Performance analysis of an air conditioner in domestic setting using CFD simulation
In today’s world air conditioning is almost used everywhere for the human comfort. Thus, analyzing the performance of air conditioning and temperature distribution of the air conditioned is essential. This model work focused on numerical study of temperature distribution of an air conditioned room and performance of a 1.5 ton rating air conditioner (AC) using CFD simulation.
The model room with an air conditioner is shown in the above figure. The closed room with a dimension of 12m x 12m x 2.5m and air conditioner inlet opening length of 1m. Two slits in the AC are used as an Inlet. The numerical domain (mesh) is created using Hex-dominant parametric method. The final mesh consist of 2.8 million cells and all the mesh quality parameters are passed.
The custom type boundary condition is used in this simulations. The air conditioner is an inlet and set to fixed temperature of 290K, 291K & 293K with fixed velocity (zero) and fixed flux pressure. The room walls has the heat transfer coefficient as 0.5 Wm-2K-1 with ambient temperature is assumed as 313 K, fixed velocity (zero) and fixed flux pressure. The other AC parts (surface) are set to temperature gradient to zero with fixed velocity (zero) and fixed flux pressure. The steady state convective heat transfer solver with K-omega SST turbulence is selected for this numerical simulation.
The simulations were carried out for three different AC temperature 290 K, 291 K and 293 K with other boundary conditions as same. The simulation was carried out for 3000 iterations with 32 core and it ran for approximately 5 hours.
The detailed report can find in this link https://www.pdf-archive.com/2017/05/22/report-performance-analysis-ac/