294. What type of lube oil cooler is shown in the illustration

The illustration depicts a cylindrical shell containing a removable bundle of tubes, which defines a shell-and-tube lube oil cooler. This design features a shell with tubes running between tube sheets, facilitating separate flow paths for oil and water, a characteristic of shell-and-tube heat exchangers. Other options, such as 'bundle and stack,' 'plate type,' or 'self-venting,' describe construction details or features, but not the fundamental exchanger type shown.