Leaks and Piping: Why the Distribution Network Decides the Bill

In the world of industrial compressed-air systems, the distribution network plays a critical role in determining overall efficiency and cost. Leaks and undersized or outdated piping can significantly increase energy consumption and maintenance costs, often without operators realising the extent of the problem. This article explores how to identify and address these issues to optimise the performance of your compressed-air system.

The Cost of Leaks

Leaks in compressed-air systems are a common and often overlooked issue. These leaks can occur at various points in the distribution network, including joints, valves, and fittings. The impact of leaks is twofold: they waste compressed air, which is a costly resource, and they increase the load on the compressor, leading to higher energy consumption. In most plants, leaks can account for up to 25% of the total compressed-air demand, making them a significant factor in energy bills.

Identifying Leaks

Identifying leaks in a compressed-air system requires a systematic approach. One common method is to perform an acoustic survey using ultrasonic leak detectors. These devices can pinpoint the location of leaks based on the sound they produce. Another method involves monitoring the pressure drop across the system and comparing it to historical data. A sudden increase in pressure drop can indicate the presence of a leak. Additionally, visual inspections can help identify obvious leaks, such as air escaping from visibly damaged or improperly sealed connections.

• Acoustic Survey: Use ultrasonic leak detectors to identify and locate leaks.
• Pressure Drop Analysis: Monitor and compare pressure drop data over time to detect anomalies.
• Visual Inspection: Regularly inspect the system for visible signs of leaks.

The Impact of Undersized Piping

Undersized or outdated piping can lead to significant inefficiencies in compressed-air systems. When the piping is too small, it restricts the flow of air, causing pressure drops and reducing the overall performance of the system. This can result in increased energy consumption as the compressor works harder to maintain the required pressure. In addition, undersized piping can lead to higher maintenance costs due to increased wear and tear on the system components.

• Pressure Drops: Undersized piping can cause excessive pressure drops, reducing system efficiency.
• Increased Energy Consumption: The compressor must work harder to overcome the resistance, leading to higher energy bills.
• Higher Maintenance Costs: Increased wear and tear on system components due to higher flow resistance.

When Super-Pipe or Ring-Main Pays Off

In some cases, upgrading the distribution network with super-pipe or a ring-main configuration can provide significant benefits. Super-pipe, which is typically larger diameter piping, can reduce pressure drops and improve the overall efficiency of the system. A ring-main configuration, where the main pipe forms a loop, can also help balance the air distribution and reduce the impact of leaks and pressure drops.

• Super-Pipe: Larger diameter piping can reduce pressure drops and improve system efficiency.
• Ring-Main Configuration: A looped main pipe can help balance air distribution and reduce the impact of leaks and pressure drops.

Conclusion

The distribution network in a compressed-air system is a critical component that can significantly impact overall efficiency and cost. Regularly surveying for leaks and ensuring that the piping is properly sized and maintained can help optimise the performance of the system. In some cases, upgrading to super-pipe or a ring-main configuration can provide additional benefits, leading to improved efficiency and reduced costs.

Planning a compressed-air upgrade? [Talk to SIND's engineers](/contact/).