Shading device design

Page 1


Design of Energy Efficient House

General strategies for Hot and dry climate :

Climate data analysis :

Evaporative cooling, South-western wind, Shrubs & higher sill to avoid sand

South-western wind, Shrubs & higher sill to avoid sand

North & north-eastern wind, Evaporative cooling

Passive heat gain

Pre-monsoon

Shading device calculation :

HSA= 60o ,

Fin depth= 1000 tan60o =578mm

Fin depth= 860 tan60o =498mm

Bedroom window: tilted fins for reflected & diffused light

Balcony:

HSA= 45o ,

Fin depth= 1420 tan45o =1420mm

Livingroom window: tilted fins for reflected & diffused light

Shading device calculation :

HSA= 75o ,

Fin depth= 1000 tan75o =578mm

VSA=50o , Overhang depth = 800 tan50o =420mm

Overhang depth = 1200 tan50o =630mm

Kitchen:

HSA= 45o , Fin depth= 1420 tan45o =1420mm

VSA=50o , Overhang depth = 1000 tan50o =524mm

Wind Pavilion:

Entrance window: tilted fins for reflected & diffused light

Floor Plans :

Sectional

Sections :

Section through dining, curtyard & bedrooms towards west

Section through entrance, curtyard & living towards south

Section through living, curtyard & entrance towards north

Section through stairs, living, batroom & balcony towards east

Elevations :

East Elevation South Elevation

Annual useful daylight illuminance :

Optimum UDI percentage

Inference

Most of the spaces are well lit. Balcony and wind pavilion on 1st floor have excess light.

GROUND FLOOR

UDI-a (100 - 3000 lux): 73.86%

UDI-s (<100 lux): 10.99%

UDI-e (>3000 lux): 15.15%

FIRST FLOOR

UDI-a (100 - 3000 lux): 57.45%

UDI-s (<100 lux): 2.69%

UDI-e (>3000 lux): 39.86%

Annual energy demand and offset

Renewable energy sourcing

3 300watt solar panel ovcourtyard opening, which also shade the court during high altitude of son

Annual Water demand and offset :

Average Day Water Demand: ADD = Daily average water demand

Maximum Day Water Demand: MDD = 1.4 x ADD

Peak Hour Water Demand: PHD = 2.3 x ADD

ADD: Average daily water demand = 225 L/capita/day + 10%

Calculation for 2BHK residence:

Considering maximum 5 people as resident.

ADD= 225L x 5 + 10% = 1125L + 112.5L = 1237.5L

MDD= 1.4 x 1237.5L = 1732.5L =1800(Approx)

Annual water demand =1800 x 365 = 657000L

Roof area = 102.24M2 - 10.9M2 = 91.34M2

Considering Total average rainfall in year and roof area 91.3.

So, Annually (0.194 x 91.34) = 17.72 M3 =17720 L water can be collected from rainfall. Therefor, (17720/657000) x100 = 2.7% water demand can be offset.

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Shading device design by jonai ianoj - Issuu