Calculate the boiler efficiency for a boiler given the following conditions:Composition of solid fuel by mass: C-84%, H=4.5% and O=4.0%, the rest beingincombustibles.Composition of air by mass: 0=23% and N=77%Calorific value of fuel: 33.9 MJ/ kgAmount of excess air in combustion: 85%Fluegas temperature: 315,5 °CAmbient temperature: 32.2 °CSpecific heat capacity of flue gases: 1.005 kJ/kg KRadiative/convective losses: 2.0%Blowdown and other losses: 2.5%Due to import restrictions during COVID-19 lock-down, coal of poorer quality is used in theabove boiler. Discuss briefly TWO sources of pollution and indicate FOR EACH source ONErequired method of controlling the pollution.

Emanations from ICI boilers are a work of the sort and amount of essential fuel burned within the…

Answered: above boiler. Discuss briefly TWO…

above boiler. Discuss briefly TWO sources of pollution and indicate FOR EACH source ONE required method of controlling the pollution.

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter28: Special Refrigeration Applications

Section: Chapter Questions

Problem 2RQ

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Concept explainers

Classification of types of corrosion

Corrosion is described as the process in which a certain element is degraded or deteriorated due to the presence of multiple chemicals in the surrounding. Generally, corrosion happens if all the subatomic particles on a metallic object are oxidized, for example, rust on iron structures. In air or water, metals lose electrons to other particles (like oxygen), leading to the formation of an oxide with the metal.

Question

Calculate the boiler efficiency for a boiler given the following conditions:
Composition of solid fuel by mass: C-84%, H=4.5% and O=4.0%, the rest being
incombustibles.
Composition of air by mass: 0=23% and N=77%
Calorific value of fuel: 33.9 MJ/ kg
Amount of excess air in combustion: 85%
Flue
gas temperature: 315,5 °C
Ambient temperature: 32.2 °C
Specific heat capacity of flue gases: 1.005 kJ/kg K
Radiative/convective losses: 2.0%
Blowdown and other losses: 2.5%
Due to import restrictions during COVID-19 lock-down, coal of poorer quality is used in the
above boiler. Discuss briefly TWO sources of pollution and indicate FOR EACH source ONE
required method of controlling the pollution.

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