What Happens When We Use Boiler At Higher Altitude

• A boiler designed to get 5000 kg/hr steam for & at,100-degree Celcius at mean water level won't offer a similar quantity of steam if shifted to an elevated place. it'll provide less steam.

• Due to reduced air density at higher altitude, it'll consume a similar volume of air however won't consume a similar mass of air.

• This leads to less fuel consumption & less steam generation rate.

• Due to the reduction of mass flow of gases through tubes of a boiler, convective heat transfer also decreases that more leads to reduced evaporation rates.

Combustion could be a method that desires the constant air provide for its survival, however as we move up the world i.e. at higher altitudes, things aren’t a similar as they used to be at sea level. The oxygen content in the air reduces exponentially. not like body, a boiler doesn’t acclimatise itself to this shortage.

Though the Blower provides a similar volume of air the reduced density of air (oxygen to be specific) results in reduced combustion, lesser fuel consumption therefore reduced steam generation.

So, it may be concluded that a boiler at its rated capability, won’t carry on the promise of desired output at elevated levels. So, one ought to concentrate on the mass rate of flow of air equipped for combustion rather than volumetrical flow. knowledge of De-rating issue will help in quantifying the reduced output of the Boiler. a correct volumetrical flow of the Blower ought to be chosen as per the conditions.

At higher altitudes, atmospherical temperature decreases, thus to extend the potency of the boiler one should concentrate on increasing the temperature of feed water and air. Also, the correct insulation of all the instrumentation should be ensured in order to prevent the heat losses due to convection and radiation.