 2/05 | UGR2 | | . . | surrounded by a transparent enclosure, e.g. evacuated solar collectors [6] |
|
| F24J 2/06 | UGR2 | | . . | having concentrating elements (optical elements or systems per se G02B) [4] |
|
| F24J 2/07 | UGR3 | | . . . | Receivers working at high temperature, e.g. for solar power plants [6] |
|
| F24J 2/08 | UGR3 | | . . . | having lenses as concentrating elements [4] |
|
| F24J 2/10 | UGR3 | | . . . | having reflectors as concentrating elements [4] |
|
| F24J 2/12 | UGR4 | |
| F24J 2/13 | UGR4 | |
| F24J 2/14 | UGR4 | | . . . . | semi-cylindrical or cylindro-parabolic [4] |
|
| F24J 2/15 | UGR4 | |
| F24J 2/16 | UGR4 | | . . . . | having flat plates [4] |
|
| F24J 2/18 | UGR4 | | . . . . | spaced, opposed interacting reflecting surfaces [4] |
|
| F24J 2/20 | UGR2 | | . . | the working fluid being conveyed between plates [4] |
|
| F24J 2/22 | UGR3 | | . . . | having extended surfaces, e.g. protrusions, corrugations (F24J 2/28 takes precedence) [4] |
|
| F24J 2/23 | UGR2 | | . . | the working fluid trickling freely over collector elements [6] |
|
| F24J 2/24 | UGR2 | | . . | the working fluid being conveyed through tubular heat absorbing conduits [4] |
|
| F24J 2/26 | UGR3 | | . . . | having extended surfaces, e.g. protrusions (F24J 2/28 takes precedence) [4] |
|
| F24J 2/28 | UGR2 | | . . | having permeable mass, foraminous or porous materials [4] |
|
| F24J 2/30 | UGR2 | | . . | with means to exchange heat between plural fluids [4] |
|
| F24J 2/32 | UGR2 | | . . | having evaporator and condenser section, e.g. heat pipe [4] |
|
| F24J 2/34 | UGR2 | | . . | having heat storage mass [4] |
|
| F24J 2/36 | UGR1 | | . | Rollable or foldable collector units [4] |
|
| F24J 2/38 | UGR1 | | . | employing tracking means (F24J 2/02 , F24J 2/06 take precedence; rotary supports or mountings therefor F24J 2/54; direction-finders for determining the direction from which electromagnetic waves are being received G01S 3/78; control of position or direction G05D 3/00) [4] |
|
| F24J 2/40 | UGR1 | | . | Control arrangements [4] |
|
| F24J 2/42 | UGR1 | | . | Solar heat systems not otherwise provided for [4] |
|
| F24J 2/44 | UGR2 | | . . | having thermosiphonic circulation [4] |
|
| F24J 2/46 | UGR1 | | . | Component parts, details or accessories of solar heat collectors [4] |
|
| F24J 2/48 | UGR2 | | . . | characterised by the absorber material [4] |
|
| F24J 2/50 | UGR2 | | . . | Transparent coverings [4] |
|
| F24J 2/51 | UGR2 | | . . | Thermal insulation (F24J 2/50 takes precedence) [6] |
|
| F24J 2/52 | UGR2 | | . . | Arrangement of mountings or supports [4] |
|
| F24J 2/54 | UGR3 | | . . . | specially adapted for rotary movement [6] |
|
| F24J 3/00 | HGR | Other production or use of heat, not derived from combustion (use of solar heat F24J 2/00) |
| F24J 3/06 | UGR1 | |
| F24J 3/08 | UGR2 | | . . | using geothermal heat (devices for producing mechanical power from geothermal energy F03G 4/00) [4, 5] |
|