CHEN20009 Study Guide - Final Guide: Reaction Rate, Heat Flux, Heating Element

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Document Summary

Transport processes is a conceptual first-principals subject concerned with the transfer of three things: The entire subject revolves around developing the ability to do a balance of the above components. Once this is practiced for one of the components, the others follow a virtually identical process. The balances essentially use the following equation: (cid:1870)(cid:1872)(cid:1857) (cid:1867)(cid:1858) (cid:1855) (cid:1866)(cid:1859)(cid:1857)=(cid:1870)(cid:1872)(cid:1857) (cid:1866) (cid:1870)(cid:1872)(cid:1857) (cid:1867)(cid:1873)(cid:1872)+(cid:1870)(cid:1872)(cid:1857) (cid:1868)(cid:1870)(cid:1867)(cid:1856)(cid:1873)(cid:1855)(cid:1857)(cid:1856) (cid:1870)(cid:1872)(cid:1857) (cid:1855)(cid:1867)(cid:1866)(cid:1871)(cid:1873)(cid:1865)(cid:1857)(cid:1856) The system in question must be defined prior to performing the balance using boundaries (drawing a diagram is the way to go). Rate of change refers to the increase in the amount of heat energy in the system, ie how much more heat energy the system has compared to before. Rate in refers to heat brought into the system, generally referring to the natural heat energy contained in the fluid entering pipe or heat entering the pipe from surrounding hot fluids.