Evaluation of Influence of Header Design on Water Flow Characteristics in Window Cavity with CFD

Water flow window is a multi-glazing system with a flowing water layer in the cavity. The water flows in a closed loop which is connected to a double-pipe heat exchanger. Two headers with evenly distributed openings are located at the top and bottom ends of the window cavity. Water flow and temperature distribution in the cavity are studied with different header designs in this numerical study. It is found that the change in opening size or interval will affect the local distribution of temperature and flow velocity around the headers. But their effect on the overall system performance is insignificant.