Utilities - Water Bio-Digester Cooling Reading 100 kW Chiller Hire
The contents of a bio-digester plant needed to be cooled to arrest biological activity, prior to the system being emptied to enable maintenance work to be carried out.
What Did We Do?
Our regional manager attended site to assess the nature and scale of the cooling requirement. A proposal and project plan was then produced to address the need.
How Did We Do It?
Once agreed with the customer, Carrier Rental Systems delivered a high performance, high efficiency 100 kW chiller to site. After commissioning, it was connected to the plant’s main process heat exchanger. This enabled rapid contactless cooling of the bio-digester contents as they passed through their own circuit within the heat exchanger.
Equipment – 1 x 100 kW CRS chiller
End User – A major water utility company
Application – Bio-digester plant producing fuel gas
Additional – Flexible Pipe Work, Cable & Buffer Tank
The Results
Once installed and commissioned, the chiller rapidly reduced the temperature of the bio-digester contents, progressively slowing biological reactions to near zero. This enabled the safe removal of materials, allowing maintenance work to begin.
The Regional Sales Manager at Carrier Rental Systems said: “This was an unusual hire project, as typically boilers are required to initiate biological activity during start-up. In this case, a temporary cooling solution was needed to reverse the biodigestion process, enabling esse

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