What does this mean

The figure below provides steady$-$state data for a throttling valve in series with a heat exchanger. Saturated liquid Refrigerant $134a$

enters the valve at a pressure of $9$ bar and is throttled to a pressure of $p_2=\frac{2}{b}ar.$ The refrigerant then enters the heat exchanger,

exiting at a temperature of $10C$ with no significant decrease in pressure. In a separate stream, liquid water at $1$ bar enters the heat

exchanger at a temperature of $25C$ with a mass flow rate of $m_4^{}=3k\frac{g}{s}$ and exits at $1$ bar as liquid at a temperature of $15C.$ Stray

heat transfer and kinetic and potential energy effects can be ignored.

Determine:

$($a$)$ the temperature, in $C,$ of the refrigerant at the exit of the valve.

$($b$)$ the mass flow rate of the refrigerant, in $k\frac{g}{s}.$

Part A

Your answer is correct.

Determine the temperature, in $C,$ of the refrigerant at the exit of the valve.

$T_2=$

$C$

Hint

Using multiple attempts will impact your score.

$5\%$ score reduction after attempt $1$

Part B

X Your answer is incorrect.

Determine the mass flow rate of the refrigerant, in $k\frac{g}{s}.$

$m_2^{}=k\frac{g}{s}$