# How can I calculate the power needed to increase/decrease the temperature of an object by x degrees when using a Peltier module?

I am working on a cooling system using 4 Peltier modules. I would like to somehow determine the power I need to reduce the temperature of the object attached to the Peltier module by x degrees Celsius. I would like to compare this data with the amount of energy I need to cool the system. The data that I currently have are: Qmax, delta Tmax, Imax, Vmax, and module resistance. Are there any formulas that I can use to find out the power needed to run the Peltier module to reduce the temperature by x degrees?

• How much heat power is flowing into the item you wish to cool? Commented Sep 20, 2021 at 11:06
• You need to know the mass of the object and the effective specific heat of the material. Are you heating/cooling a teaspoon of water or a gallon of oil? To move a degree will not take the same amount of energy. Commented Sep 20, 2021 at 15:58
• Are you asking about energy needed to cool something x degrees, or the power needed to keep it there? Or maybe the power needed to cool in a certain amount of time?
– Matt
Commented Sep 20, 2021 at 16:40