This problem uses the Peng$-$Robinson property calculator to evaluate the inlet$/$outlets of a heat

exchanger and find the molar flow ratio of stream B to stream A$.$ The stream A consists of water and

is at a pressure of $0\mathrm{.}24$MPa and it enters at $724K$ and leaves at $526K.$ Stream B is nitrogen gas at a

pressure of $1\mathrm{.}2$MPa and enters at a temperature of $342K$ and exits at $455K.$ The reference state is

$H_R=0$ and $S_R=0$ for the real fluid equilibrium state of aggregation at $298\mathrm{.}15K,0\mathrm{.}1$MPa.

Note: One of your specified streams may be water. The Peng$-$Robinson EOS is not particularly

accurate for water, but if you are assigned water, you are asked here to use the Peng$-$Robinson EOS

as a learning tool for an approximate calculation.

A$)$ What is the enthalpy of water entering the heat exchanger in stream $A(\frac{J}{m}ol)?$

Tries $\frac{0}{4}$

B$)$ What is the enthalpy of water exiting the heat exchanger in stream $A(\frac{J}{m}ol)?$

Tries $\frac{0}{4}$

C$)$ What is the enthalpy of nitrogen gas entering the heat exchanger in stream $B(\frac{J}{m}ol)?$

Tries $\frac{0}{4}$

D$)$ What is the enthalpy of nitrogen gas exiting the heat exchanger in stream $B(\frac{J}{m}ol)?$