Optimization of turbulent heat transfer in a heat exchanger with helical corrugated tube

Abstract

The increase in convective heat shift has been studied in a one-stage non-stable run with the aid of spirally ribbed pipe. Results of the slope-to-breadth proportion P/DH = “0.27, 0.18, and 0.22” and “costal-extent to breadth proportion”e/DH = “0.04, 0.06, and 0.02” of spirally fluted ducts on the improvement of hotness exchange, thermal presentation portion, and isothermal friction are found and concluded in a coaxial duct hotness evaporator. Large volumes of unstable liquid flow with Reynolds numbers varies from 5500 to 60,000. Compared to corrugated tubes, smooth tubes produce less heat and transfer less heat. Heat conversion rate jumps from 123% to 232% in the test region. As a result, because of the restraint dropping production, the value of the friction factor happens 1.46–1.93 times on a flat tube in curved tubes. Additionally, probing data on the premises of curve fitting of equations are applied to find the “Nusselt number, abrasion part”, and thermal appearance section for the fluted duct in terms of slope ratio (P/DH), costal-extent fraction (e/DH), “Reynolds number (Re), and Prandtl number (Pr)”.