Equipment & Trading

Total Freeze Ice Tank

Fundamental Of Ice Storage System

When water is solidified into ice, the heat stored is called “heat of solidification”. The solidification heat is 79 Kcal/Kg ( 1 Kg of 0℃ water to be solidified into 0℃ ice ) . Usually, the required temperature of cooling water used for air conditioning is less than 15℃. It means that 94 Kcal/Kg of energy would be available when 1 Kg of 15℃ water is solidified into 0℃ ice.

The principle of ice storage system is to utilize the off-peak hours to operate the chiller to make ice. The cooling capacity stored in ice then can be applied for cooling instead of operating chiller during peak hour to avoid the higher energy cost.

Function Of Ice Storage System

  • Shift peak-hour energy consumption
  • Cost saving on the demand charge and the initial cost of power receiving system
  • Save on running cost
  • Reduction of chiller capacity
  • Higher running efficiency
  • Capability of extension
  • Low temperature cooling water supply

Ice Storage Cooling System

During off-peak hours, when electricity tariff is at it's cheapest, the brine chiller and the brine water pump operate to keep the liquid at a low temperature between -2℃ to -5℃ combined with colder night air, ice can be formed at the cheapest. Refer to "Blue" process line. This liquid is stored in the ice storage tank. When using air conditioner during day-time, only the ice-storage tank & chilled water pump is used. Refer to "Red" process line, hence, this would save considerable electricity bills in long term operation.


For full specification, download PDF here.