_____ largely determines the numerical heat transfer rate and __________ largely determines the value of wall temperatures.

Gas film coefficient; thermal conductivity

Gas film coefficient; liquid film coefficient

Gas film coefficient; thermal conductivity

Thermal conductivity; liquid film coefficient

Liquid film coefficient; gas film coefficient

_____ largely determines the numerical heat transfer rate and _______

1.	_____ largely determines the numerical heat transfer rate and __________ largely determines the value of wall temperatures.
A.	Gas film coefficient; liquid film coefficient
B.	Gas film coefficient; thermal conductivity
C.	Thermal conductivity; liquid film coefficient
D.	Liquid film coefficient; gas film coefficient
Answer» B. Gas film coefficient; thermal conductivity

Discussion

No Comment Found

Related MCQs

Determine the Prandtl number for a liquid having thermal conductivity of 4.6 W/mK, Cp of 8 kJ/kgK. Assume the viscosity to be 1.25 Cp.
The quantity μCp/k, where μ is the absolute gas viscosity, Cp is the specific heat of gas at constant pressure and k is the thermal conductivity is called as _________
The quantity hgD/k, where hg is the gas film coefficient, D is the diameter of the chamber and k denotes the gas conductivity is __________
Which of the following might simplify the determination of film coefficient?
_____ largely determines the numerical heat transfer rate and __________ largely determines the value of wall temperatures.
For absolute chamber gas temperature Tg, absolute liquid temperature Tl, absolute wall temperature on the gas side of the wall Twg, overall film coefficient h, gas film coefficient hg and liquid film coefficient hl, determine the expression for heat transferred per unit area q.
For absolute chamber gas temperature Tg, absolute liquid temperature Tl, overall film coefficient h, gas film coefficient hg and liquid film coefficient hl, determine the expression for heat transferred per unit area q.
The whole process of heat transfer through the chamber wall is a combination of ________ through the chamber wall and ________ through the flowing fluids.
Steady state heat transfer through a liquid-cooled rocket chamber wall can be considered as ___________
If dT/dL denotes temperature gradient with respect to thickness L at the surface A, k denotes the thermal conductivity, then the heat transferred per unit area is given by __________

_ largely determines the numerical heat transfer rate and ______ largely determines the value of wall temperatures.

Discussion

No Comment Found

Related MCQs

Reply to Comment