As global attention intensifies on energy conservation and carbon neutrality, industries related to food storage and transportation—particularly cold storage—are under increasing scrutiny for their energy consumption. With large refrigeration systems consuming significant energy, cold storage facilities, especially those maintaining temperatures of -18°C to -20°C, face rising challenges to improve energy efficiency. One of the most promising solutions comes from the use of phase change materials (PCMs), which have revolutionized the way these facilities manage cooling load and energy use.
Tailored Energy Efficiency Solutions
Cold storage facilities have traditionally lacked standardized energy consumption metrics due to their varied construction, location, and operational factors. Differences in insulation, refrigeration methods, and even the type of refrigerants used all contribute to unique energy demands for each facility. This lack of uniformity has made it difficult to compare energy efficiency across different operations, with no clear national standard for energy consumption.
The implementation of phase change materials offers a flexible, customizable solution based on the specific conditions of each cold storage facility. By integrating PCM storage tanks and utilizing off-peak electricity hours (valley electricity), cold storage operations can significantly reduce their peak energy consumption, allowing for substantial cost savings and more efficient operation.
Understanding Cold Storage Loads
A cold storage facility's load is typically made up of structural load (20-30%), goods load (60%), and other operational factors like lighting and equipment (10%). For facilities with lower turnover rates, the load on the structural elements is more significant. In such cases, PCM can be applied directly to the insulation panels of the cold storage facility. During off-peak hours, the material stores energy, and during peak hours, the facility can maintain the necessary temperatures without turning on compressors.
For higher turnover facilities, where the goods load plays a larger role, an active cooling system is needed. PCM tanks can be used to store energy, which is then circulated through the facility via a coolant to meet cooling demands.
Optimized Phase Change Material Storage
Phase change material tanks provide a practical and efficient solution for cold storage systems. The amount of PCM required is calculated based on the facility's cooling load and the temperature differential. By leveraging off-peak electricity, this system can minimize electricity costs, often reducing bills by up to 50% compared to standard peak-hour electricity rates.
For example, a large cold storage facility with a daily cooling demand of 2.16 x 10^7 kJ would typically consume around 4,000 kWh of energy per day. However, by incorporating PCM systems, this facility could save as much as 720,000 yuan annually on electricity costs.
Glacier Coolant’s Commitment to Energy Efficiency
As a leader in the coolant industry with over 30 years of experience, Glacier Coolant is at the forefront of developing phase change materials suited for a variety of temperature ranges and operational conditions. Our PCM solutions, which offer storage densities exceeding 300 kJ/kg and cover temperature ranges from -10°C to -20°C, are designed to enhance the performance and sustainability of refrigeration systems across industries.
Through rigorous testing and development, Glacier Coolant’s PCM products have demonstrated exceptional durability and performance, withstanding over 1,000 cycles without significant degradation. By helping cold storage facilities transition to energy-efficient cooling systems, Glacier Coolant supports the global push for green development while also improving operational efficiency for our clients.
The Future of Cold Storage: A Green, Efficient Approach
The use of phase change materials in cold storage is more than just an innovation—it is a response to the urgent call for energy-efficient solutions in the cooling industry. By reducing energy consumption and improving the financial performance of cold storage operations, PCMs represent a forward-thinking solution to the growing challenge of energy demand in the refrigeration sector. As the adoption of this technology expands, it will become an essential part of the future of energy-efficient cold storage.
About Glacier Coolant
Glacier Coolant is a pioneering company with over three decades of expertise in the development of refrigerants and phase change materials. We specialize in offering innovative, energy-efficient cooling solutions that reduce operational costs and support sustainable industry practices. Our products are trusted by companies worldwide in sectors ranging from food storage to chemical manufacturing.