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.

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

The water heat capacity calculator below can be used to find the specific heat capacity of water at given temperature.

Specific Heat Capacity of Liquid Water Calculator:

KNOWN PARAMETERS
Parameter Value Unit
Temperature
RESULTS
Parameter Value Unit
Specific Heat (cp) ---
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:

Specific Heats for Saturated Liquid Water
Temp. Saturation Press. 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

Reference: