ME $227$ Assignment

Textbook #$3\mathrm{.}22$

Problem Statement

A piston$-$cylinder assembly contains a two$-$phase liquid$-$vapour mixture of $H_{2}O$ at $200lb\frac{f}{i}{n}^2$

with a quality of $80\%.$ The mixture is heated and expands at constant pressure until a final

temperature of $480F$ is reached. Determine the work for the process, in Btu per lb of $H_{2}O$

present.

Answer: $30\mathrm{.}3Bt\frac{u}{l}b$