It is known that passive heat transfer intensification in tubes is carried out by acting on the flow with inserted intensifiers or by changing the shape of the heat exchange surface. The presented work deals with the study of the intensification process using spherical turbulators located in a horizontal stainless steel channel. Experimental data were obtained on the heat transfer intensity and pressure drop during circulation of an alcohol-water mixture with a concentration of 30% by weight at a pressure in the vessel of 0.03–0.04 MPa. The efficiency of spherical intensifiers and the pressure drop in the section with spherical intensifiers were compared with the efficiency of spiral intensifiers and the pressure drop in the section with spiral intensifiers at similar operating parameters. It was shown that the efficiency of spherical intensifiers is commensurate with the efficiency of spiral intensifiers at significantly lower pressure drops.
Zhukov et al. (2026) studied this question.