Yearly Archives: 2025

Gravitational separation of liquid and vapor also plays an important part in the functioning of condensers, of which many designs exist, their nature determined largely by the ratio of the condensed to the uncondensed components in the fluid stream being cooled. Even when the cooled stream is nominally wholly condensable, as is true of stream...

Evaporators, boilers, and reboilers   When the function of the heat exchanger is to cause one of the fluid streams to change from the liquid to the vapor phase, it is common for a modified shell-and-tube construction to be employed. Compared with the no-phase-change equipment discussed in Sec. B, vapor producing heat exchangers are usually...

The designs differ in the following ways, among others:

Most unfired heat exchangers, operating with fluids that do not change phase, are of baffled shell-and-tube design, by which is meant that one of the fluids flows within straight or hairpin-bent tubes, whereas the other flow between and around those tubes, within an ah-confining shell, being guided in its path by baffles. These baffles serve...

Plain tubes The most common arrangement is for one fluid to flow within straight or curved tubes of circular cross section, while a second fluid washes the outside of these tubes in a longitudinal, perpendicular, or oblique direction. The interface is thus represented by a tube wall, and contact is indirect. The tubes may, of […]