Study on Natural Ventilation Potential of Ordinary Office Buildings in Guangzhou Based on Architectural Factors

Abstract

As a traditional architectural design technology, natural ventilation has the functions of improving thermal comfort, indoor air quality and energy saving, which is in line with the architectural development concept of green and healthy buildings.Guangzhou is located in the hot-humid area of Lingnan, where is rich in wind resources and attaches great importance to the natural ventilation of buildings. Natural ventilation potential (NVP) are evaluation indexes that can effectively assist and optimize the natural ventilation design of buildings. With abundant relevant studies at home and abroad, various NVP evaluation indexes and calculation methods have been proposed, and strategies for natural ventilation design of buildings in different regions have also been given. Based on the parametric building performance simulation platform, this paper introduces s new NVP evaluation method to carry out parametric simulation research on the ordinary office buildings suitable for natural ventilation in Guangzhou. The results showed that the main factors that limit the NVP of ordinary office buildings in Guangzhou is condensation in summer, and low building density, building toward southwest, high glazing ratio or cross ventilation will bring about high NVP. Meanwhile there is an optimal value for the thermal resistance of the roof, and the greater the thermal storage coefficient of the main material, the greater the night natural ventilation potential.