Heat exchangers are used in industrial and household processes to recover heat between
two process fluids. This paper shows numerical investigations on heat transfer in a double
pipe heat exchanger. The working fluids are water, and the inner and outer tube was made
from carbon steel. There are several constructions which able to transfer the requested heat,
but there is only one geometry which has the lowest cost. This cost comes from the material
cost, the fabrication cost and the operation cost. These costs depend on the material types …

This paper investigates the design optimization of double pipe heat exchanger using
mathematical programming. The heat exchanger area is minimized and the thermo-fluid
dynamic conditions are considered for the use of the right transport correlations, together
with design specifications, such as, maximum pressure drops and minimum excess area.
The modular nature of this kind of heat exchanger and the allocation of the streams (inside
the inner tube or in the annulus) are also contemplated. Two mixed-integer nonlinear …