What is a boiler cycle?
Boiler “short cycling” occurs when an oversized boiler quickly satisfies process or space heating demands, and then shuts down until heat is again required. Process heating demands can change over time. A boiler cycle consists of a firing interval, a post-purge, an idle period, a pre- purge, and a return to firing.Click to see full…
Boiler “short cycling” occurs when an oversized boiler quickly satisfies process or space heating demands, and then shuts down until heat is again required. Process heating demands can change over time. A boiler cycle consists of a firing interval, a post-purge, an idle period, a pre- purge, and a return to firing.Click to see full answer. Simply so, how long should boiler cycle?As a general rule, the combination of boiler run time and off time should never be any less than 10 minutes. This principal goes back to our earlier blog on Specific Heat. Remember, for every Btu that you add to a pound of water, you will increase its temperature by 1 degree.Subsequently, question is, what does a boiler do? The function of a boiler is to either produce hot water or steam. Hot water boilers heat water for the purpose of domestic or commercial heating and hot water supply. Steam boilers generate steam in order to power turbines for power generation and various other industrial heating applications. People also ask, why does my boiler cycle on and off? Fire only to the connected piping and radiation load – no more and no less. Wet steam also can cause short-cycling. The steam leaves the boiler, the pressuretrol hits its high limit, the steam rapidly condenses and causes the burner to turn back on. Dirty water is another common cause of burner short-cycling.What is boiler and its classification?There are two general types of boilers: ”fire-tube” and ”water-tube”. Boilers are classified as “high-pressure” or “low-pressure” and “steam boiler” or “hot water boiler.” Boilers that operate higher than 15 psig are called “high-pressure” boilers.
