PECM Issue 34 2018 | Page 6

EDITOR’S CHOICE ESSENTIAL TIPS RITTAL RITTAL OFFERS ESSENTIAL TIPS FOR ENCLOSURE TEMPERATURE MANAGEMENT IN THE FOOD INDUSTRY Food processing is a sector that demands very high levels of efficiency to meet daily production targets. Protection of Critical Equipment And productivity is a growing issue for food production worldwide. The United Nations Department of Economic and Social Affairs expects the global population to be in excess of 11 billion by 2100. That’s more than twice what it was in 1990 and so, preparing for tomorrow, there needs to be an even keener focus on productivity to make sure there’s enough food for everyone to thrive. Enclosures protect sensitive electronic and electrical items from the atmosphere in which they’re installed, providing an environment that allows them to function as required and which prolongs their service life. It’s one reason why breakdowns of critical control and automation equipment in food produc-tion are such a cause for concern. Not only are valuable resources redirected away from more strategic, long term activities, such as developing new processes, but production lines can also be stopped. The cost of the breakdown increases dramatically if this is the case, as it includes not only the cost of repairing or replacing damaged components, but also the cost of lost manufacturing time. Stopping one line on which even the humblest of food products is made can cost businesses tens of thousands of pounds for every hour that it doesn’t restart. Maintaining an internal temperature within required parameters is of fundamental importance. This often requires an active cooling solution because heat is trapped inside enclosures designed to protect against the ingress of solid objects and water to a level appropriate for many manufacturing facilities. This can be a problem in particular for enclosures that are suitable for washdown environments, which protect equipment to an ingress protection category of IP 69K. As the temperature rises due to the summer months or random heat waves throughout the year, internal temperature parameters can be breached. In turn, the life expectancy of the equipment within the enclosures is reduced and the probability of an unexpected system failure increases drastically. Care needs to be taken when selecting climate control equipment to ensure it’s suitably robust to handle the rigours of the environment in which it’s situated. Below are some key aspects to consider when reviewing your climate control solutions. Is your solution the right one for your environment? The type of product being processed and/ or the location of the equipment on site are likely to have a heavy influence on the suitability of your climate control system. 1) Let’s consider the ambient temperature of your facility. If it remains lower, through- out the entire year, than the desired temperature inside the enclosure then fan-and-filter units and air-to-air heat exchangers can be very effective. They use ambient air to remove heat energy from the enclosure and dissipate it into the local environment. If the ambient temperature rises above the required internal temperature then units with active cooling circuits must be used. Wall/roof-mounted cooling units use refrig- erant as an intermediate medium to remove the excess heat from enclosures, trans- ferring it to the surrounding ambient air, and maintain the desired conditions. Enclosure Cooling Whatever the scale...... ......we have the solution ENCLOSURES POWER DISTRIBUTION CLIMATE CONTROL