A fuel with high heat release rate will

Fuels and Combustion
A fuel with high heat release rate will

None of these

Require smaller combustion chamber

Have high adiabatic flame temperature

Have high calorific value

None of these

Require smaller combustion chamber

Have high adiabatic flame temperature

Have high calorific value

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Fuels and Combustion
A certain thickness of the coal, if stored unscientifically on soft (katcha) ground having no metallic/concrete flooring gets sunked into the ground, which is termed as the 'carpet loss'. The carpet loss may be of the order of __________ cms.

1 to 2

5 to 15

3 to 4

20 to 40

1 to 2

5 to 15

3 to 4

20 to 40

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Fuels and Combustion
The weathering index of a coal

Is a measure of its size stability, when stored & exposed to weather

Is a measure of its caking tendency

Gives an idea of the fusion temperature of ash

Is related to its calorific value

Is a measure of its size stability, when stored & exposed to weather

Is a measure of its caking tendency

Gives an idea of the fusion temperature of ash

Is related to its calorific value

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Fuels and Combustion
Higher fuel combustion efficiency can not be achieved by

Supplying correct amount of combustion air

Adopting proper fuel firing technique & fuel preparation

Preheating of fuel gases & combustion air

Reducing sulphur content in the fuel

Supplying correct amount of combustion air

Adopting proper fuel firing technique & fuel preparation

Preheating of fuel gases & combustion air

Reducing sulphur content in the fuel

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Fuels and Combustion
A coal with high ash content is undesirable, as

The ash retains the sulphur & phosphorus and thus affects the quality of products in metallurgical furnace apart from increasing the slag volume. Besides, it may fuse and stick to the boiler tubes

The ash in molten condition gets absorbed in the pores of the refractory lining of the furnace and causes its spalling due to different co-efficient of expansion/contraction of the refractory and the

It is abrasive to the coal pulveriser (ie.g. ball mill) and the combustion chamber

All of these

The ash retains the sulphur & phosphorus and thus affects the quality of products in metallurgical furnace apart from increasing the slag volume. Besides, it may fuse and stick to the boiler tubes

The ash in molten condition gets absorbed in the pores of the refractory lining of the furnace and causes its spalling due to different co-efficient of expansion/contraction of the refractory and the

It is abrasive to the coal pulveriser (ie.g. ball mill) and the combustion chamber

All of these

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Fuels and Combustion
__________ of the coal is the basis for Seylor's coal classification.

Calorific value

Proximate analysis

Ultimate analysis

Caking index

Calorific value

Proximate analysis

Ultimate analysis

Caking index

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Fuels and Combustion

Fuels and Combustion A fuel with high heat release rate will

Fuels and Combustion A certain thickness of the coal, if stored unscientifically on soft (katcha) ground having no metallic/concrete flooring gets sunked into the ground, which is termed as the 'carpet loss'. The carpet loss may be of the order of __________ cms.

Fuels and Combustion The weathering index of a coal

Fuels and Combustion Higher fuel combustion efficiency can not be achieved by

Fuels and Combustion A coal with high ash content is undesirable, as

Fuels and Combustion __________ of the coal is the basis for Seylor's coal classification.

Fuels and Combustion
A fuel with high heat release rate will

Fuels and Combustion
A certain thickness of the coal, if stored unscientifically on soft (katcha) ground having no metallic/concrete flooring gets sunked into the ground, which is termed as the 'carpet loss'. The carpet loss may be of the order of __________ cms.

Fuels and Combustion
The weathering index of a coal

Fuels and Combustion
Higher fuel combustion efficiency can not be achieved by

Fuels and Combustion
A coal with high ash content is undesirable, as

Fuels and Combustion
__________ of the coal is the basis for Seylor's coal classification.