Cold Storage System-Guolian Green Technology(Wuxi) Joint Stock Co., Ltd.

Cold Storage System

The cold storing A/C system refers to an A/C system that is able to accumulate the cooling capacity in a certain medium in the form of sensible heat and latent heat, and releases the cooling capacity as needed. The most commonly used cold storing methods include ice storage and water storage.

Ice Storage

Ice storage A/C technology refers to ice making using electricity and storage of the ice in the ice storing device during the low power consumption valley hours and utilization of the cooling capacity when needed (during peak hours). This way, the peak load shifting of power grid is realized. It helps to lower the installed power-generating capacity and sustain high-efficiency and safe operation of the power grid.
The control system of ice storage project is complicated. It involves start and stop of the equipment, and control of conversion of working conditions of chiller and adjustment of the cooling capacity by melting ice. It requires reliable and optimal control, so as to utilize the ice storing system as much as possible, thus saving operation expense to the maximum extent. The control system is mainly composed of the central management workstation, communication system, onsite controller, analog signal conversion interface, valve, sensor, controls and actuator.

The ice storage air-conditioning system has the following advantages:
It reduces operation expense of A/C system.
The distribution capacity of chilling unit is lower than the traditional A/C system. The cooling tower, water pump and power transmission and transformation system of the A/C system has accordingly lower capacity.
By adding ice storage equipment to certain traditional A/C systems, the cooling capacity can be increased by 30% to 50%.
It can be used as stable cold source and is able to improve operation reliability of the A/C system.
The chilling equipment is mostly operating at full load. The number of times of stop/start is reduced and service life is prolonged.
Peak load shifting is realized, thus improving the operation stability and economy of the power grid and reducing the installed power-generating capacity.

Water Storage

It can be used in combination with traditional systems. The water temperature is 3 to 7℃. The fire pool of the large-scale buildings cal be used for cooling capacity storage.