Ammonia refrigeration procurement case studies: before, approach, decision criteria, after

1. How to read these case studies

Each case is structured the same way so the pattern is easy to compare against your own project.

• Before: the plant, compliance or cost problem that triggered the procurement
• Procurement approach: tender format, bidder pre-qualification and how proposals were normalised
• Decision criteria: what the award was actually decided on — in order of weight
• After: the outcomes once the plant was commissioned and operating

2. What repeats across every successful NH₃ procurement

Five different projects, five different constraints — and the same three disciplines in each.

• Design basis fixed first: duty per suction level, design ambient, redundancy and safety scope defined before any supplier was contacted
• Bids normalised onto one scope: exclusions priced in, so a 20–35% raw spread narrowed to roughly 10–12% of genuine difference
• Award on lifecycle value: 10-year energy at the real operating profile, documentation quality, service coverage and controls ownership — not the lowest lump sum

3. The decision criteria that actually decided these awards

Brand and headline price appeared in every tender — and decided none of them.

• Demonstrated NH₃ references at comparable duty, climate and application
• Refrigerant charge in kg and the architecture used to minimise it
• Part-load COP at 50–70% load, where industrial plants spend most of their life
• Safety documentation: named code, detection layout, HAZOP participation, commissioning protocol
• Service model: named technicians, guaranteed response times, critical spares, training in the working language

4. Apply the same approach to your project

The cases above were run as structured, comparable procurements. ColdMatch exists to give any buyer the same discipline without building it from scratch.

• Start from the design basis: the RFQ checklist and supplier comparison guide below walk through it
• Pre-qualify suppliers on NH₃-specific competence, not general refrigeration experience
• Normalise proposals on duty, charge, safety scope, controls and 10-year cost before comparing price
• Keep engineering, construction and compliance with the appointed contractors — procurement structure is the buyer's tool

Best for

Commercial and industrial cold chain projects, typically from USD 250,000 upward: cold rooms, refrigerated warehouses, blast freezers, processing plant refrigeration and distribution hubs.

Not a fit: domestic refrigerators, household or office air conditioning, small repair call-outs, or spare-parts-only enquiries.

Typical cold chain project types

• Fruit, vegetable and horticulture cold storage with pre-cooling
• Meat, poultry and fish chilling plus blast freezing
• Dairy and beverage process cooling
• Pharma and vaccine GDP cold chain (2–8 °C, −20 °C, −70 °C)
• Refrigerated warehouses, 3PL hubs and mobile cold rooms

Cold room vs refrigerated warehouse

A cold room is a single insulated chamber, usually under ~500 m³, serving one process or storage step. A refrigerated warehouse is a multi-zone facility with racking, docks, air locks and a central refrigeration plant, sized by pallet positions and daily throughput rather than by room volume.

What affects project cost

• Storage volume, pallet positions and daily throughput
• Target temperature and ambient design conditions
• Refrigerant choice (NH₃, CO₂, HFC) and plant redundancy
• Panel thickness, doors, air locks and civil works
• Backup power, solar, freight, duties and commissioning

Temperature range checklist

• +12 to +16 °C — bananas, potatoes, curing
• +2 to +8 °C — pharma GDP, dairy, fresh produce
• 0 to +4 °C — meat, fish and chilled distribution
• −18 to −25 °C — frozen storage
• −35 to −40 °C — blast freezing and IQF

RFQ checklist

• Product, temperature and daily intake
• Room dimensions or required pallet positions
• Site location, ambient conditions and power supply
• Backup autonomy and redundancy level
• Budget range, timeline and scope exclusions

Build your RFQ →

Project type cluster

Agriculture and horticulture cold storage

Pre-cooling plus storage for fruit, vegetables and flowers, usually +2 to +12 °C with high humidity control and fast pull-down after harvest. Sized by daily intake in tonnes, not only by room volume.

Meat, poultry and fish cold storage

Chilling at 0 to +4 °C combined with blast freezing at −35 to −40 °C and frozen holding at −18 to −25 °C. Hygienic panels, drainage and separate dirty/clean flows are part of scope.

Pharmaceutical and API cold storage

GDP-compliant 2–8 °C rooms, −20 °C and, for some active pharmaceutical ingredients and biologics, −70 °C. Requires mapping, IQ/OQ/PQ, N+1 refrigeration, backup power and alarm escalation.

Refrigerated warehouse and 3PL distribution

Multi-zone facilities sized by pallet positions, dock doors and daily throughput. Typical scope covers racking, air locks, dock levellers, a central plant and an energy strategy.

Food processing plant refrigeration

Process cooling, chillers, spiral or tunnel freezers and glycol loops integrated with production lines. Usually specified alongside ISO 22000 and HACCP food safety requirements.

Mobile and containerised cold rooms

Plug-and-play 20 ft or 40 ft refrigerated units for seasonal peaks, remote sites and temporary capacity, typically −25 to +8 °C with optional solar or generator support.