A non-dimensional number generally associated with natural convection heat transfer is

Related MCQs

• A non-dimensional number generally associated with natural convection heat transfer is
• Nusselt number is a function of Prandtl number and __________ number of fluid in natural convection heat transfer.
• Non-dimensional number generally involved in case of heat transfer from horizontal cylinder by natural convection is
• Extended heat transfer surface like fins are used to increase the heat transfer rate. Fin efficiency is defined as the ratio of heat transferred across the fin surface to the theoretical heat transfer across an equal area held at the
• In convection heat transfer from hot flue gases to water tube, even though flow may be turbulent, a laminar flow region (boundary layer of film) exists close to the tube. The heat transfer through this film takes place by
• The average heat transfer co-efficient over the entire length of the plate (ha) and the local heat transfer co-efficient (hL), in case of heat transfer over a flat plate in laminar zone is related as
• A 10 cm dia steam pipe, carrying steam at 180°C, is covered with an insulation (conductivity = 0.6 W/m.°C). It losses heat to the surroundings at 30°C. Assume a heat transfer co-efficient of 0.8 W/m2 .°C for heat transfer from surface to the surroundings. Neglect wall resistance of the pipe and film resistance of steam. If the insulation thickness is 2 cms, the rate of heat loss from this insulated pipe will be
• Fluid motion in the natural convection heat transfer between a solid surface and a fluid in contact with it, results from the
• In natural convection heat transfer, the correlating parameter is the
• Heat transfer occurs by natural convection because change in temperature causes difference in