A boiler turndown ratio refers to the width of the operational range of a boiler/burner and is defined as the ratio of the maximum capacity to minimum capacity. Are you familiar with a boiler turndown ratio and why it matters? Let’s review some key points.
Benefits of a High Boiler Turndown Ratio
- Better temperature/pressure control.
- Increased efficiency and reduced fuel costs. Lower turndown means the unit will cycle on and off more often, costing you more in fuel.
- Reduced wear and tear on components.
- Reduced maintenance costs and downtime.
- Reduced chances for flame failure.
- Process control is enhanced with a high turndown.
For example, a device with a maximum output of 10 BHP (boiler horsepower) and a minimum output of 2 BHP has a turndown ratio of 5. This would be referred to as five to one (5:1). Think of it like hitting the gas in your sports car till it gets to 100 mph, and then you take your foot off the gas until you reach a minimum speed of 50 (2:1) or 20 (5:1). As long as you have your minimum steam requirements, which one is going to use less fuel and cycle on and off less often?
How Can We Help?
The ability to obtain high turndown ratios is a function of the burner. A turndown ratio of 5:1 is an industry high that we offer at Bay City Boiler.
At Bay City Boiler & Engineering, we’re here to help brewers with steam calculations, selecting the most efficient commercial boiler, or fixing that old boiler or burner that is just not running as it should. To schedule an appointment, contact us at (510) 786-3711. How can we help?