Performance evaluation of 2x3 and 5x3 staggered tube bundle in upward cross flow boiling condition

Abstract

The tube bundle is an integral part of the heat exchanger used for commercial purposes in various industries. The experimental investigation carried out in the current investigation is to find the heat transfer phenomena of two different staggered tube bundles in upward cross flow boiling conditions. The parameters considered for the present study are heat flux range is 10-50 kW/m2, mass flux 20-80?kg/m2s and P/D (1.25, and 1.6) taking distilled water as working fluid. The 5x3 tube bundle has higher heat transfer phenomena compared to 2x3 tube bundles. This is because of higher number of heating tubes leads to higher nucleation in the tube bundle of 5x3. The heat transfer coefficient (HTC) rises with rise in heat flux. The increasing in mass flux showed the decreasing trend of HTC. In both the configuration the lowest P/D shows higher HTC. The combination of smaller configuration of tube bundle can lead to higher steam generation and lower the chance of dry out phenomena. � 2023 Author(s).