R-134a Refrigerant Tables Reference

• •Use the R-134a Refrigerant Tables Reference to check your hand calculations on homework or exam problems — comparing its result with your own working helps identify arithmetic errors before they propagate.
• •Use it during the early design phase to rapidly iterate on parameters and narrow down feasible configurations before committing time to detailed finite element simulations or full design packages.
• •Use it when reviewing a colleague's calculation or checking a vendor's data sheet for plausibility — a quick sanity check can prevent costly downstream errors.
• •Use it to generate reference data for a technical report or presentation without manual computation, ensuring consistent, reproducible numbers throughout the document.
• •Use it in the field when a quick estimate is needed and a full engineering software package is not available.

The R-134a Refrigerant Tables Reference is a precision engineering calculation tool designed for students, engineers, and technical professionals. Saturated and superheated R-134a property tables. Filter by temperature, select pressure for superheated region. All calculations are performed using established engineering formulas from the relevant scientific literature and standards. Follow the units printed beside each field. Where a unit selector is provided, the selected unit is converted internally. Results are computed in your browser without sending data to a server, which keeps your inputs private. This calculator is intended as a supplementary tool for learning and design exploration; always verify results against authoritative references for safety-critical applications.

R-134a reference tables tabulate the thermodynamic properties of 1,1,1,2-Tetrafluoroethane (R-134a), the dominant HFC refrigerant used in automotive air conditioning, domestic refrigeration, and medium-temperature commercial cooling systems. The tables include saturated liquid and vapor properties at discrete temperatures from approximately −40°C to near the critical point (101°C), as well as superheated vapor properties at various pressures and temperatures. R-134a replaced R-12 (CFC-12) after the Montreal Protocol phased out ozone-depleting chlorofluorocarbons in the 1990s. Key properties include saturation pressure P_sat, specific volume v_f and v_g, enthalpy h_f, h_g, and h_fg (latent heat of vaporization), and entropy s_f, s_g. The normal boiling point is −26.1°C at atmospheric pressure, making it unsuitable for low-temperature refrigeration but ideal for household refrigerator and automotive AC applications. R-134a has zero ozone depletion potential but a high global warming potential (GWP ≈ 1430), leading to regulatory pressure for replacement with lower-GWP alternatives like R-1234yf in new automotive systems. The tables are essential for vapor-compression refrigeration cycle analysis, component sizing, and system troubleshooting. Every value is computed from the Tillner-Roth and Baehr (1994) reference equation of state rather than typed in, with a selectable ASHRAE, IIR or NBP enthalpy reference.

• •Automotive AC system design: size compressors, condensers, and evaporators for vehicle air conditioning based on refrigerant property data at operating conditions.
• •Domestic refrigerator thermodynamic analysis: compute COP and cooling capacity from R-134a state-point properties at evaporator and condenser conditions.
• •Service and troubleshooting: compare measured operating pressures and temperatures against saturation data to diagnose low charge, restriction, or compressor issues.
• •Educational HVAC coursework: R-134a is the most commonly referenced refrigerant in undergraduate thermodynamics and refrigeration courses.
• •Retrofit and replacement analysis: compare R-134a performance to alternative refrigerants (R-1234yf, R-513A) for climate compliance planning.