Total Energy Savings from Boiler Burners

　　Some boiler burner producers tout high efficiency from gas savings done through high turndown blended with low extra air. And in instances the place the process, or boiler load, requires giant swings then excessive turndown is very important. The much less biking (turning off and on) your boiler has to do, then the more money you will save and the lower your preservation charges will be. And is low excess air important? Of route it is! High excess air ability you are wasting cash heating up all that “excess” air. Reducing excess air across your whole turndown range, down to as low as 10% of the firing rate, sounds like a super plan. Where do we sign up? But there are trade-offs in attaining this objective.WaYBoiler Burner

　　Usually, the only way to achieve low excess air throughout a excessive turndown range, 10 to 1 for example, is to have a high stress drop throughout the burner combustion head. And the solely way to reap that high pressure drop is to use a large combustion air fan and motor. With these necessities comes the tradeoff, as using the larger fan and motor will increase each the initial price of the tools and the running price that comes in the shape of higher electrical usage.WaYBoiler Burner

　　Learn how Webster's JBE(X) high turndown boiler maximizes total energy savings.WaYBoiler Burner

　　Consulting engineers responsible for specifying excessive efficiency boiler burners should be conscious that fuel effectivity is solely a small part of the complete story. In fact, a tons higher savings can be achieved through reduction of motor horsepower to gain the same burner firing rate. While the excess air discount isn’t pretty as high, the total electricity financial savings resulting from O2 and motor horsepower reduction is significantly greater.WaYBoiler Burner

　　Let’s appear at the story of two burners, Burner A and Burner B utilized to a 600HP scotch-marine boiler. Both burners have a 10 to 1 turndown ratio to minimize cycling, but have the following working characteristics:WaYBoiler Burner

　　Burner A continues 3% O2 stages from 100% down to 10% of the firing rate the use of a 25HP blower motor.WaYBoiler Burner

　　Burner B continues 3% O2 stages from a hundred percent down to 20% of the firing charge the usage of a 15HP blower motor.WaYBoiler Burner

　　So, the only difference in fuel financial savings between the two burners is at the very lowest firing rates, beneath 20% of the excessive hearth rate. Therefore, the gas financial savings for Burner A solely occur when the burner is firing at 10% of the excessive fire rate. Even if we make the unrealistic assumption that Burner A fires at the 10% rate twenty-four hours per day, three-hundred sixty-five days per year, the fuel savings would only be roughly $350 per year. Obviously, the burner will no longer run at this low firing rate for such a lengthy period, so this savings figure is drastically over-stated.WaYBoiler Burner

　　On the other hand, because Burner B is the usage of a a great deal smaller motor, the electrical financial savings over the identical time length and running parameters would equate to about $7,000. So the Total Energy Savings is about $6,650 in favor of Burner B, and that range does no longer include the higher initial price of Burner A, or the reality that Burner A will not run at the 10% firing price all day, every day, and therefore will likely now not obtain even the $350 in gasoline savings.WaYBoiler Burner

　　Not all burner producers offer a high turndown, low motor horsepower burner series. One such producer achieves this by using the usage of a high-swirl firing head technology with low pressure drop across the burner combustion head, coupled with a quite efficient in-line combustion air fan to furnish best mixing of the fuel and air and lower its motor horsepower requirements. This mixture approves the burner to operate with low excess air throughout a giant running range. Less excess air skill multiplied gas efficiency, and excessive efficiency mixed with excessive turndown reduces warmness losses in the boiler that can end result from cycling when a burner is stopping and starting. This kind of burner will furnish quickly payback and the first-rate possible return on its investment via virtue of complete strength savings, no longer simply gas savings.WaYBoiler Burner

　　All applications can gain from burners that assist improve whole strength savings. In particular, hospitals, schools and universities are in particular well applicable and signify the sorts of services that regularly depend on limited funding and, or ought to make the most of their strength budgets. Professional tools representatives and producers can supply payback evaluation and a comparison of the proposed combustion equipment based on O2 levels, turndown capabilities, and motor HP.WaYBoiler Burner