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Boiler Turndown Ratio - How Does this Affect You?

A high turndown ratio is important for boilers that are required to operate over a wide range of capacities. A boiler with a higher turndown ratio will usually handle fluctuating loads more efficiently than one with lower turndown.

Here's Why:

A Boiler's burner will modulate or "turn down" as the demand for hot water or steam decreases, in an attempt to meet the required load. The turndown ratio tells you the minimum output the boiler can achieve before turning off and then cycling on and off frequently.

If the demand goes below the burner's minimum turndown, the boiler will cycle off until there's more demand. This results in the system cycling on, running for a brief period and then cycling off again. Every time this happens, the boiler must go through a pre-purge, a firing interval and then a post-purge. This is extremely inefficient.

How an Incorrect Turndown Ratio

Affects Boiler Efficiency

Energy Loss & Waste

Inconsistent Steam Pressure

Excessive Wear on Components

Premature Equipment Failure

Modular Systems For Fluctuating Load Demands

A Modular or Hybrid system can be a good solution for meeting varying load demands. Using a mix of different types and sizes of boilers allows for larger boiler to handle high load needs while a smaller, more efficient boiler covers lower demands. And, each boiler can be turned down when not in use.


Your Custom Superior Boiler Solution!

Many take heating systems for granted, not realizing what goes into them. At Boilersource, we go beyond the basics to find YOUR optimal solution. We find the right combination that will fit your company's needs.


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