Research On The Vertical Distribution Of Air-conditioning Load In A Thousand-meter Scale Megatall Building

The tall building boom of the past decades has been unprecedented in that ithas taken place across virtually the entire globe simultaneously. The height ofKingdom Tower will be over1000m.With the increase of the number and the height,the cooling load calculation of the tall buildings has brought the designers newproblems. Because the heights of megatalls have gone far beyond the ordinarybuildings, the parameter of the design code could not meet the needs of themegatallls yet. It is much necessary to put forward proper methods of loadcalculation according to the development of the megatall buildings.This article first analyzes the meteorology and investigates relatedliterature.Then we used the mesoscale meteorological model WRF to simulate theair relative humidity and temperature values along the vertical direction in Beijing,We analyze the origin meteorology data of January and July in2012by WRF, andused it in following simulation.After we got the variation of the parameters along the vertical direction atdifferent times，we calculated the air-conditioning load of room at different heightsin a thousand meter scale megatall building in Beijing. In this study, we calculatedthe A/C loads of the rooms above the ground0meter,300meters,500meters,800meters and1000meters. We summarized two kinds of load index for A/C loads.Using the above design index,we simulated the annual building energyconsumption. Then the problem of fresh air was analyzed, assuming two differentprecept of fresh air and we calculated of the energy consumption of the air conditionsystem.