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为夏季准备制造自动化系统

规划气候控制

Rittal警告制造自动化系统的用户检查它们是否为夏季热量做好了准备,如有必要,安排对其设备进行检查以检查风险。

高温是敏感的电气和电子元件跳闸或甚至故障的最常见原因。

电气设备故障会导致生产中断,这可能会使公司每小时损失数十万英镑。 灾难性设备故障的成本甚至更高,因为这意味着在更换产品的来源和安装时会延长停机时间。

Jason Swann, Rittal’s Product Manager for Climate advises: “Electrical equipment generates lots of heat. Add to this the ambient heat from the rising summer temperatures and your enclosure will start to reach a critical point of overheating without sufficiecnt cooling. What would you do if the equipment that manages your production line – your PLCs, drives and controls – failed due to inadequate or inappropriate cooling? Can you afford to take the risk.”

Inverter drives are used within electrical equipment because they are very effective at reducing the amount of energy used – which means lower production costs. Assuming an efficiency of 97 per cent, a 250kW drive can produce up to 7.5kW of heat, much of which is retained inside the enclosure in which it’s installed. Therefore without adequate cooling heat will rise.

The life expectancy of components is hugely affected by excess heat. An electrical component’s life expectancy is reduced by 50 per cent for every 10°C increase in the ambient temperature. So keeping an expensive Inverter drive cool, prelongs its life, reduces the risk of failure and saves you money.

规划气候控制

Rittal提供以下问题列表,以检查是否有可能出现问题:

您的设备是否因高温而脱扣或失灵?
Is this having an impact on production, in that it’s either slowing or stopping completely?
当您在车间走走时,请确保您的外壳感觉很热,
在夏天的高峰期,你的围墙门是否经常打开,你需要大的风扇吹进你的面板来冷却其中的设备吗? 这也带来健康和安全的风险!
过程流体冷却不足导致生产停产时间?
您现有的冷却解决方案能否从健康检查中获益?
Any “yes” responses suggests a thermal survey could be a sensible next step. Rittal’s expert team can provide a RiAssure3 survey and if necessary advise on the best solution.

Jason explains: “A RiAssure3 survey will identify the likely risk of a system overheating. The survey will review any existing cooling solution and determine how suited it is to that particular working environment. If necessary, it will then provide recommendations around remedial action – for example, changes to the system’s service and maintenance regime to help improve its efficiency or the recommendation to invest in different climate control technology.

“Our engineers will always offer their advice from the perspective of functionality, energy efficiency, ease of installation, service and maintenance, based on real-life data measured on site.”

保护控制和自动化设备

Which cooling solution is installed ultimately depends on the amount of heat produced inside the panel and the environment in which it’s installed. It must be specific to a particular application.

主要考虑因素围绕外壳是处于寒冷或炎热的环境中,如果环境干净或肮脏,以及在何种程度上。 条件也可能在工作日,周,月或年的过程中发生变化,因此最终选择适当的冷却解决方案可能并不完全是直截了当的。

Jason continues: “Enclosures that are placed in a cool and clean environment may find fan-and-filter units are more than adequate, given a single device provides more than 4 kW of cooling in ideal conditions. However If the air is dirty, it is still possible to take full advantage of low ambient temperatures by using energy efficient air-to-air heat exchangers to provide any necessary cooling.”

对于需要在外壳内的温度的应用为比它之外时,基于制冷剂溶液可以是最好的选择。

The new Blue e+ cooling unit range from Rittal, with capacities up to 6kW, can operate in ambient temperatures up to 60°C yet also provide free cooling when the external air is cooler due to the innovative use of hybrid technology.

空气对水热交换器可以在更热的条件下使用,并且输送到远程位置的水,其中来自一个单元的高达10kW的热量可以更有效地消散并且对周围环境的温度影响较小。

在进一步的信息 www.rittal.co.ukwww.friedhelm-loh-group.com 或在Twitter上@rittal_ltd。

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