Q$15.$ To ensure the curing process, the oven must maintain a temperature of $250C,$ while the

ambient temperature is $20C.$ The oven's dimensions are as follows: length of $19$ meters, width

of $7$ meters, and height of $4$ meters. The component to be cured has a length of $2$ meters, width

of $0\mathrm{.}6$ meters, and height of $1\mathrm{.}8$ meters. Each curing cycle can accommodate $21$ components, and

the curing time is $25$ minutes per cycle. The components are made of mild steel $($MS$)$ and weigh

around $60$ kilograms each. The oven panel is constructed of $1\mathrm{.}2$ mm thick Galvanized Iron $($GI$)$

and is insulated with Rockwool, which has a thickness of $150$ mm $,$ a density of $96k\frac{g}{m^3},$ and a

thermal conductivity of $0\mathrm{.}032\frac{W}{m}*K.$

Calculate the heating load required, including all heat losses from convection, conduction, and

radiation.

Determine the energy required to raise the temperature $($in calories$)$ for the full running of

the curing process.