EXAMIANS
Finned tube heat exchangers
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The radiation heat flux from a heating element at a temperature of 800°C, in a furnace maintained at 300°C is 8 kW/m². The flux, when the element temperature is increased to 1000°C for the same furnace temperature is
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The Nusselt number for fully developed (both thermally and hydrodynamically) laminar flow through a circular pipe, where the wall heat flux is constant, is
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The actual temperature drop across the heating surface in an evaporator depends on the
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The separation of liquid droplets from the vapor is done by a/an __________ , in the evaporators.
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The characteristic dimensionless groups for heat transfer to a fluid flowing through a pipe in laminar flow are
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Steam traps are provided in steam carrying pipelines to
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Steam is routed through the tube in case of a __________ evaporator.
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Dietus-Boelter equation cannot be used for molten metals mainly due to its very low
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For concentrating an aqueous solution of a material like anhydrous Na₂SO₄, whose solubility decreases with rise in temperature, the most suitable evaporator is a __________ evaporator.
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