天津市超高层建筑暖通空调设计气象参数评估

doi:10.3969/j.issn.1673-503X.2019.04.019

Abstract

Abstract: The vertical variations of meteorological parameters designed for the Heating,Ventilation and Air Conditioning (HVAC) systems and their impact on the design load were analyzed using temperature data obtained from a 255-m meteorological tower in Tianjin.A vertical temperature model was established and it can be used to calculate outdoor air temperature of super high-rise buildings and then to determine the values of meteorological parameters of the HVAC system.The results indicated that design outdoor temperatures for heating and air-conditioning in winter and summer all decrease with height from 5 m to 200 m above the ground,by 2.0℃,1.0℃,and 2.8℃,respectively.Such variations of outdoor design temperatures lead to the increase in design load for heating and wintertime air-conditioning by 5.78% and 1.36%,respectively,and the decrease in design load for summertime air-conditioning by 5.85%.Using the vertical temperature model,the meteorological parameters for the HVAC systems between 200 m and 500 m were calculated.Outdoor design temperatures for heating and air-conditioning in winter and summer also exhibit a decreasing trend with height in a rate of 0.52℃/100 m,0.50℃/100 m,and 0.66℃/100 m from 200 m to 500 m,respectively.It is improper to only use the 2-m observational data to calculate the outdoor design meteorological parameters of HVAC systems for super high-rise buildings.The changes in these meteorological parameters with height should be fully considered in the design for super high-rise buildings,to improve the indoor thermal comfort and building energy efficiency.

Key words: Super high-rise building, Heating,Ventilation and Air Conditioning (HVAC), Meteorological parameters, Vertical temperature model, Design load

CLC Number:

P468.0⁺21

CAO Jing-fu, YANG Yan-juan, CHEN Yue-hao, WANG Min, HAO Li-sheng. Assessment on meteorological parameters designed for the Heating,Ventilation and Air Conditioning (HVAC) systems in super high-rise buildings in Tianjin[J]. Journal of Meteorology and Environment, 2019, 35(4): 133-138.

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Assessment on meteorological parameters designed for the Heating,Ventilation and Air Conditioning (HVAC) systems in super high-rise buildings in Tianjin

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