Fruits & vegetables cold storage — design, capacity and selection

What is an F&V cold storage?

An F&V cold storage is an insulated PUF panel room with a refrigeration system, controlled humidity, ante room and airflow design tuned to a specific commodity or group of compatible commodities.

Mixing incompatible commodities (e.g. apples and onions) in the same room is a common mistake — ethylene producers can damage ethylene-sensitive produce.

Suitable commodities (examples)

• Apple, kiwi, pear — long-term cold or CA storage
• Potato, onion, garlic — medium-term storage with crop-specific conditions
• Tomato, capsicum, leafy vegetables — short-term cold holding
• Mango, papaya, banana — typically need a ripening chamber before cold holding
• Grapes, pomegranate, citrus — commodity-specific temperature and humidity

Temperature and humidity guidance

F&V holding temperatures typically range between 0°C and +13°C with relative humidity between 85% and 95%, depending on the commodity. The exact set-point and humidity are commodity-specific.

Indicative only — to be confirmed after site inspection and based on the commodity mix planned for storage.

Why commodity-specific design matters

• Ethylene producers and ethylene-sensitive commodities must be separated.
• Temperature-sensitive crops can suffer chilling injury if stored below their safe range.
• Humidity range must match commodity — too dry causes weight loss, too wet causes mold.

PUF panel requirement

PUF (polyurethane foam) sandwich panels with appropriate thickness and density are the standard insulation for cold rooms in India. Panel thickness depends on the room temperature (chilled vs frozen) and ambient conditions.

Door and ante room requirement

• Insulated sliding or hinged door sized for the loading method (manual pallet, fork-lift).
• Strip curtains at the door reduce air loss during opening.
• An ante room is recommended where door openings are frequent — reduces heat ingress and humidity loss.

Airflow importance

Uniform airflow prevents hot/cold spots and uneven ripening or weight loss. Evaporator selection, air throw and rack layout must be planned together.

Storage capacity explanation

Capacity (in MT) depends on commodity bulk density, packaging (crates / bins / pallets), stacking height and aisle space. CFT (cubic feet) is the room volume; MT depends on how that volume is filled.

Small, medium and large project examples

• Small: single room for a farmer or local trader, short-term holding.
• Medium: 2–4 rooms for a wholesale supplier or FPO.
• Large: multi-chamber project for traders, exporters and food companies (CA storage may apply).

Electricity and DG requirement

Cold storage typically requires 3-phase power. Connected load and DG sizing depend on the refrigeration capacity (TR), insulation, ambient temperature and door openings. Use the Energy Calculator for an indicative load.

Client civil scope (typical)

• Levelled RCC floor or insulated flooring as per design.
• Drain points, plinth and approach as required.
• 3-phase electricity connection up to the panel.
• Pollution / fire / local permissions where applicable.

Subsidy possibilities

F&V cold storage projects may be eligible under MIDH / State Horticulture Mission, NHB, AIF and certain state schemes. Subsidy is Subject to official scheme guidelines and final eligibility verification.

Bank loan documents

See the Banking page for the full document checklist. A bankable DPR aligned with the technical scope is the most important single document.

Common mistakes

• Mixing incompatible commodities in one room.
• Under-sizing refrigeration for ambient and door openings.
• Skipping the ante room — heavy heat ingress and ice issues.
• Ignoring humidity control for crops that need it.
• Choosing panel thickness only on price, ignoring room temperature.

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