Cold Chain & Environment Control

Also called: GI racking, hot-dip galvanised rack

Pre-galvanised or hot-dip · for condensing environments

Powder coat lifts where condensation cycles daily. Galvanising is the standard specification below 5 °C.

Also called: mobile base racking

One working aisle · racks on powered rails

The most common cold-store density answer in Europe and increasingly here — up to 80–90% more pallets in the same refrigerated volume.

Deep lanes · LIFO

Cheapest density where SKU count is low and rotation tolerates LIFO.

Battery shuttle rated for −25 °C

Deep-lane density without sending an operator into the lane. Battery performance is the specification to check.

Open mesh · sprinkler compatible

In-rack sprinklers need to wet the level below, and mesh does not hold meltwater the way a solid deck does.

Spaced for forced-air circulation

Pull-down racking is designed around airflow, not around cube.

60–200 mm · cam-locked panels

60–80 mm for chillers, 150–200 mm for freezers. Panel thickness is the largest single lever on running cost.

Also called: walk-in cooler, walk-in freezer

Chiller, freezer or dual temperature

Built inside an existing shed. Moves with the operation, unlike a masonry room.

Insulated floor with heater mat for freezers

Without under-floor heating a freezer heaves the slab. This is a build-stage decision only.

Controlled atmosphere and humidity

Produce, banana and mango ripening.

Also called: CA store

Regulated O₂ and CO₂

Long-hold fruit storage.

Insulated · heated frame for freezers

The heated frame prevents the door freezing shut, which is the routine failure otherwise.

Also called: rapid roll freezer door

Opens in 1–2 s · insulated curtain

Open time is the loss. Speed matters more than insulation on a high-traffic opening.

Also called: strip door

Standard, polar or ribbed grade

Cheapest barrier, and polar-grade strip is the only kind that stays flexible below freezing.

Ambient or heated air stream

Barrier without a physical obstruction, for high-traffic dock and entrance openings.

Inflatable or cushion seal

Keeps the refrigerated envelope continuous from store to trailer.

Buffered transition zone

Two doors, never both open. The standard answer for freezer-to-ambient transitions.

Ammonia, glycol or HFC · single or multi-compressor

Sized on heat load, door traffic and pull-down duty, not on room volume alone.

Ceiling or wall mounted · defrost cycle

Placement determines whether the room has hot corners. Airflow paths must be planned with the racking layout.

Rapid pull-down

Freezing rate determines product quality; a storage freezer is not a blast freezer.

Also called: data logger, RTD probe

Wired or wireless · calibrated and traceable

Mapped placement, not convenient placement. Validation defines the probe positions.

24×7 logging · SMS and email escalation

The excursion nobody saw is the one that costs a consignment.

Qualification study of the room

Required for GDP-compliant pharmaceutical storage, and re-run after any layout change.

EPS, PUF or VIP · with gel packs or PCM

Last-mile cold chain, validated as a pack-out configuration with a stated hold time.

Also called: high volume low speed fan, big ceiling fan

3.5–7.3 m diameter

One HVLS fan replaces a dozen wall fans and de-stratifies the air under the roof. The best value comfort measure in an Indian shed.

Wall, pedestal or man cooler

Spot cooling at fixed workstations.

Also called: desert cooling, ducted air cooler

Ducted or spot

Effective in dry heat; ineffective and counterproductive in humid coastal conditions.

Desiccant or refrigerant

Monsoon-season condensation, rust and mould control. Essential where cartons and labels are stored.

Wind-driven or powered

Passive removal of the hottest layer of air. Very low running cost.

Ducted extraction with filtered intake

Charging bays, battery rooms and any process producing fume.