- #1

sjh94

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## Homework Statement

If 5% of the heat available for steam production is lost to the

atmosphere, determine the amount of steam raised per hour when the

total flow of flue gases is 1400 kmol h-1.

qmH = 1400 kmol h-1

Flue gas temperatures:

Inlet = 1832°C

Outlet = 300°C

Water temperature:

Inlet = 90°C

Steam produced at 5 barg = 159°C

Latent Heat of Steam @ 5 barg = 2085 kJkg-1 (hfg)

Specific heat capacity of water = 4.18 kJ kg-1 k-1 (Cpc)

**2. The attempt at a solution:**

The specific heat capacity of the flue gas is not given, therefore I am missing 'cph' and cannot use the equation below:

If I could work out the heat transfer rate then I would be able to use the equation below to find the the mass flow of the steam??

Any help would be much appreciated.

Thanks.