(Solved): Part I: Short answer questions (36%) Two commonly used thermocouple T and K types, which type uses t ...

Part I: Short answer questions (36%) Two commonly used thermocouple T and K types, which type uses the yellow plug? Is heat transfer a scalar or a vector quantity? Thermal resistances due to conduction and convection in radial systems behave differently. Does the optimum insulation thickness exist for a radial system? Consider an insulated oil pipeline exposed to atmosphere in southern Australia. Will the critical radius of insulation be greater in July as compared to that in January? Under what conditions can the heat transfer from the fin tip be neglected? Hot water is to be cooled as it flows through the tubes exposed to atmospheric air. Fins are to be attached to enhance heat transfer. Where would you recommend attaching the fins? Inside or outside? Consider two identical hot solids and surrounding air. One solid is cooled by a fan while the other is allowed to cool naturally in air. For which solid lumped analysis is more valid? Consider transient one dimensional heat conduction through a plane wall. For explicit method, what is the von Neumann stability for the interior nodes? Write down the definition and explain its physical meaning of Schmidt number. Write down the definition and explain its physical meaning of Scherwood number. Parallel laminar flow over a flat plate, compare the thickness of velocity boundary layer

and thermal boundary layer

for liquid metal.