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Fluid Properties Calculator

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Browser-based fluid properties and psychrometric tools for engineers.

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R134a
PT linkage: edit P ↔ Tsat. ΔT sets superheat/subcool. Set ΔT=0 to adjust Q.
P–T (Two-phase)
Pressure
P_abs
Temperature
T
T
=
Tsat
+
ΔT
SH
Enthalpy
H
Entropy
S
Density
ρ
Vapor Quality
Q
0–1

Properties

Two-Phase
R134a @ 0.1 MPa / -26.36 °C
Specific Heat (Cp)1.280kJ/kg·K
Specific Heat (Cv)0.848kJ/kg·K
Speed of Sound743.306m/s
Viscosity380.272μPa·s
Thermal Conductivity104.042mW/m·K
Prandtl Number (Pr)4.678-
Derived (computed)
Derived by FluidTool from the properties above (not a direct CoolProp output).
Kinematic Viscosity (ν)0.276mm²/s
Thermal Diffusivity (α)0.059mm²/s
Heat Capacity Ratio (Cp/Cv)1.510-
Learn
Practical notes to help you interpret results and common HVAC workflows.
P-h DiagramSuperheat & SubcoolingTwo-phase quality (Q)Saturation pressure vs temperatureView all Wiki topics
Chart
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P-h Diagram R134a