helical tube heat exchangers are numerically investigated. The numerical computations are
performed by using SST turbulence model as well as by implementing conjugate heat
transfer from hot fluid in the tube to cold fluid in the shell. The thermo-physical properties of
the fluids were considered to be temperature dependent. The coil-side Reynolds number,
the shell-side Reynolds number and the Prandtl number ranged between 9000 and 36,000 …