Thermodynamics students and professional engineers frequently seek digital tools to streamline complex calculations. Computer Aided Thermodynamic Tables 3 (CATT3) is a widely recognized software program used to look up fluid properties and solve thermodynamic equations.
CATT3 was originally created as a supplementary software tool bundled via CD-ROM or digital access codes with Wiley textbooks (such as Fundamentals of Thermodynamics ).
Double-click the CATT-3.exe or CATT-3-x86-x64.exe file to begin installation. Follow the on-screen prompts.
CATT3 is generally distributed as a complimentary educational tool alongside specific engineering textbooks. It is not commercial software available on standard app stores. 1. Textbook Companion Disks and Access Codes computer aided thermodynamic tables 3 download free
Reference Fluid Thermodynamic and Transport Properties (REFPROP) is the gold standard in the engineering industry.
| Feature | Benefit | |---------|---------| | | Saves hours compared to manual table reading | | High accuracy | Uses fundamental equations of state (e.g., IAPWS-IF97 for water) | | Dual input flexibility | Works with temperature-pressure, pressure-entropy, or any pair of independent properties | | Quality calculation | Directly returns vapor quality for two-phase states | | Unit conversions | Supports SI and English units seamlessly | | Copy-paste outputs | Easy integration into homework, reports, or Excel | | No internet required | Once installed, runs offline (ideal for exams or field work) |
: It provides quick data for temperature, pressure, enthalpy, entropy, and specific volume. Double-click the CATT-3
CATT3 is a software package developed to provide a comprehensive database of thermodynamic properties for various substances, including pure compounds and mixtures. The software allows users to access and calculate thermodynamic properties, such as enthalpy, entropy, and specific heat capacity, at various temperatures and pressures. CATT3 is widely used in academia and industry for research, design, and simulation of thermodynamic systems.
| Feature | CATT3 (paid) | CoolProp (free) | NIST WebBook | |---------|--------------|----------------|--------------| | GUI | Excellent | None (library only) | Basic | | Substances | 40+ | 120+ | 80+ | | Offline use | Yes | Yes (install Python) | No | | Learning curve | Low | Moderate (scripting) | Low | | Unit conversion | Built-in | Manual | Built-in | | Cost | $40–$100 | $0 | $0 |
Students and engineers who want to automate their calculations. 2. NIST REFPROP (Paid) It is not commercial software available on standard
CATT3 acts as a digital reference library for thermodynamics. In engineering, calculating system efficiency requires knowing properties like enthalpy, entropy, and specific volume. Manual lookup tables require visual interpolation, which introduces human error. CATT3 automates this process. Core Capabilities
Solves complex multi-state cycle problems in seconds.
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Many engineering schools have site licenses for CATT3. If you are a student, check your department’s software portal, computer lab images, or ask your thermodynamics professor. Often, the software is pre-installed in labs, or you can download it using your student login.