Ice Storage Air Conditioning System Composition
What is an ice storage air conditioner?
The ice-storage air-conditioning system uses an electric refrigerator for cooling during the low power consumption period at night when the power load is very low, and the cold energy is stored in the form of ice. During the daytime when the power load is high, that is, the peak power consumption period, the stored cooling energy is released to meet the demand of the building's air conditioning load. At the same time, in the spring and autumn when the amount of air conditioning is small, the opening of the electric refrigerator is reduced, and the ice is melted as much as possible to release the cooling to meet the air conditioning load. It can be seen that the ice storage air conditioning system is an effective method to "transfer electricity load" or "balance electricity load".
Ice storage air conditioning system composition
The ice storage air conditioning system includes: air conditioner host, cold water pump, cooling water pump, cooling tower, cold storage water pump, cold release water pump, heat exchanger, ice storage tank, etc. Compared with the conventional air conditioning system, the ice storage system adds ice storage tanks, heat exchangers and other devices.
The benefits of ice storage air conditioners
Reduce the installed capacity and power of the refrigeration host, which can be reduced by 30%-50%
Make the air-conditioning chiller run more smoothly and improve the utilization rate and service life of the chiller. Reduce the corresponding power equipment investment, such as: transformers, distribution cabinets, etc.
Reduce equipment maintenance
Reduce the operating cost of the air conditioning system, the greater the time-of-use electricity price difference, the more money the owner saves
As an emergency cold source, the self-provided power can be used to start the water pump to melt ice for cooling during a power outage, reducing the investment in the emergency power generation system
Reduce the effective floor space of the motor room
The combination of ice storage system, large temperature difference system and low temperature air supply system can further reduce initial investment and help improve air quality
Application of ice storage air conditioning system
1. Shopping malls, hotels, restaurants, office buildings and other occasions where the peak cooling load and the peak electricity consumption are basically the same and last for a long time. (Example: Tsinghua Smart Building, Central Radio Station)
2. Gymnasiums, exhibition halls, theaters and other places with large cooling load and short duration. (Example: Shanghai Science and Technology Museum)
3. Pharmaceuticals, food processing, beer industry, dairy industry, etc. use a large amount of cooling, and most of the air-conditioning loads are concentrated in the manufacturing industry during the day. (Example: Beijing Oriental Food Delivery Company)
4. For places where the capacity of the existing air conditioning system can no longer meet the load demand and the cooling capacity needs to be expanded, it is most beneficial to transform into an ice storage system without adding the main engine.
Advantage
(1) Save electricity bills.
(2) Save the cost of electric equipment and the trouble of electricity consumption.
(3) The cold storage air conditioner has high efficiency.
(4) Save the cost of cold water equipment.
(5) Save the cost of the air-conditioning box pouring equipment.
(6) Good dehumidification effect.
(7) When the power is cut off, the general power generator can still keep the indoor air conditioner running.
(8) The cooling effect can be achieved quickly.
(9) Save the maintenance cost of air-conditioning and electric equipment.
(10) Reducing noise The flow of cold water and circulating air are reduced, that is, the vibration and noise of the water pump and air-conditioning unit are reduced.
(11) Long service life.
shortcoming
(1) For the ice storage system, its operating efficiency will be reduced.
(2) The cost of cold storage equipment and the space occupied by it are increased.
(3) Increase the thermal insulation cost of water pipes and air ducts.
(4) The coefficient of performance (COP) of the refrigeration host of the ice-storage air-conditioning system should decrease.
