Numerical simulation analysis of thermal performance of shallow round silo double-layer ventilation roof
WANG Yuanyuan
CHEN Yanyan
WANG Haitao
Abstract：The roof of a building plays a significant role in energy-saving and emission reduction in construction due to its high peak heat gain and large roof area.The influence of factors such as the dimensions of ventilation outlets,air inlets and air outlets,cavity wind speed,solar panels and wind deflector plates on the thermal performance of the ventilated roof is analyzed through the heat fluid-radiation coupling simulation method.The results show that the ventilation roof structure equipped with ventilation openings and air deflector plates has better thermal performance.The energy-saving effect is better when the air inlet wind speed is within 1.0 m/s to 1.5 m/s.The increase in the size of the air inlet and outlet causes the thermal performance of the ventilated roof to first improve and then decrease.The larger the area of the solar panels,the greater the energy savings of the ventilated roof.
Keywords：ventilation roofcoupled heat transferwind speedsolar panelwind deflector plate
Publication Date：2025-12-25
Online Publishing Date：2026-01-26(First online date of this platform, not the publication date of the document)
Pages：5( 1-5 )