The standard Fafco PCP10 ice storage system is an internal melted ice accumulator that moves from solid to liquid at a temperature of 10 degrees Celsius. In fact, a liquid with a melting point at 10oC is used in place of water.
The charge and discharge are carried out in the same way as in a conventional UW battery.
As with the conventional UW battery, discharge time can be reduced, thanks to Fafco’s exclusive “High Power” system.
Some applications that require ice storage have cold requirements in excess of 10 degrees Celsius. Refrigeration machines have a better COP by working at 10 degrees Celsius than at 0 degrees Celsius, so it’s more economical, in these specific cases, to have storage at 10 degrees Celsius. There are many other advantages to this system as well.
- Less thermal loss.
- Make ice without going down in too low temperatures.
- Use of smaller chillers (economic gain, COP gain)
- Flammable, inert and stable material.
- Not corrosive.
The chiller used a water chiller. Since the liquid/solid phase change takes place at a temperature of 10 degrees Celsius, water can be used in the interchanges at a temperature of 6 degrees Celsius. The charge usually takes place at night when electricity rates are cheaper, and cold demand is lower.
In this case, only the chiller is responsible for managing cooling requests. This discharge mode is used when demand is low and there is no need to clip peaks. The temperatures produced by the chiller are between 6 and 7 degrees Celsius, so they can be coupled with the traditional HVAC system on the user side.
In this mode, only ICEBAT is in charge of meeting demand. It benefits when you reach peak demand and at times when electricity rates are high.