Thermal Energy Storage Tank Calculation

The thermal storage usually consists of two salt storage tanks.

Thermal energy storage tank calculation.

To extend the steam generation beyond sunshine hours molten salt thermal energy storage is used. Thermal energy storage tes thermal energy storage commercialized over 30 years ago thousands of installations throughout the gcc world and the u s. The solar energy stored can be calculated as. Thermal energy storage technology the system essentially consists of a storage medium a tank a packaged chiller or built up refrigeration system and interconnecting piping pumps and controls.

Thermal energy storage tes is achieved with widely differing technologies depending on the specific technology it allows excess thermal energy to be stored and used hours days months later at scales ranging from the individual process building multiuser building district town or region. Thermal energy storage tank overview micah j. Usage examples are the balancing of energy demand between daytime and nighttime storing summer. Adaptable to almost any chilled water.

The annual billing cost savings are 907 231 and the simple payback time is 12 5 years. Above ground or underground tes tanks. In this case the closed loop with the heat transfer fluid is passed through one of the salt tanks where salt is heated to the temperature of 384 o c. A solar energy water buffer tank with 200 us gallons is heated 200 o f.

The ice storage tank is another option which generates ice on cooling coils. Thermal energy chilled water or hot water is produced during periods of off peak electrical demand or usage collected in a thermal energy storage tank then withdrawn and distributed to the facility during on peak periods. 1 btu british thermal unit 1055 06 j 107 6 kpm 2 92875x10 4 kwh 251 996 calorie it international table calorie 0 252 kcal 777 649. Million gallon tank has the shortest payback time and the projected total capital cost is within the budget.

Our most popular tank is the stratified water tank in which natural stratification separates the warm and cold water. Tes systems technology can be characterized by storage medium and storage technology. Example solar energy stored in a 200 us gallons water tank. Rouleau roman ellis 7 july 2015 chilled water tes an alternative to static ice introduction to thermal energy storage thermal energy storage tes chilled water typical storage medium water specific heat of 1 btu lb f sensible technology achieves capacity through high specific heat of water requires about 10 66 ft 3 water per ton hour at 20 degrees delta t.

Steel or concrete tes tanks. In this month s article we will go further into the calculations required for sizing as well as some design considerations and heat transfer media. In last month s article we described the rationale for using thermal energy storage tes to reduce peak electrical demand costs.