| 165 / | HD | HEAT EXCHANGE |
| DIG 163 | DD | INCLUDING A MEANS TO FORM FLUID FILM ON HEAT TRANSFER SURFACE (E.G., TRICKLE) {8} |
| DIG 177 | | .~ Film flows along upper surface of tray {4} |
| DIG 178 | DD | .~.~> Parallel corrugated vertical sheets formed fluid passage therebetween |
| DIG 179 | DD | .~.~> Container enclosed by casing |
| DIG 180 | DD | .~.~> Vertically disposable elongated member |
| DIG 181 | DD | .~.~> Horizontally disposable elongated member |