General calculation method for stagewise models of mass and heat transfer operations

✍ Scribed by Harry V. Nordén; Martti A. Pekkanen

• Publisher: Elsevier Science
• Year: 1989
• Tongue: English
• Weight: 943 KB
• Volume: 44
• Category: Article
• ISSN: 0009-2509
• DOI: 10.1016/0009-2509(89)85071-7

✦ Synopsis

The paper presents a new calculation method for steady-state stagewise mass and heat transfer operations. The method is restricted to linear equilibrium relationships. The ideal stage model used is a new one and equations obtained are quite simple which makes the treatment of complicated flow sheets possible. For practical calculations the equations are presented in matrix form. Equations are derived for various side streams and for piecewise linear equilibrium relationship. The calculation method can also be applied to continuous contact operations if the number of ideal stages N can be expressed by the equivalent number of transfer units No,. This makes it applicable to heat transfer, too. A very general flow rate transformation is presented by means of which constant flow rates may be obtained.