Cadbury, Ikeja (Lagos), Nigeria
In brief. A single 2,317 kW Thermax chiller cools the plant even when the engine is stopped, because it can burn gas on its own.
At a confectionery plant in Lagos, one 3.7 MW Rolls-Royce engine drives one 2,317 kW Thermax absorption chiller. The chiller takes the exhaust and the jacket water and, when needed, burns gas on its own. Water leaves it at 6 °C.
What does the project consist of?
| Parameter | Value |
|---|---|
| Industry | Confectionery plant |
| Engines | Rolls-Royce, 1 engine of 3.7 MW |
| Fuel | Natural gas |
| Heat for the chiller | Exhaust, jacket water and direct gas firing (100 % backup) |
| Chillers and cooling | 1 chiller, 2,317 kW (660 TR) |
| What the cooling is for | Process cooling and air conditioning, water at 6 °C |
Why is this example useful for a Russian site?
Where gas is available, the burner replaces a separate backup chiller. At full burner output, with a COP of 1.4, the chiller needs about 180 m³/h, and this hourly limit is agreed in advance. If the engine stops because of a gas outage, the burner will be left without gas too, and the site without cooling. More: trigeneration for food plants.
How does this kind of scheme work?
The built-in burner tops up cooling when the engine is stopped or there is not enough heat.
Based on Thermax materials
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