Sedghi Lectures Flashcards
General Mass Balance Equation
Input + Formation - Output - Consumption = Accumulation
Steady State Mass Balance Equation
Input + Formation = Output + Consumption
Mass Balance Equation With No Reaction And Mass Is Neither Generated Or Consumed
Input = Output
Energy Balance For A Steady State System
W = Rate that work is done onn a system
E = energy per mass
Energy Balance For A Steady State System With Negligible Change In Kinetic & Potential Energy
Steady State Energy Balance For Sensible Heating Or Cooling
Cp = heat capacity of the fluid averaged over temp range
Heat Transfer Through A Large Flat Plate
k = thermal conductivity of material
Heat Transfer Through A Composite Flat Plate
Convection
Where h = convective heat transfer coefficient
Log Mean Temperature Difference
Forced Convection
Where the flow is induced by external forces e.g from a pump or fan
Natural Convection
Where the flow is induced by buoyancy forces, which result from the thermal expansion of hotter fluids that rise relative to cooler, denser fluids.
