Current paper numerically investigated the effect of three main surrounding structures (exhaust grille, deflecting-ring, and heat exchanger) on airflow characteristics passing through the outdoor unit of split-type air conditioner. Characteristic curves of the fan were obtained, and then simulation results were successfully validated compared to experimental data. Three types of grilles (a circular grille, a rectangular grille, and a proposed novel grille) were evaluated and comprised with two parameters of non-dimensional aero-dynamic and air throw distances. Results indicated the superiority of proposed grille and circular grille, respectively in two mentioned parameters. Increment of the deflecting-ring’s width increased the non-dimensional aero-dynamic performance, the efficiency, and the turbulence intensity and vice versa. Decrement of deflecting ring’s width led to decreasing in these parameters except turbulence intensity. Besides, condenser blockage made a decrease in the non-dimensional aero-dynamic performance and increase in the total pressure coefficient.
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The first author is grateful to Young Researchers and Elite Club, Yasooj Branch, Islamic Azad University, Yasooj, Iran for its financial support.
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Mehryan, S.A.M., Kashkooli, F.M. & Soltani, M. Comprehensive study of the impacts of surrounding structures on the aero-dynamic performance and flow characteristics of an outdoor unit of split-type air conditioner. Build. Simul. 11, 325–337 (2018). https://doi.org/10.1007/s12273-017-0398-4
- outdoor unit of split-type air conditioner
- axial-flow fan
- air throw distance
- deflecting-ring’s width
- condenser obstruction