Gaseous hydrogen enters a constant-area pipe with a temperature of 300 K, and exits with a temperature of 650 K with no mass accumulation in the pipe. Assuming the hydrogen is an ideal gas and that it has a constant specific heat, how much heat is transferred per unit mass to the hydrogen as it passes through the pipe

ΔQ = 5054 KJ/kg.K

Explanation:

First of all, we will find the value of the specific heat of hydrogen. Since it is mentioned that the value of specific heat is constant between 300 K and 650 K. Therefore, we can take it to be the average of values at these two temperatures.

C = 14.44 KJ/ kg.K

Now, the heat absorbed is given by the following formula:

where,

T_f = Final Temperature = 650 K

T_i = Initial Temperature = 300 K

ΔQ = 5054 KJ/ kg.K

the answer is a)

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