Double Pipe Heat Exchanger Design (DHex) 1.1 descriptions DHex is a software tool that is made to demonstrate the chemical design calculations of Double pipe Heat Exchangers. The software will do all the thermal calculations involved in the design & will generate a summary of all results List of main functions: +Step by step calculation +Support S. I Units & English Units of mesurement. +User database functions to allow user to add/delete components & load to hot/cold side . +Ability to import properties to Hot/Cold sides from Microsoft Excel. +Ability to calculate unknown Cold or Hot side temperatures. +Perform thermal analysis for bare tube double pipe heat exchangers. +Perform thermal analysis for finned tube double pipe heat exchangers. +Choose from Counter Current or Co-Current Flow arrangement. +Choose from Series arrangement or Series-Parallel arrangement. +The software will also tell you the location of Hot/Cold fluids within the heat exchanger . +Select from different correlations to calculate Cold/Hot side heat transfer coefficient. Also the ability to adjust Nusselt number if you do have a different correlation. +Calculate the Area Flow area Length Log Mean Temperature Difference Number of Hairpins Unknown Flow rate. +Calculate the scale resistance Equivalent Diameter. +Calculate Pipe/Annulus side Reynolds Nusselt numbers Prandtl Numbers +Duty Calculation Clean & Design Overall heat transfer coefficient calculations. +Pipe/Annulus velocities & Mass velocity calculations +Number of Transfer Units & Thermal Capacity ratio calculation +Clean & Fouled Fin Efficiency calculations for finned tube heat exchanger. +Pressure drop calculations Entrance & Exit losses. +Export Results summary to Microsoft Excel +Save/Load results. Generate/Print a summary of results. For more information visit http://www. webbusterz. com or http://www. webbusterz. net