How to Calculate the Amount of Heat Transferred

A hot bath requires a large energy transfer.
••• Jupiterimages/Photos.com/Getty Images

People detect the transfer of heat, naturally, by noting changes in temperature. Yet heat and temperature measure different things. Heat measures energy. Temperature instead describes the average energy throughout the particles of a substance, which all vibrate with kinetic energy. A hot skillet therefore feels hotter than a heated bath because of its higher temperature, but it takes a higher energy transfer to heat the tub of water. Calculate energy transfer using temperature change and the substance's capacity for heat.

    Determine the substance's temperature rise. If a quantity of water, for instance, rises from 20 degrees Celsius to 41 degrees: 41 - 20 = 21 degrees.

    Multiply the result by the substance's mass. If 200kg of water, for instance, raises 21 degrees in temperature: 21 x 200 = 4,200.

    Multiply this product by the substance's specific heat capacity. With this example, which uses water, whose specific heat capacity equals 4.186 joules per gram: 4,200 x 4.186 = 17,581.2, or approximately 17,500 joules. This is the amount of energy that is transfered during the heating process.

Related Articles

How to Calculate Heat of Sublimation
What Happens When Ice Is Added to Hot Water and How...
How to Convert Joules to Kelvin
How to Calculate Entropy Change
How to Find the Number of Representative Particles...
How to Mix Calcium Chloride and Water
Gallons to Kilograms Conversion
How to Calculate E = MC2
How to Calculate the Amount of Heat Released
How to Calculate Mole Percent
Why Is Water Good to Use in a Calorimeter?
How to Calculate BTU for Heat
How to Convert Wattage to Degrees
How to Convert From BTU to Fahrenheit
How to Calculate Heat Absorbed by the Solution
How to Convert Gallons, Quarts, Pints and Cups
How to Increase the Density of Water
How to Convert Metric Tons to Cubic Yards
How to Convert CMH to BTU
How to Convert Joules to Grams

Dont Go!

We Have More Great Sciencing Articles!