Problem $1(9\mathrm{.}83)$

A refrigeration cycle as shown can be used for cooling or for heating purposes using one of the two heat exchangers. Suppose a refrigerator should cool meat at $-10C$ in a $30C$ hot kitchen what are the minimum high and maximum low pressures in the cycle if the working substance is a$)R-134a$ or b$)R-410A.$

Answer: R $134$ a : $p{H}_H=771$kPa,$p_{10}=201\mathrm{.}7$kPa

Answer:

$R410a$:$p_H=1885$kPa,$p_{10}=573$kPa