Averaging CPs

Averaging CPs - having an outlet liquid fraction of 0.001...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
T H T S T T T B H vap CP L * dT CP V * dT The green dashed line represents the approximation if you average the duty of the exchanger over the temperature range. The quality of the approximation depends on the relative values of CP L , CP V and H vap
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Liquid @ T s Vapor @ T t Q Liquid @ T s Liquid @ T b Q 1 Vapor @ T b Vapor @ T t Q 2 Q 3 Can be specified in Aspen as having an outlet vapor fraction of 0.001 Can be specified in Aspen as
Background image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: having an outlet liquid fraction of 0.001 Specify outlet temperature at T t APPROXIMATION PROCEDURE For mixtures with very different boiling points of the constituents the outlet temperatures in exchangers 1 and 2 will be quite different, but it will still give a better approximation than just an average over the entire temperature range....
View Full Document

Page1 / 2

Averaging CPs - having an outlet liquid fraction of 0.001...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online