Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : October 10, 2020 - October 11, 2020
Pages 0107-
This study experimentally investigated the boiling heat transfer characteristic of R32 vertical upward flow in a plate-fin heat exchanger. The experiments were carried out for a mass velocity range of 20–50 kgm-2s-1 and heat flux range of 3−6 kWm-2 at a saturation temperature of 15 °C. The heat transfer coefficient decreased with increasing vapor quality at low mass velocities because the dry area expanded with decreasing mass velocity and increasing vapor quality. The heat transfer coefficient increased with increasing vapor quality and heat flux due to enhance the forced convection and nucleate boiling.
