Passive Solar Architecture(2003)

8/6/2019 Passive Solar Architecture(2003)

http://slidepdf.com/reader/full/passive-solar-architecture2003 1/18



Introduction :

P ASSIVE SOLAR DESIGN«

y Aim to maintain interior thermal comfort«.

y Is one part of green building design

y The scientific basis for passiv e solar building designhas been developed from a combination of

climatology, thermodynamics (particularly heat transfer), and human thermal comfort«.

Thursday, June 09, 2011 passive solar architectural building...

1. Cooling load predominant in Mumbai «.

2. Savings of 23% of annual loads can be achieved by optimising buildingdesign only««.



Some features

of passive solar design1. Direct Gain«

2. Trombe Wall..

3. Sunspaces..

4. Orientation..

5. Roof gardening..




Direct Gain S ystems

y South facing windows thus form the basis for thesimplest type of solar heating system. Sunlightincident on transparent surfaces allows the energy to

enter the living space directly and is called DirectGain.




A Simple Direct Gain Home«..




Site Plan:

Dont shade the south, except for overhangs, but do shade theeast and west sides. Decks, porches and carports also may be used

to shade.




Overhangs on the South Side


CONTROLLED PROJECTIONS



TROMBE WALLSy V ents provided to external walls at the top and bottom at

that can drive warm air out in the summer and bring coolerair




sunspaces

y A sunspace is a room glass panels which is designed tocollect sunlight and heat.

y Having a sunspace can cut down substantially on

heating bills, and it can also make a house moreenjoyable to live in





Winter Night

The shutters to the sunspace are closed tight

keeping all heat within the confines of the

main living area

Winter Day

collecting radiation and distributes it into the

house through the dividing wall. carried to the

top of the house from where it is redistributed via

fan.

Blinds protect the sun spaces from solar gain while ventilation to the North and South facades

and internal walls provided cross ventilation. Shutters may be manually operated as the

heating requirements dictate.



Sunspaces.



Orientation of building..


1. If possible, the longer axisof the building, should beoriented east/west.

2. Early Spanish designs wereusually long rectangularbuildings, situated so theirlonger walls faced towardthe south to absorb the

heat from the low wintersun. In the summer, whenthe sun was higher in thesky, long porches helpedto shade the buildings andkeep them cooler.



ROOF G ARDENING


I. This is an effective concept making the slab or roof cool, which is the hottest part in building. In our building wepeople use this concept effectively to reduce the heat gain

by slab.



Solar chimney..


1. The chimney has to be higher than the roof level

2. Heating of the air«

3. . Openings of the vents in the chimney should be against the

direction of the prevailing wind.

4. maximizing the cooling effect, through underground ducts before it

is allowed to enter the building.



Government of India

Ministry of Non-Conventional Energy Sources

y To encourage these organizations for constructing

their new buildings on the basis of solar designprinciples, the Ministry provides the following partialfinancial assistance:

(a) Preparation of Detailed Project Reports (DPRs) 50% of the cost of DPR of a building designed with the help of solar building design principles or

1.5% of the estimated cost of the building with a maximum of Rs.50,000for each project.

(b) Construction of Solar Buildings Limited to 10% of the cost of the building with a maximum of Rs. 10,00,000 for each project.




FUTURE FORECASTING WITH PRESENT SCENARIO

y Incorporating passive solar techniques in a building(small, medium or larged scale) design could be used tominimize load on conventional systems (heating, cooling,

ventilation, and lighting)..which will prove as boon forreducing the energy requirement in city country etc..

Thus helping in

development of the nations




Conclusion««.


1. Buildings, as they are designed and used today, contribute

to serious environmental problems because of excessiveconsumption of energy ( A verage mall -Rs. 25 lakh/ monthMultistoreyed office -Rs. 15 lakh/ month )

1. A wareness & implementation of new concepts through

the architecture students, practicing architects, buildingdesigners and scientists, engineers, urban planners,,municipal authorities, policy makers, and concernedcitizens will create a better place to live in..

Passive Solar Architecture(2003)

Documents

Transcript of Passive Solar Architecture(2003)