Research On Thermal Comfort Of Underground Atrium Space In Commercial Complex

The development and utilization of underground space can effectively alleviate the shortage of urban land resources,improve land use efficiency,and improve the urban ecological environment.The underground atrium space is the transition area connecting the underground space and the outside world.Setting the atrium in the underground space is to improve the environmental quality of the underground space and improve heat Effective means of comfort.This article takes the underground atrium space of the commercial complex in Xuzhou as the research object,combined with the winter climate conditions in Xuzhou in the cold region,and focuses on three questions about the thermal comfort of the underground atrium space of the commercial complex in winter.Question 1: What is the thermal comfort status of the underground atrium space of the commercial complex;Question 2: How to evaluate the thermal comfort of the underground atrium space of the commercial complex;Question 3: How to improve the thermal comfort of the underground atrium space of the commercial complex.(1)Answer question one using field research.On-site surveys and questionnaire surveys were conducted to conduct an on-site survey of the thermal comfort of each floor of the underground atrium in winter,and the current thermal comfort status was analyzed.It was concluded that 52% of the participants believed that the current thermal environment reached a comfortable state,and 25.8% thought The environment is relatively cold and the majority of these subjects are concentrated in the bottom area of the underground atrium space.(2)Answer the second question by linear regression analysis.Using the data obtained from the survey,a linear regression analysis method was used to establish the thermal comfort PMV model and MTS model of the underground atrium space,and the acceptable temperature range for the thermal neutral temperature and 80% satisfaction rate of the underground atrium space was proposed.After analyzing and comparing the differences between the two models,the MTS model was used to establish the adaptive thermal comfort model of the underground atrium space of the commercial complex.(3)Answer question three through computer simulation.Combined with the adaptive thermal comfort model,Airpak software was used to simulate and analyze the temperature distribution of different atrium area ratios,different plane ratios,and different profile shapes.The shape of the A-shaped or rectangular underground atrium can help improve the thermal comfort of the human body.Then,from the aspects of HVAC design and architectural design,the thermal comfort optimization strategy of the underground atrium space was proposed,hoping to provide a reference for the design of the underground atrium space of the commercial complex in Xuzhou area.This article has 56 pictures,36 tables,and 67 references.