HW#$2.$ Environmental Control System $1$

I need a handwritten answer.

If you have a building information below for a room with dimensions $($length $x$ width $x$ height$)$: $5m4m2\mathrm{.}5m$

The External wall has two windows and a door, window's area: $4m^2,$ door's area: $2m^2,$ roof $\text{'}$s area: $20m^2,$ floor's area: $20m^2$ and chimney $\text{'}$s area: $0\mathrm{.}5m^2.$

U$-$values for building components:

External walls: $0\mathrm{.}3\frac{W}{m^2}K$

Windows: $1\mathrm{.}6\frac{W}{m^2}K$

Door: $1\mathrm{.}5\frac{W}{m^2}K$

Roof: $0\mathrm{.}25\frac{W}{m^2}K$

Floor: $0\mathrm{.}25\frac{W}{m^2}K$

Chimney: $2\mathrm{.}0\frac{W}{m^2}K$

Indoor design temperature $($inside temperature$)$ is $21C$ where Outdoor design temperature $($outside temperature$)$: $-3C.$ Air changes per hour $(ACH)$:$0\mathrm{.}5.$

Find:

Estimate the heat loss via materials of the room building

The total heat loss

The internal gain for the room, consider an electrical appliance with a power consumption of $1000$ Watts $(1kW)$ used for $5$ hours a day with an internal gains' correction factor of $0\mathrm{.}8.$