The applications of this technology in conventional cold storage air conditioning and cold chain transportation cold storage air conditioning systems are also summarized. Finally, this study
General structure of a solar cold storage air-conditioning system is shown in Fig. 3. The charging/discharging process is similar to that of a general cold storage air-conditioning
The latent heat storage of phase change materials (PCMs) can be used in refrigeration and air conditioning systems. Storing cool energy during the nighttime (off-peak hours) and releasing the cool energy during the
The solar-powered air-conditioning system with cold storage technology uses solar energy, which is environment friendly and the cold storage system can be operated under the low air-conditioning load period such as the night.
Using phase change materials in the energy storage systems, the heat exchangers and thermal control systems are the potential techniques. This article also reviewed the phase change material cold storage when applied in the solar-powered air-conditioning system based on the previous study.
Zhai et al. 59 experimentally studied the solar-powered absorption air-conditioning with cold storage system. A 24-story building was built in Jiangmen, China, which consisted of hotels, business centers, entertainment places, and an education center. The solar system was installed on the roof of the building.
The developed solar-powered cold storage is a low cost, simple and energy-efficient unit. Installation, operation and maintenance costs of the cold storage are also less. The cold storage is integrated with IoT-based sensors for remote monitoring and controlling of temperature and humidity as well as tracking of the stored items.
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.
To solve the serious problems, some studies conducted theoretical analysis and experimental studies. The cold storage system is found to store the cold energy using a storage medium and release energy as needed, which is widely used in building air-conditioning system.
