Central air conditioning cold water energy storage

What is cold energy storage in air conditioning systems?

In this review, we will mainly introduce cold energy storage applied in air conditioning systems. Compared with the conventional air conditioner, cold storage air conditioning has an additional energy storage tank, which is connected to both the evaporator and heat exchanger in parallel.

What is cool storage air conditioning?

For the technology of cool storage air conditioning, electric refrigerator is adopted and the sensible heat or latent heat of the cool storage medium is used to store the cold energy in a certain way when the power load is very low.

What is a cold storage system?

The cold storage system is suitable for domestic application (typical in/out primary circuit temperature = 7- 12°C) since it stores cold energy at 5.5°C. The innovative heat exchanger system implemented in the storage unit allows the increase of energy charge/release dynamics and, therefore, leads to high power both in charge and release phases.

What is a chilled water storage system?

In chilled water storage systems, a constant source of water (usually a water tank) is utilized to store the energy which can be provided by a central or off-site chilled water plant. Ice storage is another popular cold storage method. Ice is generated during off-peak hours and melts to provide cold energy during peak hours.

Is there a comprehensive summary of cold energy storage technology?

However, there is no review focusing on the comprehensive summary of cold energy storage technology including the air conditioning with cold storage devices, detailed classification of the cold storage medium and the introduction of cold storage technologies and applications.

Does a chilled water storage system require a large storage tank?

However, the chilled water storage system primarily utilizes sensible heat (4.2 J/g·°C) to store cold energy; therefore, it requires a relatively large storage tank compared with the PCM-based energy storage system that has a large latent heat of fusion.