Answer:
inlet temperature is [tex]170^{\circ}C [/tex]be so that no water will condense inside the pipe
Explanation:
Assumptions,
- No change in the kinetic energy
- Steady state
- single inlet and exit flow
The energy equation is given by
[tex]q+h_i=h_e+gZ_e[/tex]
No condensation means
[tex]h_{e}=h_{g} \text { at } 125k P a=2685.4 \mathrm{kJ} / \mathrm{Kg}[/tex]
[tex]h_i=h_e+gZ_e-q[/tex]
Substituting the values,
=[tex]2685.4+\frac{9.807 \times 300}{1000} -(-110)[/tex]
=[tex]2685.4+\frac{2942.1}{1000} -(-110)[/tex]
=[tex]2685.4+ 2.9421 -(-110)[/tex]
=[tex]2685.4+ 2.9421 + 110[/tex]
=2798.34 kJ/kg
At 200 kPa T[tex]\sim[/tex] 170
