| 126 / | HD | STOVES AND FURNACES |
| 569 | DF | SOLAR HEAT COLLECTOR {18} |
| 634 | ![]() | .~ With means to convey fluent medium through collector {7} |
| 635 | DF | .~.~> Having evaporator and condenser sections (e.g., heat pipe) {1} |
| 638 | DF | .~.~> Thermosyphonic fluid circulation {1} |
| 640 | DF | .~.~> With storage tank for fluent medium {2} |
| 643 | DF | .~.~> With heat exchanger {2} |
| 646 | DF | .~.~> Pump {1} |
| 648 | DF | .~.~> With radiation trap {2} |
| 651 | DF | .~.~> Conduit absorber structure {9} |