m
p, pressure of the fluid, Pa (N/m2)
q, heat input, Watt
∆p, terminal pressure drop, kPa
∆peff , effective pressure drop at terminal
average pressure, kPa
\(q"\), heat flux, kW/m2
\(q"\)e, eff,, effective heat flux through the
evaporator shell by conduction, kW/m2
\(q"\)e, s,, heat flux at the evaporator surface
supplied by heater, kW/m2
\(q"\)c, s,, dissipated heat flux from the
condenser surface by convection cooling, kW/m2
\(q"\)c, eff , effective heat flux dissipated
through the condenser shell by conduction,