| 165 / | HD | HEAT EXCHANGE |
| DIG 135 | DD | MOVABLE HEAT EXCHANGER {4} |
| DIG 139 | DD | .~ Fully rotatable {5} |
| DIG 156 | | .~.~ Hollow cylindrical member (e.g., drum, etc.) {3} |
| DIG 157 | DD | .~.~.~> Fluid sprayed onto surface of rotatable cylinder |
| DIG 158 | DD | .~.~.~> Having stationary material removal means |
| DIG 159 | DD | .~.~.~> With particular flow path or defined fluid chamber (e.g., annulus, spiral, etc.) {1} |