Runaround System Explained

As HVAC professionals, understanding the intricacies of various systems is critical for optimizing performance and energy efficiency. One relatively less common but highly effective system is the runaround system. This regenerative-type closed secondary system is designed to maximize heat transfer while minimizing energy consumption.

What is a Runaround System?

A runaround system involves a continuously circulated fluid that functions as an intermediary between a primary heating or cooling source and the targeted application. Essentially, it absorbs heat from the primary system fluid at one location and transfers that heat to the primary system fluid at a different location. This process ensures efficient thermal energy utilization and improves overall system performance.

How Does It Work?

The mechanism of the runaround system relies on a loop that includes:

• Heat Absorber: At this point, the fluid absorbs heat from the hot primary system fluid. This could take place in various components, such as heat exchangers.
• Pump: A pump circulates the heat transfer fluid through the system, ensuring that the heat collected is efficiently moved.
• Heat Releaser: At this stage, the absorbed heat is released back into the primary system fluid, providing the necessary thermal energy without direct contact between the two fluids.

Benefits of Runaround Systems

Implementing a runaround system has several advantages:

• Energy Efficiency: By redistributing thermal energy, these systems significantly reduce energy usage in HVAC applications.
• Flexibility: Runaround systems can be tailored to various applications, making them suitable for different types of buildings and climates.
• Reduced Maintenance: With fewer moving parts in primary systems, maintenance becomes easier and less frequent.

Applications

Runaround systems are particularly effective in large commercial buildings, industrial processes, and any application where heat recovery is beneficial. They are commonly used in:

• Hospital HVAC systems
• Data centers
• Agricultural buildings
• Laboratories

Conclusion

Incorporating a runaround system into your HVAC design not only enhances energy efficiency but also contributes to sustainability efforts. As HVAC professionals, staying informed about the latest technologies and systems will help you provide optimal solutions for your clients while reducing overall operational costs.

For further information on adopting runaround systems and integrating them into your projects, feel free to reach out or subscribe to our updates.