# Difference between revisions of "OLI Flowsheet Frequently Asked Questions (FAQ)"

From wiki.olisystems.com

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H-Balance -> Enthalpy Balance across tower Out - In<br> | H-Balance -> Enthalpy Balance across tower Out - In<br> | ||

Sumx+Sumy -> MBG group balance across tower Out - In<br> | Sumx+Sumy -> MBG group balance across tower Out - In<br> | ||

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+ | == Enabling additional calculations == | ||

+ | ; Question: | ||

+ | : I need a property that is not available in the calculation such as viscosity. How to I obtain such a value? | ||

+ | ; Answer: See our video on this subject [[Enabling optional calculations in OLI Flowsheet]] | ||

+ | |||

## Latest revision as of 16:34, 12 October 2020

Frequently asked questions about the OLI Flowsheet ESP program

## Contents |

## Import / Export

- Question
*How do you copy and paste streams and water analysis samples from OLI Studio or OLI ScaleChem to OLI Flowsheet?*- Answer
- See the link - How to copy and paste from OLI Studio to OLI Flowsheet: ESP

## Multi-Stage unit operations (Columns)

### Column trace information

What does the information in the below image mean to the user?

Norm -> Square root of the sum of squares of the departure of the VLE equations (residuals) of the tower. The smaller the norm equates to solution confidence

Residual -> The result of the tower equation with the largest deviation from 0 (0 implies solved).

VLE -> Sum of Yi/Xi of all species Y – Vapor : X – Liq 1

M-Balance -> Mass balance across tower Out - In

H-Balance -> Enthalpy Balance across tower Out - In

Sumx+Sumy -> MBG group balance across tower Out - In

## Enabling additional calculations

- Question
- I need a property that is not available in the calculation such as viscosity. How to I obtain such a value?
- Answer
- See our video on this subject Enabling optional calculations in OLI Flowsheet