Why the design matters more than the construction itself

A cold storage facility for fruit is not just an insulated building. It is a technological installation in which the building, the refrigeration equipment, the flow of goods and the way it is operated must all be designed together. Mistakes made at the design stage – a room too large for the harvest pace, a badly placed loading dock, undersized insulation – are paid for year after year through product losses and high energy bills. That is why a successful project starts with questions about the business, not with drawings.

Starting data: what the designer needs to know

Before any sketch, the design team needs some clear information from the client:

  • Type of fruit and varieties – apples, pears, plums, cherries, grapes or a mix. Each product has different optimal temperatures and humidity levels.
  • Total capacity and loading rate – how many tons per day come in during the harvest and how long the season lasts.
  • Desired storage period – quick sale within a few weeks or storage until spring, which may require a controlled atmosphere.
  • Delivery method – wholesale in pallet bins, on-site sorting and packing, export.
  • The site – area, road access, available utilities (especially electrical capacity), geotechnical survey.

Components of a complete project

Division into cold rooms

Instead of a single large volume, modern facilities are divided into several rooms of moderate capacity, typically a few hundred tons each. This way a room can be filled quickly and cooled properly, and varieties with different requirements are kept separate. Rooms can be opened one after another during the sales season without disturbing the rest of the produce.

Structure and envelope

A lightweight steel structure with large spans and no unnecessary intermediate columns allows efficient pallet layout. The envelope is usually made of sandwich panels with polyurethane or PIR foam, with thicknesses chosen according to the internal temperature. Joint details – at the floor, corners and eaves – matter as much as panel thickness, because thermal bridges and air leakage lead to condensation and ice.

Floor and foundations

The floor must carry concentrated loads from high stacks and forklifts, and in rooms with sub-zero temperatures protection against ground freezing is provided. Floor flatness directly affects stacking safety and the service life of handling equipment.

Refrigeration system

The design defines the refrigeration capacity for the critical phase – rapid cooling of freshly harvested produce – not just for holding. The refrigerant, evaporator type, defrost system and automation with remote monitoring of temperature and humidity are selected.

Technical area and logistics

  • loading docks with sectional doors and dock shelters;
  • a technical corridor or chilled anteroom to limit the ingress of warm air;
  • space for sorting, grading and packing, if needed;
  • technical rooms, changing rooms, an office and restrooms for staff.

Plan for expansion now

Many growers start with a small capacity and double it after a few years. A good design provides from the outset the direction of expansion, spare electrical capacity and the ability to connect new rooms to the same machine room. The cost of such planning is minimal, and the later savings can be considerable.

A successful cold storage facility can be recognized by the fact that it operates predictably: the rooms reach temperature on time, losses are low and the energy cost per ton stays under control.

Documentation and legal aspects

In addition to the architectural and structural design, sections on building services, fire safety and, where applicable, an environmental impact assessment are required. For obtaining a building permit and for any subsidy applications, always check the current requirements with the local public authorities and the competent institutions, as the rules may change.

Conclusion

A successful cold storage project starts from the product and the way you sell it, then translates these requirements into rooms, structure, insulation and equipment. S.A. COLASS designs, fabricates in its own plant and erects steel structures for cold storage facilities, including as general contractor – such as the 480-ton facility in the village of Cobani, Glodeni district.

If you are planning a fruit storage facility, contact us at +373 78 30 40 40 or visit our office at 8 Uzinelor St., Chișinău, for an initial technical discussion.