Brief introduction of ice storage technology

Ice-storage air conditioning uses electricity to store ice in the ice storage device at night when the load is low, and releases the stored cold energy by melting ice during the day, which reduces the power load of air conditioning and the installed capacity of air conditioning system during peak hours of power grid. It represents the development direction of central air conditioning in the world today.

1. Load shedding and power load balancing.

2. Improve the efficiency of the generator set and reduce environmental pollution.

3. Reduce the installed capacity of the unit and save the electricity fee of air-conditioning users.

4. Improve the operation efficiency of refrigeration unit.

5. The cold storage air conditioning system is especially suitable for places where the load is concentrated and changes greatly, such as gymnasiums, theaters, concert halls, etc.

6. The application of cold storage air conditioning technology can expand the use area of air conditioning area.

7. Suitable for the environment where emergency equipment is located, such as computer room, military facilities, telephone room, inflammable and explosive goods warehouse, etc. (1) Save power.

(2) It saves the cost of power equipment and the trouble of using electricity.

(3) The efficiency of cold storage air conditioning is high.

(4) Save the cost of cold water equipment.

(5) Save the cost of air-conditioning box dumping equipment.

(6) Good dehumidification effect.

(7) When the power is cut off, the general generator can still keep the indoor air conditioner running.

(8) The cooling effect can be achieved quickly.

(9) Save the maintenance cost of air conditioners and electrical equipment.

(10) Reduce the noisy cold water flow and circulating air, that is, reduce the vibration and noise of water pumps and air conditioning units.

(1 1) Long service life. (1) For the ice storage system, its operating efficiency will decrease.

(2) The cost of refrigeration equipment and its occupied space increase.

(3) Increase the insulation cost of water pipes and air pipes.

(4) The coefficient of performance (COP) of refrigeration unit in ice storage air conditioning system will decrease. The working mode of the cold storage system refers to whether the system is charged with cold or supplied with cold, and whether the cold storage device and the refrigeration unit work independently or jointly during the cold supply. The cold storage system needs to operate in the specified mode to meet the requirements of cooling load. The common working modes are as follows:

(1) Ice making mode of the unit

(2) simultaneous ice making and refrigeration mode

(3) single refrigerator refrigeration mode

(4) Single melting and cooling mode

(5) Refrigerator and ice melting supply ice at the same time. Ice storage air conditioning ice maker is composed of ice hockey refrigeration, melting ice inside (outside) steel coil, ice slurry, ice core and other ice making methods.