INVESTIGATION OF THE EFFECT OF DUCT HEIGHT ON THE PERFORMANCE OF SOLAR AIR HEATER WITH BAFFLES

  • Jalal Mohammed Jalil Electromechanical Engineering Department, University of Technology, Baghdad, Iraq.
  • Ghaidaa Kaain Salih Electromechanical Engineering Department, University of Technology, Baghdad, Iraq.
  • Yousif Ali Madhi Electromechanical Engineering Department, University of Technology, Baghdad, Iraq.

Abstract

In this study, solar air heater with straight shaped baffles is investigated numerically and experimentally to improve the thermohydraulic performance by changing the height of the duct to find the optimum value. Numerically, steady state 3D forced convection turbulent model is used to solve Navier Stokes and energy equations of airflow inside rectangular duct of solar air heater. The results showed that, the 3.75 cm duct height with air mass flow rate of 0.05 kg/s yields the highest effective efficiency. In addition, the results showed that the 2.5 cm duct height gives the highest effective efficiency for mass flow rate up to 0.0375 kg/s and it decreases as mass flow rate increases due to excessive differential pressure developed across the duct

Published
2019-03-19
How to Cite
MOHAMMED JALIL, Jalal; KAAIN SALIH, Ghaidaa; ALI MADHI, Yousif. INVESTIGATION OF THE EFFECT OF DUCT HEIGHT ON THE PERFORMANCE OF SOLAR AIR HEATER WITH BAFFLES. JOURNAL OF ENGINEERING AND SUSTAINABLE DEVELOPMENT, [S.l.], v. 22, n. 02 Part -2, p. 111-122, mar. 2019. ISSN 2520-0917. Available at: <http://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/502>. Date accessed: 02 july 2020.