EXPLORING SHADING DEVICE STRATEGIES FOR COOLING EFFICIENCY IN THE DESIGN OF FIVE STAR HOTEL, BAUCHI, NIGERIA
EXPLORING SHADING DEVICE STRATEGIES FOR COOLING EFFICIENCY IN THE DESIGN OF FIVE STAR HOTEL, BAUCHI, NIGERIA
No Thumbnail Available
Date
2019-11
Authors
OTHNIEL, Abraham
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Over the years, the need for energy efficient building is on the increase as the current
practice of building trends consumes a lot of energy. Buildings such as hotels consume
a lot of electricity in providing comfort to the occupants through mechanical cooling.
The most effective way of reducing cooling load is by reducing the solar heat gained by
the building. External shading device are efficient in reducing cooling load when
properly designed. The study aims to improve cooling efficiency by assessing shading
device strategies with different variables. The variables that are considered in this are
the horizontal shading device on the north and south orientation, the distance of shading
device from wall and angle of shading device in the area of study in the hot -dry
climate.The based case was modeled in Autodesk Revit and simulated using the
Autodesk simulation Computational Fluid Dynamics (CFD). Autodesk simulation CFD
assess for natural ventilation using indicators such as Predicted Mean Vote (PMV),
Percentage Persons Dissatisfaction (PPD) and temperature. The result for the based
cased model was +2.4(warm) of the PMV, 78% of PPD and the temperature of 32.01°C.
While the concrete shading device at an angle of 70° with no distance from the wall on
the north and south proved more comfortable over the other shading device strategies
with a PMV of +0.2 (slightly neutral) and a PPD of 15% which is satisfactory, with a
temperature of 27.01°C. In conclusion, the study discourages the use of 90° angle
shading device with 200mm from wall with a PMV of +2.4 and a PPD of 80%, which
has high discomfort level in the space. The 70° with no distance from the wall has
shown significant improvement of natural ventilation and a 5°C reduction in temperature.
Description
A THESIS SUBMITTED TO THE SCHOOL OF POSTGRADUATE STUDIES
AHMADU BELLO UNIVERSITY IN PARTIAL FULFILLMENT OF THE
REQUIREMENTS FOR THE AWARD OF MASTERS DEGREE IN ARCHITECTURE
DEPARTMENT OF ARCHITECTURE,
FACULTY OF ENVIRONMENTAL DESIGN,
AHMADU BELLO UNVERSITY,
ZARIA, NIGERIA
Keywords
EXPLORING SHADING DEVICE STRATEGIES,, COOLING EFFICIENCY,, DESIGN,, FIVE STAR HOTEL,, BAUCHI,, NIGERIA