This 3 sentence summary provides the key details about the Monama House in Hyderabad, India: The Monama House located in Hyderabad, India relies on energy efficient design and renewable energy sources to reduce environmental impact, with a reinforced concrete structure, windows oriented to maximize cross ventilation, and an evaporative cooling system using a water pond and fans. The house also uses a photovoltaic system to provide power during daily four hour outages and a solar hot water system that operates via thermosiphon without pumps or controls.

1. MONAMA HOUSE

2. LOCATION:
HYDRABAD, INDIA
CLIMATE:
INLAND COMPOSITE
CONSTRUCTION AREA:
234.00 m2
BUILDING TYPE:
RESIDENTIAL BUILDING
OWNED BY:
RAMLALS

4. This house relies on energy
efficient design to reduce loads
and, where possible, reverts to
renewable energy to meet them.
The house was completed in 2001

5. A Low environmental impact:
The underlying ideology behind the building design was
to generate as low an
environmental impact as possible
Construction materials:
The upper floor and roof structure is made with
reinforced concrete,
which has low environmental impact. Natural materials
have been chosen for most internal finishes

6. Wall orientation:
West oriented openings areassociated with external conditions ofhigh
solar radiationandambient temperature during the summer. Thus the
windows in this orientation were minimized orreplaced with other
solutions. Depending on the time ofthe day, high orlow pressure zones
form in either east or west directions. This induces airmovement from
the zone ofhigh pressure tothat of low pressure.
Ventilation:
The windows ofthe house have been 195 degrees specially oriented
such that these pressure differences, in combination with the prevailing
wind direction, may be utilized forcontinuous ventilation. There is also
a ventilation shaft toexhaust hot airlocated in the central part of the
house. The open plan design supports this process by eliminating any
internal resistance tothe full movement ofair

7. Buried pipes and evaporative
cooling:
The system used is a water pond alongwith an airfan. The system
provides cooling by consuming justthe amount of electricity necessary
forthe operation ofthe fans. Since the fans consume less energy than
airconditioners this proves an energy efficient design formaintaining
human comfort. Duringthe humid months evaporative coolers are
rendered
inefficient owing to the high humidity levels. The system allows for the
ponds tobe drainedduring these months (July through October) and
window fans used toforcefully ventilate the house

8. Renewable energy:
In Hyderabad there are four hours of power cut each day. The client
specifications were to design a system thatworks as a photovoltaic stand
alone system during power cuts, and asa regular grid connected system
when the grid is working. The battery chosen for this design allows for
four days of autonomy, making unlikelythat the client hasto use the
utility power to charge the battery.

9. Solar hot water collector:
Thesystem chosen in this house was the free flow system known as a thermosiphon
system. Thesystem has no pump orcontrols and is fully automatic in operation.
In the thermosiphon system the tank is positioned above the collector. As the water in
the
collector is heated by the sun, it rises into the tank mounted above the collector. This
causes the cold water in the tank to flow into the collector, where it is heated. In this
way,
flow is createdand the tank is filled with hotwater

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