In Type 3V heat exchanger, the cooling liquid enters from the side and circulates in a spiral toward the center of the unit, where it exits through a manifold attached the lower cover. The vapor enters in the center of the unit through a nozzle located in the upper cover. A separate nozzle collects condensates and non-condensable gases.
See the user manual alfa-laval-spiral-instruction-manual-en.pdf for more details.