Application of earth-air heat exchanger cooling technology in an office building in Jinan city

Abstract In this paper, based on the study of the effect of indoor natural ventilation, application of earth-air heat exchanger cooling technology in an office was investigated. Taking an office building in Jinan City as an example, this research analyzed the performance of interactions between earth-air heat exchanger cooling technology and building indoor thermal environments. Indoor thermal environment was analyzed with numerical simulation of computational fluid dynamics, the Airpak software was applied for numerical calculation to gain the indoor temperature field, velocity field and the distribution of the PMV index. In addition, energy utilization efficiency was also analyzed in this paper; results showed that reasonable airflow organization is a significant content in airflow design of office rooms under the small temperature difference of earth-air heat exchanger conditions. This will provide basic reference for design of earth-air heat exchanger cooling system.