__The Heating Value of a Gas:__

✔ The heating value of a gas is defined as the thermal energy per unit volume of the gas.

✔ It is expressed in

**Btu/**

**ft**

^{3}✔ For natural gas, it is approximately in the range of

**900 to 1200 Btu/**

**ft**

^{3}✔ There are two heating values used in the industry. These are the lower heating value (LHV) and higher heating value (HHV).

✔ For a gas mixture, the term gross heating value is used.

✔ It is calculated based upon the heating values of the component gases and their mole fractions using the following equation:

**H _{m} = Σ(y_{i}H_{i})**

Where,

H

H

_{m}= Gross heating value of Mixture, Btu/ft^{3}y_{i }= Mole fraction or percent of gas component, iH

_{i }= Heating Value of gas component, Btu/ft^{3}
## No comments:

## Post a Comment