What is the function of the liquid reservoir in a liquid cooling system?

The function of the liquid reservoir in a liquid cooling system is primarily to hold all liquid as it expands and contracts. As the coolant circulates through the system, it absorbs heat from the CPU and other components. This results in a change in temperature and volume of the coolant. The reservoir allows for the accommodation of this expanding liquid, preventing pressure build-up and ensuring that the cooling system operates efficiently and safely.

This reservoir is also vital for maintaining the proper level of coolant in the system and providing a place to add more liquid if necessary. While other components, such as the pump and radiator, contribute to the overall cooling mechanism, the reservoir specifically addresses the need to manage and contain the liquid as it undergoes thermal changes.