Chemical Engineering - Chemical Engineering Basics - Discussion

12. 

A high pressure boiler generates steam at a pressure greater than __________ kg/cm2 .

[A]. 10
[B]. 30
[C]. 50
[D]. 80

Answer: Option D

Explanation:

No answer description available for this question.

Giri said: (May 31, 2013)  
It all depends upon the industries as most of the industries called hp steam of 40 barg.

Arnab said: (Mar 1, 2015)  
It varies depending on the pressure required in turbines and process usage.

Femi said: (Apr 22, 2016)  
Options B through D is high enough to describe a high-pressure boiler generating steam.

Praveen said: (May 23, 2016)  
A boiler is called a high-pressure boiler when it operates with a steam pressure of 80 bars. The high-pressure boilers are widely used for power generation in thermal power plants.

In a high-pressure boiler, if the feed-water pressure increases, the saturation temperature of water rises and the latent heat of vaporization decreases.

The feed water can be heated to saturation of temperature in the economizer with the help of waste heat. Recovery from the exhaust gases escaping to the chimney.

Then the boiler supplies only latent heat of vaporization and superheat. Thus, a boiler operation at high pressure will require less heat addition for steam generation.

Kailas said: (Jun 6, 2017)  
Steam generation depends on the capacity of boiler & requirement of temperature against pressure.

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