Use Case Food Industry: Safety and Space Utilization in Balance
The food industry places special demands on transport: constant temperatures, strict hygiene requirements, and at the same time pressure to use space and costs efficiently. This article shows how reefers or refrigerated containers should be planned, what role a container loading calculator like CoLoCa plays, and how safety, sustainability and cost-effectiveness can be combined in practice.
Context: Temperature and Hygiene Requirements
Food transports are subject to clear rules: HACCP, temperature-controlled cycles and documented cleaning are as much part of the process as correct loading. For fresh goods (fruit, vegetables, dairy products), tight temperature windows apply that must be kept constant from harvest to recipient. At the same time, air circulation and storage clearances are decisive — packing that is too dense leads to poor cooling, too much empty space increases transport costs and CO2 emissions.
Key requirements at a glance:
- Constant target temperature plus tolerance range
- Sufficient air circulation around each pallet/batch
- Food-appropriate packaging and pallets
- Cleaning and disinfection protocols before loading
- Documentation and temperature logging during transport
How a Container Loading Calculator (CoLoCa) Takes Reefers into Account
A specialized tool like CoLoCa helps to calculate the volume and utilization of different container types precisely — also for refrigerated containers. Relevant functions are:
- Dimension-based calculation and direct volume input (m³ or ft³) for pallets and cartons.
- Automatic conversion between units (e.g. m³ ↔ ft³).
- Consideration of all standard container types (20ft, 40ft, 45ft; Standard and High Cube) with precise internal dimensions.
- Display of percentage utilization, remaining volume and color coding (Green/Yellow/Red) for quick assessment.
- Option to easily adjust usable volume for reefers (e.g. 3–8% deduction for refrigeration unit, air channels and linings) to enable realistic planning.
- Share feature to pass the calculation on to colleagues, forwarders or customers — practical for coordinating temperature windows, loading plans and documents.
These functions support logistics professionals in recognizing early whether a shipment fits into a reefer or whether consolidation or other container sizes make more sense.
Optimal Space Allocation under Safety Requirements
The balance between hygiene, air circulation and high space utilization requires some rules:
- Clearance for airflow: Depending on the product type, keep at least 2–10 cm clearance from walls and ceilings. More sensitive goods require additional air channels.
- Pallet vs. block stacking: Uniform pallet sizes (e.g. 120 × 80 × 100 cm) make planning easier. Block stacking saves space but can impede air circulation.
- Temperature-sensitive zones: Place temperature-critical items near the reefers' air inlet, not directly in front of the unit.
- Hygiene layout: Clean aisles and cleaning zones before the loading area, documented cleaning before loading and use food-contact materials.
- Labeling and traceability: Each pallet should be marked with product information, target temperature and batch.
CoLoCa helps to run through different loading variants (e.g. more pallets vs. loose cartons) and visualize the impact on utilization and remaining volume.
Cost Aspects of Using Refrigerated Containers
Refrigerated containers are more expensive than dry containers — both in terms of rental and energy consumption. Important influencing factors:
- Rental and handling costs: Reefer containers have higher daily rates and require special handling resources.
- Energy consumption: Power for refrigeration units adds variable costs per shipment; longer runtimes increase costs proportionally.
- Effectiveness of space utilization: Higher utilization reduces costs per unit volume. Tools like CoLoCa make visible whether, for example, a 20ft reefer or a 40ft High Cube is more economical.
- Consolidation vs. partial loads: Partial loads (LCL) are often more expensive per m³ but make sense for time-sensitive or smaller shipments.
Practical tip: Calculate the cost per m³ and per pallet for different container options. Take into account rental duration, energy, handling and possible cooling loss due to door openings.
Case Study: Fresh Goods Export with CoLoCa
Example: An exporter wants to ship 500 cartons of strawberries. Carton dimensions: 60 × 40 × 30 cm (0.072 m³). Total volume: 500 × 0.072 m³ = 36 m³.
Step 1 — Simulate container choice:
- 40ft High Cube: 76.36 m³ (theoretical)
- Assumed reefer effect: Usable volume realistically reduced by 5% → 72.54 m³
- Utilization: 36 / 72.54 = 49.7% → Status: 🟢 Underutilized
Step 2 — Optimization:
- Consolidation with other shipments or topping up with complementary refrigerated goods to increase utilization to 70–90% (🟡 optimal)
- Alternative: Check 20ft reefer (usable vol. ≈ 33–37 m³) — here the shipment would barely not fit or would be very tight (🔴 critical), therefore likely more expensive per unit.
Step 3 — Plan hygiene and load securing:
- Protect pallets with film, ensure clearance to the wall, prepare temperature control.
- Arrange cleaning before loading and temperature logging.
This example shows: Precise volume calculations can achieve both cost efficiency and product safety. CoLoCa makes it easier to decide whether consolidation, a different container type or a change in packaging is more sensible.
Practical Tips for Logistics Professionals and Exporters
- Always plan with a safety margin for usable volume in reefers (3–8%).
- Standardize pallet and carton dimensions to increase loading efficiency.
- Use simulations (different container sizes) instead of just intuitive estimates.
- Document and share calculations with partners via share link to avoid misunderstandings.
- Consider sustainability aspects: Better utilization reduces transports and emissions.
Conclusion
In the food industry, the combination of hygiene standards, temperature control and space-efficient planning is crucial. A container loading calculator like CoLoCa supports realistic volume estimates, takes reefer peculiarities into account and provides the basis for economical decisions. In this way, product safety, cost efficiency and sustainability can sensibly be brought into harmony.