Question $1$

$1\mathrm{.}1$ Determine the specific enthalpy and volume of steam at a pressure of $5000$ kPa and dryness fraction $0\mathrm{.}94.$

$1\mathrm{.}2$ Determine the specific enthalpy of steam at a pressure of $18$ bar and with a temperature of $320C.$

$1\mathrm{.}3$ Steam at $15$ bar pressure and of dryness fraction $0\mathrm{.}7$ is throttled to $1\mathrm{.}5$ bar pressure in a throttling calorimeter.

Determine the dryness fraction of the steam after throttling.

QUESTION $2$

The following data was recorded during a $90-$min test on a steam boiler for one of the plant visits by the industrial

visits coordinator, Mr R Gayapershad.

$2\mathrm{.}1$ Draw a fully labelled diagram showing the steam plant layout.

$2\mathrm{.}2$ Determine the mass of fuel oil utilized by the evaporator in $kg.h^{-1}$

$2\mathrm{.}3$ Determine the heat powers absorbed by the economizer, evaporator and superheater units in kW $.$

$2\mathrm{.}4$ Determine the heat losses in the plant in kW due to flue gases.