How to calculate the amount of energy stored in containers

The following energy storescan be calculatedfrom other quantities: Thermal Energy= (Mass) x (Specific Heat Capacity) x (Change in Temperature) Elastic Potential Energy= 0.5 x (Spring Constant) x (Extension)2 Kinetic Energy= 0.5 x (Mass) x (Speed)2 Gravitational Potential Energy= (Mass) x (gravitational field strength) x (change in height)

Energy stored as sensible heat in different types of materials. Thermal energy can be stored as sensible heat in a material by raising its temperature. The heat or energy storage can be calculated as Heat is stored in 2 m3 granite by heating it from 20 oC to 40 oC. The denisty of granite is 2400 kg/m3 and the specific heat of granite is 790 J/kgoC.

The thermal heat energy stored in the granite can be calculated as q = (2 m3) (2400 kg/m3) (790 J/kgoC) ( (40 oC) - (20 oC)) = 75840 kJ qkWh= (75840 kJ) / (3600 s/h) =21 kWh The heat required to to heat 1 pound of water by 1 degree Fahrenheit when specific heat of water is 1.0 Btu/lboF can be calculated as q = (1 lb) (1.0 Btu/lboF) (1 oF) = 1 Btu

Energy density - by weight and volume - for some ways to store energy Densities of minerals. Specific gravities for minerals and other materials. Melting points and latent energy of salt hydrates. Common solids - like brick, cement, glass and many more - and their specific heats - in Imperial and SI units.