Thermal Energy Storage

'Stratified Chilled Water Thermal Energy Storage System’, is our special focus product befitting the applications stated above, be it industrial or commercial. Stratified CHW TES utilizes the sensible heat of water for storing the cooling energy in a chilled water storage tank and discharges the stored coldness for air-conditioning during power outage or as and when load shifting is required in district cooling plants.

The key technology of CHW Storage system is the radial diffuser design which ensures thermal stratification of chilled water and warm water by density difference. It is our state-of-the-art technology which is recommended in ASHRAE’s Design Guide for Cool Thermal Storage Systems.

‘In Ice Based Thermal Energy Storage System’, the storage tank is filled with ice balls which are almost filled with water. The tank is partially filled with glycol plus water mixture (brine solution). For charging the storage, the chillers deliver water glycol at – 5°C, and the water inside the ice balls freeze. The heat transfer medium is pumped to the upper pipes of the tank and flows by gravity from the top to the bottom. During the storage discharge, the medium flows from the bottom of the tank to cool the users and comes back warm at the top of the tank where it is cooled again by contact with the ice balls, melting the ice inside.