Cold room design, refrigeration costs and the RFQ process in Lagos
In Lagos, power strategy and humidity control are the cold room design — the refrigeration plant is the easy part.
Cold room design in Lagos
A Lagos cold room design that ignores power will fail. Grid supply is intermittent, diesel is expensive, and product loss from a long outage can exceed the annual energy bill. The design basis must state the assumed outage frequency and duration, the required autonomy, and the acceptable temperature rise. From there, the engineering follows: generator sizing with controlled compressor restart, thermal mass or eutectic buffering to ride through short interruptions, and solar assistance where roof area and load profile allow.
Year-round high humidity makes latent load and defrost strategy central. Every door opening admits moist air that becomes frost on the evaporator, which cuts capacity and raises energy use until defrost clears it. Fast doors, air curtains, a conditioned dock buffer and demand-based defrost control matter more than incremental panel thickness.
Frozen protein imports through Apapa and Tin Can arrive in port-discharge peaks and then sit for extended dwell. That combination — high inbound pull-down demand plus long steady holding — argues for staged capacity: enough duty for the peak, with efficient part-load operation for the long quiet periods. Ask suppliers how the plant behaves at 25–30 % load.
Refrigeration costs in Lagos
Imported equipment, duties, clearance and installation logistics all inflate delivered cost relative to ex-works pricing. Insist on landed and installed quotations with duties and clearance allocated by name, and require the supplier to state lead time including customs.
Operating cost is dominated by fuel where generator hours are high. A design that reduces run-hours — through solar assistance, thermal buffering and lower infiltration — often has a shorter payback than any efficiency measure aimed at the compressor itself. Require an annual operating model that states litres of diesel, grid kWh and solar kWh under your stated reliability assumptions.
| Cost line | Indicative range | Notes |
|---|---|---|
| Insulated envelope (panels, doors, floor) | USD 170–330 / m² | Vapour sealing critical in high humidity. |
| Refrigeration plant, installed | USD 950–1,800 / kW duty | Part-load efficiency matters as much as peak duty. |
| Generator, changeover and fuel system | USD 400–900 / kVA | Autonomy hours and restart logic stated in the design basis. |
| Solar assistance and thermal buffering | USD 700–1,200 / kWp | Payback driven by displaced diesel, not grid tariff. |
Indicative planning benchmarks only — not a quotation. Actual pricing depends on scope, site conditions, refrigerant choice and supplier capacity, and must be confirmed by qualified suppliers.
The cold storage RFQ process in Lagos
The exclusions register carries unusual weight here. Customs clearance, duties, site power, civil works, fuel storage, and commissioning travel are the items that most commonly appear in one bid and not another. Name each, and require every bidder to mark it in or out.
Require identical returns: duty at design conditions, part-load performance, annual operating model with diesel and kWh, autonomy and restart logic, humidity and defrost strategy, landed-cost breakdown, lead time including customs, and West African references.
Lagos RFQ checklist — name these explicitly
- Outage assumptions, required autonomy and acceptable temperature rise
- Customs duties, clearance and landed-cost responsibility
- Defrost strategy and humidity control for high-latent conditions
- Part-load performance for long low-demand periods
- Fuel storage, generator maintenance and local service coverage