Thermal Energy Storage Tank (TES Tank)
The THERMAL ENERGY STORAGE (TES) tank is a naturally stratified thermal accumulator that allows the storage of chilled water produced during off-peak periods. A TES tank reduces the operational cost and the required capacity of cooling plants, increasing the efficiency of the cooling plant and reducing the capital cost.
The Stratified Thermal Energy Storage (TES) tank is a widely proven technology that collects excess process thermal energy to be used during load peak hours. By producing chilled water in the evening and using it during daily peak hours there are several advantages. ARANER’S thermal storage tanks provide a tailor-made solution in the fields of refrigeration, cooling and heating.
Save your excess, use it on demand
The TES technology, in combination with TIAC solutions and District Energy plants, allows for a reduction in operation costs and refrigerant plant capacity requirements. ARANER provides and designs Ice storage, Stratified water storage and Salt storage. Our in-house technology provides state-of-the-art thermal storage systems, resulting in better performance and reduced charging times.
Up to now, ARANER has supplied design and consultancy for more than 60 Thermal Energy Storage Systems and is responsible for the design and implementation of the world’s largest Thermal Energy Storage System. Araner has developed several engineered solutions for Oil & Gas, Pharmaceutical, Food & Beverage Markets.
ARANER THERMAL STORAGE SYSTEMS
In a naturally stratified chilled-water storage tank, cool and warm volumes of water are stored together without a physical barrier. A stable density gradient prevents mixing of the two volumes. The stable gradient is maintained during storage and operation by varying the direction of flow throughout the tank.
Typically, there will be a 0.4 to 0.6m thick thermocline (a region with vertical temperature and density gradients) making a separation between the cold and the hot water. In charging and discharging mode, the cool water is introduced and withdrawn at the bottom of the tank while warm water is introduced and withdrawn at the top diffuser.
The ARANER-designed diffuser systems help to preserve stratification by minimizing the disturbance caused by inlet and outlet flows, supported by extensive CFD studies and R&D of new diffusers.
Ice generator accumulates energy by generating ice. The tank includes an evaporator located in the upper position, a storage tank in the lower position and two pumps, one for charging period and another one for discharging period.
During the charging period, water freezes in the cooling coils of the ice generation. Some of this water drops into the tank still in liquid form , and the rest remains in the cooling coils, working as a condenser.
In the discharging period, chilled water pump starts working, pumping the cold water from the bottom of the tank and making it circulate through the cooling coils of the load, where it is heated. After this, it will pass through the cooling coils of the ice generator again. With this temperature, the ice generator is not able to deliver the water as ice to the tank, so here it is delivered as cold water.
Cool Salt Storage applications use a mixture of inorganic salts, water and nucleating and stabilizing agents, which melts and freezes around 8.3°.
Salt Storage Tanks can use conventional chillers and water temperature and have high cooling capacity per cubic foot.
Thermal Energy Storage benefits
Thermal Energy Storage Tanks are beneficial for a cooling plant with variable demand between day and night which is the typical case of District Energy plants. TES Tank is also advisable when Turbine Inlet Air Cooling systems are designed for peak demand.
The TES tank reduces capital and operational cost. ARANER designs, manufactures and installs state-of-the-art thermal energy solutions. We provide tailor-made systems that help our clients achieve the expected results in power augmentation and energy efficiency.
Your Thermal Storage Project with ARANER
- Comprehensive energy solutions adapted to client specifications
- Maximum efficiency in simultaneous chilled water production and consumption
- Smaller refrigeration equipment sizes and costs, as they are designed for average loads and not for peaks
- Storage of thermal energy and transformation to electrical energy, with turbine inlet air cooling technology
- Thermal energy production stored during low-cost electricity periods
- Available option of water or ice storage
TES case study
Farah Hospital, located in Amman (Jordan) is one of the biggest hospitals in the Middle East. In 2012 they started the construction of an extension and were looking for cooling and heating technologies to help them reduce their fuel oil and electricity expenses.
ARANER’s TES solution helped Farah Hospital to reduce the energy cost in up to 416,000 USD per year. Download this case study for free and learn all the details about this project.
Continue reading in our blog
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- Thermal Energy Storage Tank in District Energy SystemsThermal Energy Storage is a technology commonly used in District Energy Systems due to its multiple benefits. The main benefit is the reduction of the District Energy Plant, as the [...]Read more
ARANER energy solutions
ARANER is an Engineering Group specialized in tailor-made solutions in the fields of Refrigeration, Cooling and Heating. We take full responsibility of the overall project, including design, engineering, manufacturing, procurement of equipment and construction management.
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