Numerical investigation effect of air curtain on building air conditioning system energy consumption in high relative humidity regions

Air curtains play a crucial role in providing effective thermal insulation and environmental regulation within various indoor environments. This study aims to examine the influence of ambient humidity on the sealing efficacy of two distinct air curtain configurations by utilizing numerical simulation methods. The investigation focuses on how parameters such as jet velocity, jet thickness, and the relative humidity of the external environment impact the performance of the air curtains. The jet outlet thickness for both configurations ranges from ۵ cm to ۱۲.۵ cm, with the horizontal air curtain measuring ۱.۹ m in length and each vertical air curtain measuring ۱ m. This research employs three-dimensional, unsteady numerical simulations conducted using Ansys Fluent software. The simulation model features a cold storage facility comprising two adjacent rooms, each measuring ۶ m x ۶ m, connected by a door that is ۱.۸ m wide and ۲ m high. Simulations were executed under initial temperature conditions of ۲۰ °C indoors and ۴۴ °C outdoors, across four different relative humidity scenarios (۵۰%, ۶۰%, ۷۰%, and ۸۰%). The findings indicate that variations in flow rate, nozzle thickness, and humidity levels significantly influence the operational effectiveness of the air curtain.

کلیدواژه ها:

Turbulent Flow ، Air Curtain ، high humidity ratio ، numerical simulation