ARESCO is a leading manufacturer of Design and construction of Thermal Energy Storage (TSE) Tanks that meet the requirements of API 650, AWWA and ASHRAE Standard;
TES Tanks utilized for storing cold water for the District Cooling Plants (DCP) in residential buildings, commercial buildings, Airports, etc.
Thermal Energy Storage (TES) has two operational phases: charging and discharging. During the discharge phase, the warmer, less dense returning water floats on top of the stored chilled water. The water from storage is supplied and withdrawn in low velocity, in essentially horizontal flow, so that buoyancy forces dominate inertial effects. When the stratified storage tank is charging, chilled supply water enters through the diffuser at the bottom of the tank, and return water exits to the chiller unit through the diffuser at the top of the tank. There will be a thermocline (a region with vertical temperature and density gradients) making a separation between the cold and the hot water. The thermocline prevents further mixing of the water above it with the water beneath it. The thermocline rises as recharging continues and subsequently falls during discharging. It thickens a little during charging and discharging due to heat conduction through the water and heat transfer to and from the walls of the tank. Inlet and outlet streams will be kept at sufficiently low velocities, so that buoyancy forces predominate over inertia forces in order to produce a gravity current (density current) across the bottom or top of the tank.