| 165 / | HD | HEAT EXCHANGE |
| DIG 184 | DD | INDIRECT-CONTACT CONDENSER {12} |
| DIG 217 | | .~ Space for coolant surrounds space for vapor {4} |
| DIG 218 | DD | .~.~> Condensor adapted to cover opening at top of vapor generator {1} |
| DIG 220 | DD | .~.~> U-shaped or spur tubes connected to adjacent inlet and outlet headers |
| DIG 221 | DD | .~.~> Vapor is the only confined fluid {1} |
| DIG 223 | DD | .~.~> Vapor tube enclosed by coolant confining shell |