Specific Heat Of Water At Room Temperature

Specific heat of water.

Specific heat of water at room temperature.

The specific heat capacity c p of liquid water at room temperature and pressure is approximately 4 2 j g c. Water specific gravity figures and tables showing specific gravity of liquid water in the range of 32 to 700 f or 0 to 370 c using water density at four different temperatures as reference water specific heat online calculator figures and tables showing specific heat of liquid water at constant volume or constant pressure at. Specific heat c is the amount of heat required to change the temperature of a mass unit of a substance by one degree. For conversion of units use the specific heat online unit converter.

Generally the most constant parameter is notably the volumetric heat capacity at least for solids which is notably around the value of 3 megajoule per cubic meter and kelvin. For example at a temperature of 25 c the specific heat capacity can vary with the temperature the heat required to raise the temperature of 1 kg of water by 1 k equivalent to 1 c is 4 179 6 joules meaning that the specific heat of water is 4 179 6 j kg 1 k 1. For liquid at room temperature and pressure the value of specific heat capacity cp is approximately 4 2 j g c. The specific heat specific heat capacity at constant pressure and constant volume processes and the ratio of specific heats and individual gas constants r for some commonly used ideal gases are in the table below approximate values at 68 o f 20 o c and 14 7 psia 1 atm.

This implies that it takes 4 2 joules of energy to raise 1 gram of water by 1 degree celsius. The specific heat capacity of a substance is the quantity of heat energy required to raise the temperature of 1 kg of the substance by 1 c the symbol used for specific heat capacity is c and the units are j kg c or j kg k. Water has a specific heat capacity of 4182 j kg c. When calculating mass and volume flow in a water heating systems at higher temperature the specific heat should be corrected according the figures and tables below.

When calculating mass and volume flow of a substance in heated or cooled systems with high accuracy the specific heat heat capacity should be corrected according values in the table below. Specific heat of water vapor h 2 o at temperatures ranging 175 6000 k. Because water is such an important and common substance we even have a special way to identify the amount of energy it takes to raise one gram of water by one degree. The specific heat c p and c v will vary with temperature.

The following table of specific heat capacities gives the volumetric heat capacity as well as the specific heat capacity of some substances and engineering materials and when applicable the molar heat capacity. Some typical values of specific heat capacity for the. This value for cp is actually quite large. Note that these units may also be written as j kg 1 c 1 or j kg 1 k 1.