Research on the Effect of the Size of the Wall-Hanging Air-Conditioner Indoor Unit on the Indoor Thermal Comfort

Abstract

Kuanbing Caozhu

The geometrical dimension of the wall-hanging air-conditioner indoor unit affects the indoor thermal comfort. In this paper, fluent software is used and standard k-e two equation turbulent model is chosen to carry out the simulation of the indoor temperature field and flow field of six different sizes of the single wall-hanging indoor air-conditioner in the room. The temperature distribution, velocity distribution and PMV distribution of the plane which is 1.8m from the ground are given. It can be known that under the condition of six kinds of sizes of the wall-hanging air-conditioner indoor unit, when the size of the air-conditioner indoor unit is 0.5m×0.3m×0.5m, the temperature variation and velocity variation at the z=1.8m section are relatively small. And the temperature distribution and velocity distribution are more uniform. When the size of the air-conditioner indoor unit is 0.5m×0.2m×0.2m, PMV at the z=1.8m section is the smallest, which is closest to 0, and the thermal sensation is almost moderate. Therefore, when the size of the air-conditioner indoor unit is 0.5m×0.2m×0.2m, better indoor comfort can be achieved.

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