Rack Clad Structure for Cold Chain: The Economics of Freezing Air

In cold storage, air is your most expensive inventory. Every cubic foot of empty space you refrigerate to -20°F (-29°C) bleeds operational profit. Traditional warehouse construction creates massive “void spaces” above the racks and in wide forklift aisles.

The Rack Clad Structure eliminates the distinction between the building and the shelving. By using the racking itself to support the roof and walls, we shrink the building envelope to the absolute minimum required volume, drastically reducing the refrigeration load and construction timeline.

Talk With An Expert

The Thermal Envelope: Why Structure Dictates ROI

In the frozen food and pharmaceutical industries, the cost of land is often secondary to the cost of energy. A standard warehouse with a steel frame and separate racking system inherently wastes space. You are cooling the steel columns, the trusses, and the clearance gaps required for human-operated forklifts.

The Geautomatiseerd palletmagazijn utilizing a Rack Clad design solves this via physics, not just logistics. The uprights (constructed from Q355 high-strength steel) serve a dual purpose: they hold the pallets and support the external PU sandwich panels and roof snow loads. This integration removes the need for structural building columns, allowing us to increase storage density by up to 40% compared to traditional freezers.

Starack-Shuttle systems maximize volume density, critical for reducing energy costs in cold chain environments.

Deep Lane Storage: Sacrificing Selectivity for Efficiency

Cold chain operations, particularly in meat processing or frozen vegetable production, often involve high volumes of the same SKU (Stock Keeping Unit). In these scenarios, the “honeycomb effect” of selective racking is a financial liability.

The starack-Shuttle configuration allows for multi-deep storage (4 to 10 pallets deep). By utilizing a Satellite Shuttle carried by the stacker crane, we eliminate the aisles between racks.

Thermal Inertia: A denser block of frozen product maintains temperature better than separated pallets, providing a safety buffer during power outages.
Refrigeration CapEx: Smaller building volume means smaller compressors and condensers are required for the initial installation.
LIFO/FIFO Logic: The system manages batch production effectively, ensuring that the First-In-First-Out (FIFO) protocols required for food safety expiration dates are strictly followed via WMS control.

Eliminating the Human Variable in Sub-Zero Environments

Operating manned forklifts in a -13°F (-25°C) freezer is a logistical nightmare. Equipment batteries deplete rapidly, condensation on floors causes wheel slippage, and recruiting staff willing to work in these conditions is increasingly difficult.

Our automated systems are engineered for these extremes. The starack machinery uses special cold-resistant cabling and lubricants.

Clean, GSP-compliant automated storage reduces contamination risks and human error in pharmaceutical and food cold chains.

Furthermore, the system incorporates Regenerative Braking Units. When a 2,000 lb pallet is lowered from a height of 80 feet, gravity does the work. The motor acts as a generator, converting this potential energy back into electricity to feed the grid or other motors. In a 24/7 cold storage facility, this energy reclamation can reduce overall power consumption by 20-30%, directly impacting the bottom line.

Calculate Your Cold Chain ROI

Frequently Asked Questions (Cold Chain)

1. How does a Rack Clad structure compare to a traditional building in terms of cost?

While the steel tonnage for the rack itself is higher, you eliminate the cost of a separate structural steel building frame. The total construction time is typically reduced by 20-30% because the racking and building shell go up simultaneously. Additionally, the Rack Clad structure is often depreciated as equipment rather than real estate, offering potential tax advantages.

2. What is the lowest operating temperature for the starack system?

Our standard cold chain configuration operates reliably down to -30°C (-22°F). For specialized applications like blast freezing or lower temperatures, we utilize specific steel grades and heating elements for control cabinets to ensure component longevity.

3. How do you handle maintenance in a frozen Rack Clad building?

The system is designed with remote monitoring to predict failures before they occur. For physical maintenance, the stacker cranes are equipped with onboard maintenance cabins. Since the facility is automated, lighting is generally off (Dark Warehouse), reducing heat load, but can be activated for technicians. We also recommend an integrated catwalk system for safe access to high levels.

4. Can this system handle heavy pallets of frozen meat or fish blocks?

Yes. The starack-Heavy series is designed for heavy loads. We use Q355 high-strength steel and bolted connections to handle dynamic loads of over 1,500kg (3,300 lbs) per pallet even at heights of 40 meters, ensuring stability without the “whiplash” effect common in welded racks.

5. Is a Rack Clad building considered “Real Estate” or “Equipment”?

This depends on local tax laws, but in many jurisdictions, a significant portion of a Rack Supported Building (RSB) can be classified as equipment (the rack) rather than a building. This allows for accelerated depreciation, significantly improving the project’s financial Internal Rate of Return (IRR).