Research on Technology of Creating Natural Ventilation in Huizhou Traditional Dwellings

In the long-term adaptation of Huizhou traditional dwellings to the local environment, a variety of climatic creating techniques have been formed, and natural ventilation creating technology is one of them. Three methods, i.e. theoretical analysis, simulation and actual measurement are combined to study the natural ventilation creating technology of Huizhou buildings. Natural ventilation design of Huizhou traditional dwelling can be summarized into four types: basic ventilation mode, reinforce of natural ventilation, passive cooling and control strategies. Natural ventilation performance is indicated by field measurement, and the hall and the bedroom both meet the minimum number of air changes per hour. The influencing mechanism of patio on natural ventilation of Huizhou traditional dwelling is studied by CFD software, flow rate is similar between the dwelling with patio and without patio. The wind speed range of the hall is 0.3∼1.4 m / s, and the bedroom is 0.1∼0.5 m / s. Cross ventilation of the hall is restrained and flow direction of each opening is changed by the patio, and chimney effect makes the inflow and outflow of patio simultaneously.