For a laminar flow of fluid in a circular tube, ‘h1’ is the convective heat transfer co-efficient at velocity ‘V1’. If the velocity is reduced by half and assuming the fluid properties are constant, the new convective heat transfer co-efficient is________________?
A. 1.26 h1
B. 0.794 h1
C. 0.574 h1
D. 1.741 h1
Related Questions on Chemical Heat Transfer Mcqs
A. Decreases the pressure drop
B. Decreases the outlet temperature of cooling medium
C. Increases the overall heat transfer coefficient
D. None of these
A. 35.5
B. 43.75
C. 81.25
D. 48.25
A graph between _____________ is called Wilson plot?
A. (1/U) Vs. (1/v0.8)
B. (1/v0.8) Vs. U
C. v0.8 Vs . U
D. (1/U) Vs. (1/V)
A. U1 – U2
B. 1/U1 – 1/U2
C. 1/U2 – 1/U1
D. U2 – U1
A. Wall or skin friction
B. Form friction
C. Both A. and B.
D. Turbulent flow