F24J 1/00
|
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
|
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;semiconductor devices specially adapted for converting solar energy into electrical energy H01L 31/00;photovoltaic [PV] cells including means directly associated with the PV cell to utilise heat energy H01L 31/525;PV modules including means associated with the PV module to utilise heat energy H02S 40/44) |
F24J 2/02
|
Solar heat collectors with support for article heated, e.g. stoves, ranges, crucibles, furnaces or ovens using solar heat |
F24J 2/04
|
Solar heat collectors having working fluid conveyed through collector |
F24J 2/05
|
surrounded by a transparent enclosure, e.g. evacuated solar collectors |
F24J 2/06
|
having concentrating elements (optical elements or systems per seG02B) |
F24J 2/07
|
Receivers working at high temperature, e.g. for solar power plants |
F24J 2/08
|
having lenses as concentrating elements |
F24J 2/10
|
having reflectors as concentrating elements |
F24J 2/12
|
parabolic |
F24J 2/13
|
hemispherical |
F24J 2/14
|
semi-cylindrical or cylindro-parabolic |
F24J 2/15
|
conical |
F24J 2/16
|
having flat plates |
F24J 2/18
|
spaced, opposed interacting reflecting surfaces |
F24J 2/20
|
the working fluid being conveyed between plates |
F24J 2/22
|
having extended surfaces, e.g. protrusions, corrugations (F24J 2/28 takes precedence) |
F24J 2/23
|
the working fluid trickling freely over collector elements |
F24J 2/24
|
the working fluid being conveyed through tubular heat absorbing conduits |
F24J 2/26
|
having extended surfaces, e.g. protrusions (F24J 2/28 takes precedence) |
F24J 2/28
|
having permeable mass, foraminous or porous materials |
F24J 2/30
|
with means to exchange heat between plural fluids |
F24J 2/32
|
having evaporator and condenser section, e.g. heat pipe |
F24J 2/34
|
having heat storage mass |
F24J 2/36
|
Rollable or foldable collector units |
F24J 2/38
|
employing tracking means (F24J 2/02, F24J 2/06 take precedence;rotary supports or mountings therefor F24J 2/54;supporting structures of photovoltaic modules for generation of electric power specially adapted for solar tracking systems H02S 20/32) |
F24J 2/40
|
Control arrangements |
F24J 2/42
|
Solar heat systems not otherwise provided for |
F24J 2/44
|
having thermosiphonic circulation |
F24J 2/46
|
Component parts, details or accessories of solar heat collectors |
F24J 2/48
|
characterised by the absorber material |
F24J 2/50
|
Transparent coverings |
F24J 2/51
|
Thermal insulation (F24J 2/50 takes precedence) |
F24J 2/52
|
Arrangement of mountings or supports |
F24J 2/54
|
specially adapted for rotary movement |
F24J 3/00
|
Other production or use of heat, not derived from combustion (use of solar heat F24J 2/00) |
F24J 3/06
|
using natural heat |
F24J 3/08
|
using geothermal heat (devices for producing mechanical power from geothermal energy F03G 4/00) |