The volumetric analysis of mixture of gases is 30 percent oxygen, 40 percent nitrogen, 10 percent carbon dioxide, and 20 percent methane. this mixture is heated from 20°c to 200°c while flowing through a tube in which the pressure is maintained at 150 kpa. determine the heat transfer to the mixture per unit mass of the mixture.

Explanation:

Hello,

In this case, the transferred heat to the mixture is given by the addition among each compound's specific enthalpies:

Now, each specific enthalpy is given by the following equation:

As long as there is a large difference between the initial and the final temperature. In such a way, the shown below polynomial for the Cp which is given kJ/kmol*K is considered and subsequently integrated:

Now, the specific enthalpy is computed for each component considering the temperatures in Kelvin:

Now, we convert them per unit of mass as:

Finally, by considering the volumetric percentages, we compute the heat transferred to mixture:

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