Questions for November 6, 2017; replies can earn 0–6 points (no scoring for replies sent more than 1 day after posting). Thank you for your replies

The heat released when fuel per unit weight or volume burns completely is referred to as the calorific value of the fuel, with units of J/kg or J/Nm3; liquid fuels are usually expressed in terms of their calorific value on a weight basis； Gaseous fuels are usually expressed in terms of their volumetric heat value. The calorific value is divided into high and low calorific values, depending on the state of moisture in the fuel products; the high calorific value refers to the sum of the heat of combustion of the fuel and the latent heat of condensation of water vapor in the combustion products ； The low calorific value only represents the heat of combustion of the fuel, excluding the latent heat of condensation of water vapor. Obviously, for the same fuel, its high calorific value is greater than its low calorific value.

The heat released when fuel per unit weight or volume burns completely is referred to as the calorific value of the fuel, with units of J/kg or J/Nm3; liquid fuels are usually expressed in terms of their calorific value on a weight basis； Gaseous fuels are usually expressed in terms of their volumetric heat value. The calorific value is divided into high and low calorific values, depending on the state of moisture in the fuel products; the high calorific value refers to the sum of the heat of combustion of the fuel and the latent heat of condensation of water vapor in the combustion products ； The low calorific value only represents the heat of combustion of the fuel, excluding the latent heat of condensation of water vapor.

The heat released when fuel per unit weight or volume burns completely is referred to as the calorific value of the fuel, with units of J/kg or J/Nm3; liquid fuels are usually expressed in terms of their calorific value on a weight basis； Gaseous fuels are usually expressed in terms of their volumetric heat value. The calorific value is divided into high and low calorific values, depending on the state of moisture in the fuel products; the high calorific value refers to the sum of the heat of combustion of the fuel and the latent heat of condensation of water vapor in the combustion products ； The low calorific value only represents the heat of combustion of the fuel, excluding the latent heat of condensation of water vapor. Obviously, for the same fuel, its high calorific value is greater than its low calorific value. In the calculation of heating furnace combustion and fuel consumption, since the moisture in the combustion products is usually released into the atmosphere in gaseous form, a lower calorific value should be used as the basis for calculation. In the estimation of fuel oil consumption for heating furnaces, 10,000 kcal/kg of fuel (41.9*103 J/kg of fuel) is often used as the low calorific value of the fuel.

The heat released when fuel per unit weight or volume burns completely is referred to as the calorific value of the fuel, with units of J/kg or J/Nm3; liquid fuels are usually expressed in terms of their calorific value on a weight basis； Gaseous fuels are usually expressed in terms of their volumetric heat value. The calorific value is divided into high and low calorific values, depending on the state of moisture in the fuel products; the high calorific value refers to the sum of the heat of combustion of the fuel and the latent heat of condensation of water vapor in the combustion products ； The low calorific value only represents the heat of combustion of the fuel, excluding the latent heat of condensation of water vapor. Obviously, for the same fuel, its high calorific value is greater than its low calorific value.

The heat released when fuel per unit weight or volume burns completely is referred to as the calorific value of the fuel, with units of J/kg or J/Nm3; liquid fuels are usually expressed in terms of their calorific value on a weight basis； Gaseous fuels are usually expressed in terms of their volumetric heat value. The calorific value is divided into high and low calorific values, depending on the state of moisture in the fuel products; the high calorific value refers to the sum of the heat of combustion of the fuel and the latent heat of condensation of water vapor in the combustion products ； The low calorific value only represents the heat of combustion of the fuel, excluding the latent heat of condensation of water vapor. Obviously, for the same fuel, its high calorific value is greater than its low calorific value. In the calculation of heating furnace combustion and fuel consumption, since the moisture in the combustion products is usually released into the atmosphere in gaseous form, a lower calorific value should be used as the basis for calculation. In the estimation of fuel oil consumption for heating furnaces, 10,000 kcal/kg of fuel (41.9*103 J/kg of fuel) is often used as the low calorific value of the fuel.

The heat released when fuel per unit weight or volume burns completely is referred to as the calorific value of the fuel, with units of J/kg or J/Nm3; liquid fuels are usually expressed in terms of their calorific value on a weight basis； Gaseous fuels are usually expressed in terms of their volumetric heat value. The calorific value is divided into high and low calorific values, depending on the state of moisture in the fuel products; the high calorific value refers to the sum of the heat of combustion of the fuel and the latent heat of condensation of water vapor in the combustion products ； The low calorific value only represents the heat of combustion of the fuel, excluding the latent heat of condensation of water vapor. Obviously, for the same fuel, its high calorific value is greater than its low calorific value. In the calculation of heating furnace combustion and fuel consumption, since the moisture in the combustion products is usually released into the atmosphere in gaseous form, a lower calorific value should be used as the basis for calculation. In the estimation of fuel oil consumption for heating furnaces, 10,000 kcal/kg of fuel (41.9*103 J/kg of fuel) is often used as the low calorific value of the fuel.

The heat released when fuel per unit weight or volume burns completely is referred to as the calorific value of the fuel, with units of J/kg or J/Nm3; liquid fuels are usually expressed in terms of their calorific value on a weight basis； Gaseous fuels are usually expressed in terms of their volumetric heat value. The calorific value is divided into high and low calorific values, depending on the state of moisture in the fuel products; the high calorific value refers to the sum of the heat of combustion of the fuel and the latent heat of condensation of water vapor in the combustion products ； The low calorific value only represents the heat of combustion of the fuel, excluding the latent heat of condensation of water vapor. Obviously, for the same fuel, its high calorific value is greater than its low calorific value. In the calculation of heating furnace combustion and fuel consumption, since the moisture in the combustion products is usually released into the atmosphere in gaseous form, a lower calorific value should be used as the basis for calculation. In the estimation of fuel oil consumption for heating furnaces, 10,000 kcal/kg of fuel (41.9*103 J/kg of fuel) is often used as the low calorific value of the fuel.

The heat released when fuel of a certain unit weight or volume burns completely is known as the calorific value of the fuel. Its corresponding unit is MJ/kg or MJ/Nm3. Liquid fuels are usually expressed in terms of their calorific value per unit weight ； Gaseous fuels are usually expressed in terms of their volumetric heat value.

The heat released when fuel per unit weight or volume burns completely is referred to as the calorific value of the fuel, with units of J/kg or J/Nm3; liquid fuels are usually expressed in terms of their calorific value on a weight basis； Gaseous fuels are usually expressed in terms of their volumetric heat value. The calorific value is divided into high and low calorific values, depending on the state of moisture in the fuel products; the high calorific value refers to the sum of the heat of combustion of the fuel and the latent heat of condensation of water vapor in the combustion products ； The low calorific value only represents the heat of combustion of the fuel, excluding the latent heat of condensation of water vapor. Obviously, for the same fuel, its high calorific value is greater than its low calorific value. In the calculation of heating furnace combustion and fuel consumption, since the moisture in the combustion products is usually released into the atmosphere in gaseous form, a lower calorific value should be used as the basis for calculation. In the estimation of fuel oil consumption for heating furnaces, 10,000 kcal/kg of fuel (41.9*103 J/kg of fuel) is often used as the low calorific value of the fuel.

The heat released when fuel per unit weight or volume burns completely is referred to as the calorific value of the fuel, with units of J/kg or J/Nm3; liquid fuels are usually expressed in terms of their calorific value on a weight basis； Gaseous fuels are usually expressed in terms of their volumetric heat value. The calorific value is divided into high and low calorific values, depending on the state of moisture in the fuel products; the high calorific value refers to the sum of the heat of combustion of the fuel and the latent heat of condensation of water vapor in the combustion products ； The low calorific value only represents the heat of combustion of the fuel, excluding the latent heat of condensation of water vapor. Obviously, for the same fuel, its high calorific value is greater than its low calorific value.