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Which one of the following gaseous fuels does not have different higherand lower calorific values?
- a)Methane
- b)Ethane
- c)Carbon monoxide
- d)Hydrogen
Correct answer is option 'C'. Can you explain this answer?
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Which one of the following gaseous fuels does not have different highe...
Since CO does not have hydrogen content; the HCV and LCV are same
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Which one of the following gaseous fuels does not have different highe...
Gaseous Fuels and Calorific Values
Gaseous fuels are those fuels that are in gaseous form at normal atmospheric pressure and temperature. They are widely used in various industries for heating, cooking, and power generation. The calorific value of a fuel is the amount of heat energy released on complete combustion of 1 kg of the fuel. It is measured in units of energy per unit of mass, such as joules per kilogram (J/kg) or British thermal units per pound (BTU/lb). The higher calorific value (HCV) and the lower calorific value (LCV) are the two main measures of the calorific value of a fuel.
HCV and LCV
The higher calorific value (HCV) of a fuel is the amount of heat energy released on complete combustion of 1 kg of the fuel at constant pressure and with the products of combustion returned to the original temperature of the fuel. The lower calorific value (LCV) of a fuel is the amount of heat energy released on complete combustion of 1 kg of the fuel at constant volume and with the products of combustion allowed to cool to the initial temperature of the fuel.
Gaseous Fuels and HCV/LCV
Methane, ethane, and hydrogen are gaseous fuels that have different higher and lower calorific values. Methane has an HCV of 55.5 MJ/kg and an LCV of 50.0 MJ/kg, ethane has an HCV of 51.9 MJ/kg and an LCV of 47.1 MJ/kg, and hydrogen has an HCV of 141.8 MJ/kg and an LCV of 120.2 MJ/kg.
Carbon monoxide is not a gaseous fuel that has different higher and lower calorific values. This is because carbon monoxide is not a hydrocarbon and does not contain hydrogen. Its calorific value is independent of the initial and final temperatures of combustion because it forms only one product of combustion, carbon dioxide. The calorific value of carbon monoxide is about 10.1 MJ/kg. Therefore, the correct answer is option 'C'.
Gaseous fuels are those fuels that are in gaseous form at normal atmospheric pressure and temperature. They are widely used in various industries for heating, cooking, and power generation. The calorific value of a fuel is the amount of heat energy released on complete combustion of 1 kg of the fuel. It is measured in units of energy per unit of mass, such as joules per kilogram (J/kg) or British thermal units per pound (BTU/lb). The higher calorific value (HCV) and the lower calorific value (LCV) are the two main measures of the calorific value of a fuel.
HCV and LCV
The higher calorific value (HCV) of a fuel is the amount of heat energy released on complete combustion of 1 kg of the fuel at constant pressure and with the products of combustion returned to the original temperature of the fuel. The lower calorific value (LCV) of a fuel is the amount of heat energy released on complete combustion of 1 kg of the fuel at constant volume and with the products of combustion allowed to cool to the initial temperature of the fuel.
Gaseous Fuels and HCV/LCV
Methane, ethane, and hydrogen are gaseous fuels that have different higher and lower calorific values. Methane has an HCV of 55.5 MJ/kg and an LCV of 50.0 MJ/kg, ethane has an HCV of 51.9 MJ/kg and an LCV of 47.1 MJ/kg, and hydrogen has an HCV of 141.8 MJ/kg and an LCV of 120.2 MJ/kg.
Carbon monoxide is not a gaseous fuel that has different higher and lower calorific values. This is because carbon monoxide is not a hydrocarbon and does not contain hydrogen. Its calorific value is independent of the initial and final temperatures of combustion because it forms only one product of combustion, carbon dioxide. The calorific value of carbon monoxide is about 10.1 MJ/kg. Therefore, the correct answer is option 'C'.
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Which one of the following gaseous fuels does not have different higherand lower calorific values?a)Methaneb)Ethanec)Carbon monoxided)HydrogenCorrect answer is option 'C'. Can you explain this answer?
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