Research on thermal environment in room using separated air-conditioning unit by supplying low-temperature air

Thermal environment and air flow condition in small assembly room at typical summer weather was studied by numerical simulation and experiment. Numerical simulation was based on the indoor zero-equation turbulence model using momentum method and N-point model as boundary condition of air supply opening respectively. It was found that the N-point model at N=3 as inlet boundary condition to simulate louver supply opening with certain angles gives a good simulation result. A method of simulating heat-gain by solar radiation was proposed. It gives considerable comparable temperature gradient above 0.2 m height. Ultimately, the thermal comfort evaluation was given as separated air-conditioning unit supply low temperature air to the room.