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Common Reasons Why Your Fluid Chiller Isn’t Performing

Fluid chillers are an essential piece of industrial equipment in many industries and it’s critical that they operate reliably – so much so that many organisations choose to run them on independent electrical power rather than on the grid. When a chiller isn’t performing, it can be frustrating, costly and dangerous. Here are some insights into why this might occur, from CAT rental – leading providers of fluid chillers in Australia. 


It’s the Wrong Size for the Job 
If a chiller isn’t holding temperature, it may be because the heat load is simply too high for the equipment to handle. Like all industrial equipment, fluid chillers in Australia operate on electrical power (grid or generator-based) and come in a wide range of capacity, which makes it essential to choose a chiller that can handle your facility’s requirements. An under-powered fluid chiller is an issue that often occurs when a facility has expended recently (thereby increasing the load on the chiller) or when buyer’s simply haven’t received the right technical expertise when selecting fluid chillers in Australia. 

The Heat Transfer Fluid is Low in Thermal Conductivity 
The cooling mechanism of a chiller usually relies on water or ethanol for the heat transfer process. Each liquid has it’s pros and cons – water offers high heat capacity and thermal conductivity but can cause rusting/corrosion over time, while ethanol is a high-performance circulator but is flammable, so additional safety protocols are required. As a result, the fluid is often changed to a mix of propylene glycol or ethylene glycol with water to deliver the best of both fluids. 

This mix offers better performance than ethanol with the anti-bacterial and corrosion protection of the chemical solution, but it doesn’t have the high heat capacity of pure water. This means that a reduction in performance. Your mix may have to be upgraded to the recommended mix of 30% ethylene glycol, 70% water to maximise performance benefits. 

The Setpoint Temperature is Too Low 
In all fluid chillers, the cooling capacity of the equipment decreases as the temperature decreases – so, if your fluid chiller isn’t performing, it’s a good idea to check your setpoint temperature as it may be too low for the chiller to hold. This can be checked in the manual, but most manufactures recommend a setpoint temperature of 20 degrees Celsius. By increasing your setpoint temperature to the manufacturer’s recommendations, you actually achieve a higher cooling capacity. 

CAT Rental – Supplying Electrical Power Solutions and Fluid Chillers in Australia 
The CAT rental team at Energy Power Systems Australia has the technical and engineering expertise to assist you with a wide range of commercial and industrial solutions, including electrical power solutions and fluid chillers. Our rental agreements are designed to support your project, offering affordability, flexibility and maintenance expertise. For more information, contact our CAT rental team today. 
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