MAA 10-11

Las Vegas, USA.Proposed extension to MacDonalds

Environmental DesignSpyros Stravoravdis

Nidhi ShahTutor: Student:

SHEET

1

S5

“Las Vegas”

The anthill in a dessert.

The extension building is designed such that there are some additional seating for the restaurant, some of which will be in the open area. The building could adopt a mixed system of ventilation, this would save on energy.

The Site

The Orientation

THE

STRATEGIES

The best strategy to keep the building cool will be .Indirect Evaporative Cooling

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The direction of the wind is from the for all year long. It does not change considerably.

West The west wall is staggered to take maximum advantage of the wind.

The structure is orientated to take maximum advantage of the sun at the same time not to allow the building to overheat in summer.

182.5 Degree is the best orientation

The Wind Analysis

BAD: Orientation in any other direction gives more radiation during summer and less during winter.

BEST: Correct orientation gives more radiation during winter and less during summer.

The Climate Analysis

Climate: Sub tropical arid climate, because it lies within the Mojave Dessert.

The analysis tool indicates that it is hot and dry for most of the year.

The city enjoys the sun throughout the year, with very high temperatures in summer.

A penny saved is a penny earned, they said. So with joules of energy!

Buildings, as they are designed and used today, contribute to seriousenvironmental problems because of excessive consumption of energy and other natural resources. The close connection between energy use in buildings and environmental damage arises because energy intensive solutions sought to construct a building and meet its demands for heating, cooling, ventilation, and lighting cause severe depletion of invaluable environmental resources.However, buildings can be designed to meet the occupant’s need for thermal and visual comfort at reduced levels of energy and resources consumption.

Ÿ Micro-climate has been created by placing water in the West such that the wind can carry some amount of cool water vapor and increase the humidity of the air.

Ÿ The new building is placed very close to the old so that shadows cast all the time on the southern facade.

Ÿ The form has been derived due to the direction of the wind and d best orientation for radiation.

MAA 10-11

Las Vegas, USA.Proposed extension to MacDonalds

Environmental DesignSpyros Stravoravdis

Nidhi ShahTutor: Student:

SHEET

2

S5Shadow Analysis

By moving the building we can a c h i e v e m o r e shading to the water body

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The change in the position of the building.

Day light factor horizontal surface 2

The full black colour indicates that the water body is completely under shadow throughout the year. This wil l help keeping the water cool.

Calculating the day light factor for the water body.

Day light factor vertical surface 3

Caculating for a window in the south.

Adding light shelf 4

The light self allows day light to illuminate the room at the same time also obstructs excessive sunlight, specially in the summer.

Checking for lluminance 5

The quality of light improves after incorporating the light shelf.

Different ways in which the Lux levels of the room can be tested and measured.

Checking for lluminance 6

MAA 10-11

Las Vegas, USA.Proposed extension to MacDonalds

Environmental DesignSpyros Stravoravdis

Nidhi ShahTutor: Student:

SHEET

3

S5

Ÿ Walls are finished with white paint so that it reflects heat.Ÿ The roof is covered with white China mosaic glazed tiles so that it reflects

heat.Ÿ Microclimate is modified by vegetation and water bodies.Ÿ Day lighting by north glazing.Ÿ Thermal Storage Walls.Ÿ Windows are double glazed shutters.

Thus, in brief, an energy-efficient building balances all aspects of energy use in a building – lighting, space-conditioning, and ventilation – by providing an optimized mix of passive solar design strategies, energy efficient equipment, and renewable sources of energy.

Thermal analysis 7

Since the climate is hot most of the year the building does not require heating.The first bar shows the requirement of cooling for the building. The second graphs shows the reduction in requirement of cooling wen the thermal mass of the building was increased and also windows were double insulated.The model was also tested for different sizes of windows, but the change was not very significant.

Thermal analysis 8

The temperature of the building was checked for both mixed mode of system as well as natural ventilation.

Calculation

Some more strategies

Solar analysis 9

Since a there is a lot of incident solar light on the roof, we can put solar panels so that energy can be generated in the building itself.