When discussing thermal storage cooling technology, one common misconception is that ice thermal storage systems are only valuable in regions with peak–off-peak electricity price differences. While time-of-use pricing can indeed amplify economic benefits, it is far from being the only condition that determines whether an ice storage system is suitable. In reality, ice storage offers multi-dimensional value—load management, space optimization, emergency cooling, and green energy integration—that makes it beneficial even in regions without significant electricity price gaps. Electricity Price Differences: A Benefit, Not a Requirement In areas with time-of-use electricity tariffs, ice storage reduces operating costs by producing ice at night and releasing cooling during daytime peaks. This cuts peak demand, lowers electricity bills, and reduces chiller operation during the most expensive hours. However, the true value of an ice storage system lies in its ability to store...
In central air conditioning system design, ice storage chillers and traditional chillers are two mainstream technologies. While both serve as core cooling sources, their operation logic, cost structure, and long-term benefits differ significantly. Understanding these differences helps businesses choose the most suitable solution for their needs. 1. Operation Logic and Cost Structure: The Power of Time Shifting • Traditional Chillers: Work on a “produce-as-needed” model. When cooling is required, the compressor runs in real-time, and electricity costs rise directly with demand—often peaking during expensive daytime hours. • Ice Storage Chillers: Follow a “time-shifting” approach. They make ice at night during off-peak, low-cost electricity periods. During the day, when rates are high, the system relies on melting stored ice to meet cooling demand, cutting peak-hour electricity costs dramatically. 2. Economics: Balancing Upfront Investment with Lifecycle Savings • Tra...