Air to liquid heat transfer coefficient experimental comparison between silicon carbide and glass shell and tube heat exchangers in a pilot plant scale
Year: 2024
Type: article
Abstract: Instead of the expected 3.8–5.4% increase in the heat transfer coefficient due to the better thermal conductivity of silicon carbide tubes compared to glass tubes, the observed increase was 18–22% for 150–275 kg·h−1 airflow and 6 kg·s−1 propane-1,2-diol coolant in tubes. This additional 15–17% increase is probably due to local flow turbulisation due to the roughness of the sintered carbide of 4–10 µm, which unfortunately also causes a 17–24% higher air pressure drop. The hand calculation model used underestimates the heat transfer coefficient by −2% to 10%, which is better than CHEMCAD 8 modeling results.
Source: Experimental Heat Transfer
Authors: Petr Horvát, Tomáš Svěrák
Institution: Brno University of Technology
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
Funder: Vysoké Učení Technické v Brně
OpenAlex ID: W4403372168