Which of the following situations can be approximated to a steady state heat transfer system?

A A red hot steel slab (having outside surface temperature as 1300°C) exposed to the atmosheric air at 35°C
B 10 kg of dry saturated steam at 8 kgf/cm<sup>2</sup> flowing through a short length of stainless-steel pipe exposed to atmospheric air at 35°C
C Boiling brine kept in open vessel when the bottom surface temperature of the vessel is maintained constant at 180°C
D 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

Correct Answer: 10 kg of dry saturated steam at 8 kgf/cm<sup>2</sup> flowing through a short length of stainless-steel pipe exposed to atmospheric air at 35°C

Bissoy MCQ
#Chemical Engineering #Heat Transfer

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