higher
lower
same
depends on the area of heat exchanger
cold water inlet and outlet
hot medium inlet and outlet
hot medium outlet and cold water inlet
hot medium outlet and cold water outlet
both the fluids at inlet (of heat ex¬changer where hot fluid enters) are in their coldest state
both the fluids at inlet are in their hot¬test state
both the fluids .at exit are in their hottest state
one fluid is in hottest state and other in coldest state at inlet
better insulation should be put over pipe and better one over it
inferior insulation should be put over pipe and better one over it
both may be put in any order
whether to put inferior OIL over pipe or the better one would depend on steam temperature
one dimensional cases only
two dimensional cases only
three dimensional cases only
regular surfaces having non-uniform temperature gradients