Energy storage system water cooling

What is thermal energy storage?

Author to whom correspondence should be addressed. Thermal energy storage (TES) is a technology that stocks thermal energy by heating or cooling a storage medium so that the stored energy can be used at a later time for heating and cooling applications and power generation. TES systems are used particularly in buildings and in industrial processes.

Why is water used as cold energy storage material in data centers?

Water is generally used as cold energy storage material in data centers, because of its low price, high specific heat capacity and no pollution or corrosion . LTES stores thermal energy when the storage materials undergo a phase change process from one physical state to another.

What type of cooling system is used in a water aquifer?

The cooling system mainly consisted of dry cooler, ground source HX, standby conditioner and TES, in which the ground source HX was also TES for seasonal thermal energy storage. Aquifer thermal energy storage was combined with air-cooled conditioner, to provide chilled water together with air-cooled conditioner.

What is cool thermal energy storage (CTEs)?

Cool thermal energy storage (CTES) has recently attracted interest for its industrial refrigeration applications, such as process cooling, food preservation, and building air-conditioning systems. PCMs and their thermal properties suitable for air-conditioning applications can be found in [ 76 ].

How does a water storage system work?

Energy is added to or removed from the store by pumping water into or out of the storage unit. The major difference will be in the mechanisms for heat loss and the possible thermal coupling with the ground. These storage options are technically feasible, but applications are limited because of the high investment costs.

What type of cooling system is used in data center servers?

As shown in Fig. 22, liquid cooling was used in data center servers, and the cooling system outside the racks consisted of heat exchanger, cold energy storage system, electrical chiller and a cooling tower. Multiple operating modes were achieved.