Thermal energy storage (TES) is temporary storage of heat or cold for use at a later time. It bridges the gap between supply and demand of energy. Thermal energy storage systems with Phase Change Materials are suitable for short (24h) and medium-term energy storage of up to one week. For most applications, Phase Change Materials must be packaged in well-sealed containers. Global-E-Systems has developed several standard types of PCM balls suitable for various applications.
The GAIA PCM Energy Storage Ball is an encapsulation of Phase Change Materials in a spherical shape with a diameter of 63, 80, 100mm or 125mm Ø. For low temperature PCM applications the balls are manufactured from high-grade HDPE. For high temperature PCM applications we developed special stainless steel balls. The PCM balls can easily be applied separately in a buffer tank for a heating or cooling circuit. This allows for any required increase (in capacity) or decrease (in volume) of the storage system. PCM balls are specifically selected for each project to have the proper material and phase change temperature.
For biomass power plants, a well-dimensioned buffer tank is vital. The disadvantage of these buffer tanks, however, is their size and the amount of space they occupy. In addition, the aesthetic aspect plays a major role. Buffer tanks placed outside do not look attractive and could even be an obstacle when trying to obtain a building permit. In these cases, Phase Change Material balls can offer a solution. When Phase Change Materials are applied, the volume can be reduced by a factor of 4. In the image, the planned 60,000 litre buffer tank has been replaced by 2 PCM buffer tanks with a capacity of 10,000 litres. Both tanks are filled with a total of 50,000 PCM80 balls.
» Buffer storage systems for thermal solar energy.
» The storage volume can be decreased by a factor of 3-4 at equal storage capacity.
» Buffer storage for heat pumps and cold-water machines.
» Cold / heat storage for peak shaving in the (process) industry.
» PCM balls can be stacked in an air duct (rectangular or round) or simply added separately.
» Preheating of air-water heat pumps. Loading during the day cycle, better COP during operation at night.
» For area cooling. Can be pre-loaded with cold night air.
» Housing. For example, in a series connection with the HR-WTW.
» Using PCM balls as active storage medium in building materials (concrete, for instance).
|Storage material||Optional salt hydrates (heat) or eutectic solution (cold), for instance water / glycol Fire classification DIN EN 13501-1 (non-flammable)|
|Heat storage capacity:||Capacity per ball: 40kJ / 11Wh, |
for example for PCM58 capacity per m3: 28,5 kWh
|Process temperatures||Applicable from -30°C to +89°C|
|Specifications||Diameter: 80 mm (Also available in 100 and 125mm)|
Weight: 200 - 400 gram (depending on specific mass of the PCM)
Filling volume: 180 mL
Total weight per m3: 540 - 765 kg (depending on specific mass of the PCM)
Quantity per m3 1950 pieces
|Container||Made of High Density Polyethylene, Polypropylene or stainless steel in a spherical shape with high heat stability. An optimised exchange surface for excellent energy transfer.|
|Max. installation pressure||3 bar|
|Product||Type PCM||Latente warmte||Smelt temperatuur||Stol temperatuur|
|GAIA OM PCM7||Organic||180 kJ/kg||7°C||6°C|
|GAIA OM PCM14||Organic||208 kJ/kg||14,5°C||13°C|
|GAIA HS PCM18||Inorganic||170 kJ/kg||18.5°C||17.5°C|
|GAIA HS PCM24||Inorganic||158 kJ/kg||24°C||22°C|
|GAIA HS PCM29||Inorganic||188 kJ/kg||29°C||27°C|
|GAIA HS PCM36||Inorganic||202 kJ/kg||36°C||34°C|
|GAIA HS PCM48||Inorganic||206 kJ/kg||48,7°C||45°C|
|GAIA HS PCM58||Inorganic||226 kJ/kg||58°C||52°C|
|GAIA HS PCM64||Inorganic||218 kJ/kg||64°C||61°C|
|GAIA HS PCM78||Inorganic||260 kJ/kg||78°C||75°C|
|GAIA HS PCM89||Inorganic||149 kJ/kg||89.3°C||84°C|