Abstract
The abundant of solar in tropical countries is an advantage of utilizing solar energy.One of them is the use of the stack effect through the solar chimney.Experts have widely discussed the use of solar chimney in buildings.It concluded that solar chimney in buildings was able to increase the air velocity inside the buildings by 35%.To find out the overall performance of the solar chimney, crucial to find out more about ambient obstacle will affect the inlet and crosswind affected by the chimney to surrounding buildings and the environment, especially for an office building with solar chimney in Jakarta, Indonesia.This research aims; first, to investigate the effect of different ambient crosswind on the building with solar chimney.Second, to investigate the effective distance from the buildings with solar chimney with surrounding buildings to obtain maximum performance from the solar chimney system's inlet, which forces wind into the building.The method used is a numerical experiment with Ansys-CFX.Wind velocity and pressure produced in buildings with solar chimney are variable compared to the speed of buildings without a solar chimney to get effective distance with an obstacle.Also, the wind velocity that occurs around the outlet is a variable to assess how the crosswind influences the chimney on surrounding buildings and the environment.Ambient crosswind can reduce SC performance 5-10%, while obstacle in front of inlet will reduce the performance to 35% depend to the clearance distance.The results are the clear will be a guideline for 8-10 story buildings with a natural ventilation system which uses the solar chimney as a passive ventilation device.The results also compare with the regional regulation.
Abstract by the authors, reproduced under the CC BY-NC 4.0 licence. Original publication via the link below.