Consideration of Climatic Parameters Changes in the Design of Ventilation Systems for High-Rise Buildings

Abstract

Capacity of heating system is determined by transmission heat losses throught external enclosures and heating of infiltration air. Airflow rate of infiltration air depends on external pressures in the center of air-permeable openings. A major component of this parameter is wind forse pressure, which value depends on its speed changing with the height of a building. In previous research works was made a compraising analysis of existing calculation methods of wind speed chandes on the height of high-rise buildings. Based on the obtained review, two calculation methods have been chosen in the present article: method, based on speed change coefficient and power-law method. The article presents the results of air mode calculation for high-rise building in Moscow. Results of calculations based on method of speed change coefficient provides higher values of supply airflow rate than in case of excluding the impact of wind speed changes along the height of a building and using power-law method.