DWSIM Simulator vs ChemE Calculator

DWSIM Simulator is a Steady-State Chemical Process Simulator, featuring: - Offline functionality: no need to connect to online databases or servers, DWSIM runs completely offline on your device, wherever you are! - Touch-enabled Process Flowsheet Diagram (PFD) Drawing Interface: A hardware-accelerated PFD interface with touch support allows Chemical Engineers to build complex process models in a few minutes - VLE/VLLE/SVLE/SVLLE calculations using Equation of State and Activity Coefficient models: calculate fluid properties and phase distribution with advanced thermodynamic models - Compound database with extensive data for more than 1500 compounds - Rigorous Thermodynamic Models*: PC-SAFT EOS, GERG-2008 EOS, Peng-Robinson EOS, Soave-Redlich-Kwong EOS, Lee-Kesler-Plöcker, Chao-Seader, Modified UNIFAC (Dortmund), UNIQUAC, NRTL, Wilson, Raoult's Law and IAPWS-IF97 Steam Tables - Thermophysical state (phase) properties: Enthalpy, Entropy, Internal Energy, Gibbs and Helmholtz Free Energies, Compressibility Factor, Isothermal Compressibility, Bulk Modulus, Speed of Sound, Joule-Thomson Expansion Coefficient, Density, Molecular Weight, Heat Capacity, Thermal Conductivity and Viscosity - Single-compound properties: Critical Parameters, Acentric Factor, Chemical formula, Structure formula, CAS Registry Number, Boiling Point Temperature, Vapor Pressure, Heat of Vaporization, Ideal gas Enthalpy, Ideal gas Enthalpy of Formation at 25 C, Ideal Gas Gibbs Free Energy of Formation at 25 C, Ideal Gas Entropy, Heat Capacity Cp, Ideal Gas Heat Capacity, Liquid Heat Capacity, Solid Heat Capacity, Heat Capacity Cv, Liquid Viscosity, Vapor Viscosity, Liquid Thermal Conductivity, Vapor Thermal Conductivity, Solid Density, Liquid Density and Molecular Weight - Comprehensive Unit Operation Model set*, including Mixer, Splitter, Separator, Pump, Compressor, Expander, Heater, Cooler, Valve, Shortcut Column, Heat Exchanger, Component Separator, Pipe Segment, Rigorous Distillation and Absorption Columns, Wind Turbine, Hydroelectric Turbine, Water Electrolyzer and Solar Panel - Support for Chemical Reactions and Reactors*: DWSIM features support for Conversion, Equilibrium and Kinetic reactions, together with their respective Reactor models - Flowsheet Parametric Studies: Use the Sensitivity Analysis Tool to run automated parametric studies on your process model; The Flowsheet Optimizer tool can bring the simulation to an optimum state according to user-defined criteria; The Calculator tool can read flowsheet variables, perform math operations on them and write the results back to the flowsheet - Petroleum Characterization: Bulk C7+ and TBP Distillation Curve characterization tools enable creation of pseudocompounds to simulate petroleum processing facilities - Parallel multicore CPU calculation engine: a fast and reliable flowsheet solver that takes advantage of the multicore CPUs on modern mobile devices - Save/Load XML simulation files on the device or in the cloud - Export simulation results to PDF and Text documents * Some items are available through in-app purchases ABOUT CHEMICAL PROCESS SIMULATION Chemical Process Simulation is a model-based representation of chemical, physical, biological, and other technical processes and unit operations in software. Basic prerequisites are a thorough knowledge of chemical and physical properties of pure components and mixtures, of reactions, and of mathematical models which, in combination, allow the calculation of a process in a computing device. Process simulation software describes processes in flow diagrams where unit operations are positioned and connected by product or educt streams. The software has to solve the mass and energy balance to find a stable operating point. The goal of a process simulation is to find optimal conditions for a process.

ChemE Calculator is a powerful tool with a simple interface for running VLE and steam table calculations on your iPhone or iPad, or for doing unit conversions. Ever been working a problem with your colleague, the path to real answers illuminated before you, when suddenly you need to do a quick dewpoint calc or check the heavies content in a vapor phase? How about working a startup and needed to know how much duty your steam turbine can achieve with a lower pressure source? Ever been in a meeting with the VP who's asking for sources of product loss and find yourself wishing you included the composition for the knockout drum bottoms stream in your slides? Need to look up the structure and molecular weight of beta-carotene or any other compound? Instead of leaving the productive groove to go back to your desk, log into your computer, creak open the process simulation software, define the simulation, run the simulation and then sift through reams of output to get your answer, now you can reach into your pocket and run a few quick cases on your iPhone or iPad! Its tabular user interface draws upon the familiar look and feel of iOS. To help you get off the ground, press the circled "i" icon at the top right corner of the screen to access helpful view-specific information. When you're done with your calc, you can email the results to yourself or anyone else! The calculation tools available in this release are: - Flash VLE - Bubble P - Dew P - Bubble T - Dew T - Generalized steam tables - Saturated vapor/liquid steam tables - Wet steam properties - Subcooled liquid steam tables - Superheated vapor steam tables - Supercritical fluid steam tables - Unit Conversion - Chemical Database Search (PubChem) There are also pictures of kittens in case you need a little break. Units for different types of input can be selected and changed when defining feed properties, and concentrations can be entered as either mole fraction or mass fraction. Multicomponent mixtures are rigorously modeled with the Peng-Robinson equation of state, but rapid convergence is facilitated by lean graphics and an optimized backend that starts crunching numbers as soon as you hit the button. The current version includes data for 47 different components: 45 hydrocarbons (C1-C10) plus acetonitrile and N,N-dimethylformamide. Binary interaction parameters are included for 57 selected pairs. Steam table calculations use the IAPWS-IF97 equations, representing the most up-to-date steam thermodynamics model available today. Output data can be provided in either metric or US units based on your preference. After running your calcs, you can email the results to the address of your choice. Emails contain input data as well as calculation results, and are transmitted in simple HTML format for readability, compatibility and ease of reference. Or, you can just share your favorite kitten picture with friends.