Research on the application of computational fluid dynamics to propose the location of outdoor unit equipment of the VRV air conditioning system to optimize the system's performance

Abstract

The arrangement of the outdoor unit equipment of the Variable Refrigerant Volume (VRV) air conditioning system greatly affects the temperature field distribution of the air mass surrounding the outdoor units. Improper arrangement of outdoor unit equipment  will lead to increased air temperature surrounding these outdoor units, leading to cooling capacity reduction, unstable operation, reduction of system life and consumes energy. However, most air conditioning system designs have not evaluated in detail the impact of air temperature surrounding outdoor unit equipment on the system's cooling capacity. Recently, with the strong development of fluid mechanics simulation software, the temperature field around outdoor unit  can be simulated using the technical parameters of outdoor unit and building structures, and meteorological conditions. Therefore, this study applied FLOVENT software to evaluate the influence of the location of outdoor unit equipment  on the cooling capacity of the system at office buildings in Hanoi.