The industrial landscape in parts of the world like the UK is constantly evolving. However, one thing that has remained consistent for many industries over relatively recent years, is their heavy reliance on electronics for automation, control systems, manufacturing processes, power distribution, and more.
Overheating Can Be a Real Risk in Modern Industrial Processes
A particular problem in today’s industrial electronics is the risk of excessive heat buildup. From PLCs and variable speed drives in factories, right through to SCADA systems in utilities and robotics in assembly lines, components can generate significant heat during operation.
If overheating occurs, there can be a range of unwanted consequences, such as reduced performance, component failure, unplanned downtime, and safety risks.
So, amid escalating power densities in control panels and automation systems, it is becoming ever-more obvious to industrial decision-makers that measures need to be introduced to optimise heat dissipation.
What Are the Core Strategies for Thermal Management?
Proven and effective approaches to thermal management typically fall into two broad categories: passive and active.
- Passive solutions rely on natural conduction, convection, and radiation. These encompass such measures as heatsinks, thermal interface materials (TIMs), and heat pipes. They’re silent, maintenance-free, and ideal for baseline cooling.
- Active solutions accelerate heat transfer through the use of external power. This is necessary when passive methods are unable to handle the thermal load, particularly in high-performance or confined environments.
Essential Thermal Management Products
If you’re an industrial decision-maker considering any of a range of thermal management products, you will need to carefully balance cost, energy efficiency, and environmental protection factors.
In light of this, there are various proven solutions you might consider, such as:
- Fan-Based Ventilation (Filter Fans and Axial Fans)
For many setups, the most straightforward and cost-effective option entails filter fans or axial fans being mounted on enclosure walls or doors. These devices draw cooler ambient air through filters into the cabinet, while expelling hot air.
The benefits of these units include their low initial cost, simple installation, and energy efficiency when ambient temperatures drop below desired internal levels.
Filters protect against dust ingress, as is hugely important in such sectors as food and beverages and pharmaceuticals. However, their effectiveness is compromised in hot summers or dirty environments, as they are unable to cool below ambient temperature and may introduce contaminants if they aren’t maintained.
- Enclosure Air Conditioners (HVAC For Cabinets)
For demanding applications, enclosure air conditioners can make sense as a source of closed-loop cooling. They can be likened to building HVAC, except that they are scaled for cabinets.
Often referred to as “cooling units”, these compressor-based units maintain precise internal temperatures, unaffected by whatever the external conditions may be at any given time. They typically have high Ingress Protection ratings of between IP54 and IP66, to ensure their ability to stand up to harsh environments.
These devices can be counted on to deliver excellent thermal management performance in settings where dust, humidity, or high ambient heat rule out open ventilation. Compared to the use of fans alone, these units offer such advantages as longer component life and reduced maintenance requirements.
- Heat Exchangers and Hybrid Approaches
If you’re on the lookout for a “middle ground” for your industrial environment, you might think about air-to-air heat exchangers. These devices transfer heat without mixing internal and external air, which can be ideal for moderately dirty or humid sites.
Air-to-water variants can be an excellent solution for facilities with chilled water loops. Many panel builders in the UK combine these with fans or heaters for control all year round.
Additional options such as thermoelectric coolers suit smaller loads. Meanwhile, advanced materials like thermal pads and heat sinks can help at component level.
How To Decide on The Right Thermal Management Solution for Your Application
Taking these steps will put you in a good position to determine the most appropriate products for your industrial site and application:
- Calculate the heat load. Be sure to factor in power dissipation from sources like drives, PLCs, and inverters, as well as solar gain or ambient extremes.
- Think about the environment. A dusty factory in the Midlands may require filtered fans or sealed AC. In the case of coastal premises, on the other hand, corrosion-resistant units might be the most urgently needed solution.
- Consider energy and sustainability. On a backdrop of continued high industrial energy prices as well as the UK’s net-zero targets, it can be a very good idea to look for EER/SEER-rated units, such as inverter-driven compressors.
- Take into account maintenance requirements. Remember that fans, for example, require regular filter changes, while air conditioners benefit from yearly servicing.
Conclusion: Well-Optimised Thermal Management Is a Crucial Investment
Ultimately, investing in proper thermal management for your operations, whether your chosen solutions take the form of basic fans or full HVAC-style enclosure cooling, will go a long way to protecting your industrial electronics investment.
Keeping your systems cool will mean keeping your business running smoothly, too. So, it is well worth taking the time and care to match renowned and proven thermal management products to your organisation’s specific enclosures and processes.
