Energy Density Calculator:
Enter the values of total energy, E(J) and total volume, V(m3) to determine the value of Energy density, Ed(J/m3).
Energy Density Formula:
Energy density (Ed) refers to the amount of energy stored per unit volume in a system. It’s measured in Joules per cubic meter. A higher energy density signifies more energy packed into a smaller space.
Higher energy density implies that more energy can be stored or transported within a smaller volume, which is crucial for applications where space and weight are limited, such as in electric vehicles or portable electronics.
A system with a higher total energy content will have a higher energy density if its volume remains constant.
If we compress a system (reduce its volume) while keeping the total energy constant, the energy density will increase.
Imagine a battery pack. The energy density of this battery pack will determine how much energy it can store and supply, influencing its size and weight for a given energy capacity.
Energy density, Ed(J/m3) in joules per cubic metres is calculated by dividing the total energy, E(J) in joules by total volume, V(m3) in cubic metres.
Energy density, Ed(J/m3) = E(J) / V(m3)
Ed(J/m3) = energy density in joules per cubic metres, J/m3.
E(J) = total energy in joules, J.
V(m3) = total volume in cubic metres, m3.
Energy Density Calculation:
- A fuel cell stores 500 joules of energy in a volume of 0.25 cubic meters. What is the energy density of the fuel cell?
Given: E(J) = 500J, V(m3) = 0.25 m3.
Energy density, Ed(J/m3) = E(J) / V(m3)
Ed(J/m3) = 500 / 0.25
Ed(J/m3) = 2000J/m3.
- A battery has an energy density of 400 J/m³ and stores a total energy of 1600 joules. What is the volume of the battery?
Given: E(J) = 1600J, Ed(J/m3) = 400J/m3.
Energy density, Ed(J/m3) = E(J) / V(m3)
V(m3) = E(J) / Ed(J/m3)
V(m3) = 1600 / 400
V(m3) = 4m3.