Question $3$

$150$ psig steam is used to heat a process stream from $313$ degrees Fahrenheit to $347$ degrees Fahrenheit. Heat is transferred

from the steam to the process fluid because of a difference in temperature $($driving force$).$ The steam enters the heat

exchanger as a saturated vapor and leaves as saturated liquid condensate, taking advantage of the latent heat of vaporization.

To check the flow rate of steam, an operator using the "pail and scale" method; the operator weighs an empty bucket $(2l{b}_f),$

collects the liquid condensate leaving the heat exchanger for a measured amount of time $(52\mathrm{.}3$ seconds$),$ and then weighs the

filled bucket $(14\mathrm{.}8l{b}_f).$ Determine the following $($answer each to the first decimal place$)$:

The temperature change in degrees Kelvin $=$

The mass flowrate in $l\frac{b_m}{m}in=$

The mass flowrate in $k\frac{g}{h}r=$