View source for SysCAD 137 New Models and Add-On

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[[Category:SysCAD Versions and Builds]] [[Category:Legacy]]
{{Navigation|[[User Guide]]|[[SysCAD Version History]]|[[Build 137 Release Notes]]|altname=New Models and Add-On}}
{{Whats New in Build137 header table|currentpage=1}}

'''Related Links:''' [[Revision_History_for_SysCAD_9.3#Changes_in_SysCAD_9.3_Build_137|Build 137 Revision History]], [[Upgrading Projects]]
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= New Models =

== [[Direct Contact Heater 2]] ==

:[[Image:Direct Contact Heater2.png|250 px]]  (Full documentation of this unit operation can be found here: [[Direct Contact Heater 2]])

*The new Direct Contact Heater 2 is used to transfer energy from a stream containing live steam to a liquid or slurry stream. 
*It has additional options and improved functionality compared to the original [[Direct Contact Heater]] model which includes:
*#Pressure specification
*#Vent stream Handling
*The model can make use of the [[Demand]] logic, including as part of a [[Flash Train]].

== [[Pressure Exchanger]] ==

:[[Image:Pressure Exchanger.png]] (Full documentation of this unit operation can be found here: [[Pressure Exchanger]])

*The new Pressure Exchanger unit model can be used to model energy recovery devices such as those used in reverse osmosis plants to recover energy from high pressure brine streams.
*The unit has two feeds, a low pressure feed and a high pressure feed. The pressure energy in the high pressure feed is transferred to the low pressure stream, thus acting like a pump for the low pressure stream, increasing its pressure.
*The model can be used to model a wide variety of physical devices such as a Pelton wheel, a Francis turbine, a reverse pump, a Turbocharger and a PX.
*The model includes a leakage parameter to allow for modelling of devices where some mixing can occur.
*The model can make use of the [[Demand]] logic to set the flow on the low pressure side.

== [[Simple Condenser]] ==

:[[Image:SimpleCondenser2.png|250 px]] (Full documentation of this unit operation can be found here: [[Simple Condenser]])

*The new Simple Condenser is a generic "heat exchanger" model without regards to its cooling media or equipment size. 
*It can provide estimates of the Duty required to condense an amount of material, or alternatively, determine the amount of condensation for a given duty or temperature.
*The model can make use of the [[Demand]] logic, including as part of a [[Flash Train]].

== [[Simple Evaporator]] ==

[[Image:SimpleEvaporator.png|300 px]] (Full documentation of this unit operation can be found here: [[Simple Evaporator]])

*The new Simple Evaporator is a generic "heat exchanger" model without regards to its heating media or equipment size. 
*It is designed to give estimates of the Duty required to evaporate a required amount of material. Only a single component can be evaporated such as H2O(l) or NH3(aq).

== [[Slew Rate Controller]] ==

*The new [[Slew Rate Controller]] is used to gradually change a process variable to a setpoint. 
*It can be used in both steady-state and dynamic simulations for the purpose of making gradual changes. 
*It has a number of methods available to make the gradual change including fixed rates and first order response.
:[[Image:First Order Response.png|350 px]]  (Full documentation of this unit operation can be found here: [[Slew Rate Controller]])

== [[Thermocompressor]] ==

[[Image:Thermocompressor 1.png]]  (Full documentation of this unit operation can be found here: [[Thermocompressor]])

*The new Thermocompressor is a form of steam ejector in which a flow of higher pressure primary steam is used to entrain lower pressure secondary steam. 
*The discharge stream is at an intermediate pressure between the high and low pressure steam flows. This potentially enables recovery of some of the energy in the low grade steam.
*The Thermocompressor model in SysCAD is based on data sheets from the Shutte and Koerting company.

== [[Underflow Washer]] ==

:[[Image:Underflow Washer.png|220px]] (Full documentation of this unit operation can be found here: [[Underflow Washer]])

The Underflow Washer is used to separate the solids from the liquids in the feed stream and  then wash the solids with a wash stream. This unit is similar to the [[Washer]] and the [[Counter Current Washer]].

* The user defines the percentage solids in both the underflow and the overflow from the unit.
* If there is insufficient solids in the feed to the Underflow Washer to satisfy both the under and over flow requirements, the unit will try to satisfy the underflow solids / liquids requirements first.
* The wash stream combines with the underflow solids and 'washes' the feed liquid out of the solid stream.
* The model allows the user to set sub-models in the Feed section, Underflow and Overflow sections.  The following sub-models are avaialble in each section:
** The Feed section, EB, allows the user to set Solubility, Reactions, Makeups, Environmental Heat Exchange and Evaporation;
** The Overflow section, OFEB, allows the user to set Solubility, Reactions, Environmental Heat Exchange and Evaporation; and
** The Underflow section, UFEB, allows the user to set Solubility and Reactions.
* The temperature of the solids and liquids is calculated after any reactions and/or heat loss has occurred.

= New SysCAD OLI Add-on =

Implemented new [[OLI Add-on|OLI add-on]] for SysCAD. OLI Systems provide leading Electrolyte Simulation Software. This SysCAD add-on requires an appropriate license from OLI Systems ([https://www.olisystems.com/ olisystems.com]) as well as requiring SysCAD "Heat Exchange" and "SMDK Runtime" add-ons. OLI in SysCAD is not implemented as a Species Properties Model but as unit models for use at appropriate locations in a plant model. Currently the following unit models using OLI are implemented:
* [[OLI Chemistry Model]] - Used to define and view various options for the selected OLI chemistry model, including management of mapping of SysCAD species list to species list used in OLI.
* [[OLI Sample Model]] - Stand alone unit model to perform side calculations using OLI for predicting aqueous chemistry equilibrium conditions and properties including pH.
* [[OLI Reactor]] - Include this model in a SysCAD stream to use OLI to calculate predicted outlet conditions. Functionality is similar to SysCAD [[Reaction Block (RB)|Reaction Block]] and [[Free Energy Minimisation (FEM)|FEM]] where for a given feed reactions occur with optional heat exchange. The model can be configured in a number of ways for different purposes.