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chemical engineering heat transfer
1. Which of the following situations can be approximated to a steady state heat transfer system ?
(A): 10 kg of dry saturated steam at 8 kgf/cm2 flowing through a short length of stainless steel pipe exposed to atmospheric air at 35°C.
(B): A red hot steel slab (having outside surface temperature as 1300°C) exposed to the atmosheric air at 35°C.
(C): A sub-cooled refrigerant liquid at 8°C flowing at the rate of 6 Kg/minute through a copper pipe exposed to atmospheric air at 35°C.
(D): Boiling brine kept in open vessel when the bottom surface temperature of the vessel is maintained constant at 180°C.
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