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mathew		 Can anyone tell me which kind of the best boiler [the best efficiency and less cost] to select for HVAC use, View All
Can anyone tell me which kind of the best boiler [the best efficiency and less cost] to select for HVAC use,thathas to produce 500,000 to 700,000 btu/hr ?
1 month ago - 11 months left to answer. - 1 response - Report Abuse
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michale
 Boiler efficiency is defined as how much of the heating value of the fuel is being converted to useful heat.

* Condensing boilers absorb more heat from combustion gases, allowing the water vapor to condense and therefore providing increased efficiency. Any hydrocarbon fuel burned in a boiler, whether it is propane, natural gas, or fuel oil, produces water vapor during the combustion process.
* Conventional boilers are non-condensing boilers with materials that cannot tolerate the corrosive properties of condensing flue or stack gases. Conventional boilers operate around 80 percent efficiency, compared to over 90 percent efficiency for condensing efficient boilers.

Other factors also influence boiler efficiency, including boiler shell losses, piping losses, and cycling losses.
Fire tube and water tube

Boilers use water to absorb heat from a burned fuel/air mixture. Boilers can produce steam or hot water. The two most common types of boilers are fire tube and water tub

1 month ago

Source: http://www.alliantenergy.com/docs/groups/public/documents/pub/p012392.hcsp


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