Convection between solid surface moving fluid,rate equ. dcomy =hA(Ts -T) h--Convection coefficient [w/mk] Ts--Surface temperature T。-Fluid temperature
Convection between solid surface & moving fluid, rate equ. s hA(T T ) conv q h -- Convection coefficient [w/m·k] Ts -- Surface temperature T ∞ -- Fluid temperature
Typical values of the convection heat transfer coefficient Process h(W/m2.K) Free Convection Gas 2-25 Liquids 50-1000 Forced Convection Gases 25-250 Liquids 50-20,000 Convection with phase change Boiling or Condensation 2,500-100,000
Typical values of the convection heat transfer coefficient Process h( W/m 2·K) Free Convection Gas Liquids 2-25 50-1000 Forced Convection Gases Liquids 25-250 50-20,000 Convection with phase change Boiling or Condensation 2,500-100,000