This video clip demonstrates the feature for double pipe heat exchanger (DHex) software

Oil Heat Exchanger Example

General timeline:
00:00:00 Example Oil exchanger
00:08:56 Adding a Nusselt correlation

Software features example

General timeline:
00:00:00 General Features
00:01:46 Importing physical properties from software database file
00:03:00 Units of measurement and Units Converter
00:04:12 User Databases
00:05:47 Nusselt number correlations add your own correlation!
00:07:01 Importing physical properties from Microsoft Excel