English to Greek Tech/Engineering Engineering (general)

A module (or a harp) is an assembly of heat transfer tubes with associated inlet and outlet header.
Each heat transfer system can consist of several separate modules.
Modules can be grouped together into a bundle.
A bundle is a group of modules without an access lane (cavity) between the modules, but with an access lane upstream the first and downstream the last module.
A bundle can consist of group of modules from different heat transfer systems and/or different pressure systems