Ethanol is being produced from glucose using S$.$ cerevisiae. $0\mathrm{.}45C-$moles of ethanol and $0\mathrm{.}25C-$moles of biomass of elemental composition $C{H}_{1\mathrm{.}8}{O}_{0\mathrm{.}56}{N}_{0\mathrm{.}17}$ were produced per $C$ mole of glucose using $0\mathrm{.}04$ moles of ammonia. Assuming the inlet and outlet streams are maintained at $25C,$ what is the heat load on the reactor? The heats of combustion of ammonia is $383k\frac{J}{m}ol$ that of glucose $467\mathrm{.}8k\frac{J}{C}-$ mol and for ethanol $684\mathrm{.}5k\frac{J}{m}ol.$ Explain the concept of CDM