# SPECIFIC HEAT CAPACITY OF WATER

Specific heat is the energy required to raise the temperature of a unit mass of a substance by one degree. In thermodynamics, there are two kinds of specific heats: Cv (specific heat at constant volume) and Cp (specific heat at constant pressure). Cv is the energy required to raise the temperature of a unit mass of a substance by one degree as the volume is held constant. Cp is the energy required to do the same as the pressure is held constant. The Cv and Cp are identical for incompressible substances.

### What is the unit for specific heat capacity?

Common units for specific heats are kJ/(kg · °C) or kJ/ (kg · K) and Btu/ (lbm · °F) .

### What is the Specific Heat of Water?

The specific heat capacity (cp) of water is 4182 J/kg°C at 20 °C (room temperature).

The water heat capacity calculator can be used to find the specific heat capacity of water (cp of water) at different temperatures.

### Specific Heat Capacity of Liquid Water Calculator:

 KNOWN PARAMETERS Parameter Value Unit Temperature °C K °F RESULTS Parameter Value Unit Specific Heat (cp) --- J/kg · K Btu/lbm·°F kJ/kg·K kJ/kg·°C Specific Heat (cp)* --- * Specific Heat (cp)** --- **

Note: Use dot "." as decimal separator.

Note *: First order polynomial interpolation (Linear interpolation) result for temperature not tabulated below

Note **: Second order polynomial interpolation result for temperature not tabulated below

Note: The unit kJ/kg·°C for specific heat is equivalent to kJ/kg·K

### Specific Heat (Heat Capacity) Table for Saturated Liquid Water at Different Temperatures:

 Specific Heats for Saturated Liquid Water Temperature Saturation Pressure Specific Heat (cp) K bar kJ / kg-K 273.15 0.00611 4.217 275 0.00697 4.211 280 0.00990 4.198 285 0.01387 4.189 290 0.01917 4.184 295 0.02617 4.181 300 0.03531 4.179 305 0.04712 4.178 310 0.06221 4.178 315 0.08132 4.179 320 0.1053 4.180 325 0.1351 4.182 330 0.1719 4.184 335 0.2167 4.186 340 0.2713 4.188 345 0.3372 4.191 350 0.4163 4.195 355 0.5100 4.199 360 0.6209 4.203 365 0.7514 4.209 370 0.9040 4.214 373.15 1.0133 4.217 375 1.0815 4.220 380 1.2869 4.226 385 1.5233 4.232 390 1.794 4.239 400 2.455 4.256 410 3.302 4.278 420 4.370 4.302 430 5.699 4.331 440 7.333 4.36 450 9.319 4.40 460 11.71 4.44 470 14.55 4.48 480 17.90 4.53 490 21.83 4.59 500 26.40 4.66 510 31.66 4.74 520 37.70 4.84 530 44.58 4.95 540 52.38 5.08 550 61.19 5.24 560 71.08 5.43 570 82.16 5.68 580 94.51 6.00 590 108.3 6.41 600 123.5 7.00 610 137.3 7.85 620 159.1 9.35 625 169.1 10.6 630 179.7 12.6 635 190.9 16.4 640 202.7 26 645 215.2 90 647.3Note1 221.2 ∞

Note 1: Critical Temperature

Note: The specific heat values listed above can be used at any pressure with negligible error except at temperatures near the critical-point value.

### List of Equations:

 Parameter Formula First order polynomial interpolation Cp(T)=a0 + a1T Second order polynomial interpolation Cp(T)=a0 + a1T + a2T2