DO YOU KNOW WHAT HAPPENS WHEN WE USE BOILER AT HIGHER ALTITUDE

A boiler designed to generate 5000 kg/hr steam for & at 100 ⁰C at mean sea level will not give the same quantity of steam if shifted to an elevated place. It will give less steam.
Due to decreased air density at higher altitude the boiler will consume same volume of air but will not consume same mass of air.
This results in less fuel consumption & less steam generation rate.
Due to reduction of mass flow of gases through tubes of boiler, convective heat transfer also decreases which further results in reduced evaporation rates.

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