himachal pradesh state co-operative bank

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H.P.Co-operative H.P.Co-operative Bank ,Shimla Bank ,Shimla

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Energy Efficient Buildings in India

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Page 1: Himachal Pradesh State Co-Operative Bank

H.P.Co-operative H.P.Co-operative Bank ,ShimlaBank ,Shimla

Page 2: Himachal Pradesh State Co-Operative Bank

Himachal PradeshHimachal Pradesh is the first state in the is the first state in the country to introduce Solar passive building country to introduce Solar passive building technology for the design & construction of Govt. technology for the design & construction of Govt. & Semi Govt buildings on large scale. Solar & Semi Govt buildings on large scale. Solar Passive building technology utilizes the Passive building technology utilizes the orientation of building for the availability of solar orientation of building for the availability of solar energy at the site for natural heating or cooling energy at the site for natural heating or cooling of the building resulting in saving large amounts of the building resulting in saving large amounts of fossil fuels and electricity. With about 250 of fossil fuels and electricity. With about 250 days of sunshine per year, Himachal Pradesh has days of sunshine per year, Himachal Pradesh has an ideal climate for solar passive heating. The an ideal climate for solar passive heating. The adoption of this technology in the design of adoption of this technology in the design of buildings in the state will not only reduce the buildings in the state will not only reduce the large consumption of fossil fuels and electricity large consumption of fossil fuels and electricity for space heating, but also result in considerable for space heating, but also result in considerable savings of Govt. exchequer. savings of Govt. exchequer.

Page 3: Himachal Pradesh State Co-Operative Bank

This multistoried RCC structure is This multistoried RCC structure is located in Shimla. Oriented at 10 degree located in Shimla. Oriented at 10 degree west of south ,the building has a long west of south ,the building has a long narrow profile in plan .The narrow south narrow profile in plan .The narrow south face has access to light and air from the face has access to light and air from the adjacent lane while the east face has no adjacent lane while the east face has no access to light and air as it abuts other access to light and air as it abuts other building. Since Shimla has good building. Since Shimla has good sunshine during winters and plenty of sunshine during winters and plenty of sun falls on façade of building ,a sun falls on façade of building ,a considerable amount of solar heat could considerable amount of solar heat could be collected from this facade, The bulk be collected from this facade, The bulk of energy consumption in the building of energy consumption in the building was on two fronts ,one for lighting the was on two fronts ,one for lighting the deeper spaces in the center of the deeper spaces in the center of the building and the other for heating the building and the other for heating the building during wintersbuilding during winters..

Page 4: Himachal Pradesh State Co-Operative Bank

South Facing heat collector wall with A dark wall behind. The heated airFrom the surface of the trombe wallIs drawn out at the top of the staircaseTower and conducted through ducts To the central workspaces

Page 5: Himachal Pradesh State Co-Operative Bank

Project detailsProject details Location Location Mall Road, Shimla, HimachalMall Road, Shimla, Himachal PradeshPradesh Building type Building type Office buildingOffice building Client/Owner Client/Owner Himachal Pradesh Cooperative Himachal Pradesh Cooperative

BankBank Architect Architect Ashok B LallAshok B Lall Climate Climate Cold and cloudyCold and cloudy Local Architect Local Architect C L GuptaC L Gupta Energy consultant Energy consultant S S Chandel, Principal S S Chandel, Principal

Scientific Officer and Coordinator,Solar Scientific Officer and Coordinator,Solar House Action PlanHouse Action Plan

Himachal Pradesh, State Council for Himachal Pradesh, State Council for Science, Technology, and Environment.Science, Technology, and Environment.

Page 6: Himachal Pradesh State Co-Operative Bank

Year of start/completionYear of start/completion 1995–19981995–1998 Built-up areaBuilt-up area 1650 m² (about 35% is1650 m² (about 35% is heated by solar air heating system)heated by solar air heating system) Total area of solar air heating panelsTotal area of solar air heating panels 38 m²38 m² Cost of entire systemCost of entire system Rs 1.1 million (includes AHU, Rs 1.1 million (includes AHU,

electrical back-up, blower, ducting controls)electrical back-up, blower, ducting controls) Electrical back-upElectrical back-up 3 × 15 kW (in 3 stages)3 × 15 kW (in 3 stages) BlowerBlower 4000 cfm (constant speed)4000 cfm (constant speed) Brief specificationsBrief specifications The external walls are 23-cm The external walls are 23-cm

thick masonry construction with 5-cm thick glass wool thick masonry construction with 5-cm thick glass wool insulation. The windows are doubleglazed and the total insulation. The windows are doubleglazed and the total area is about 155 m². The roofing is made of area is about 155 m². The roofing is made of corrugated galvanized iron sheeting.corrugated galvanized iron sheeting.

Total building costTotal building cost Rs 22 million (including solar Rs 22 million (including solar passive and active features).passive and active features).

The initial cost of the bank building without The initial cost of the bank building without incorporation of passive solar measures was Rs 12 incorporation of passive solar measures was Rs 12 666/m², which was increased by Rs 680/m² to Rs 13 666/m², which was increased by Rs 680/m² to Rs 13 346/m² thus resulting in 5.6% increase in cost due to 346/m² thus resulting in 5.6% increase in cost due to incorporation of passive solar measureincorporation of passive solar measure

Page 7: Himachal Pradesh State Co-Operative Bank
Page 8: Himachal Pradesh State Co-Operative Bank

Design features Sunspaces on the southern side Solar wall on the southern side Specially designed solar air heating

system – solar heat collector on roof-top with duct system for supply

to various rooms Double-glazed windows Air-lock lobby at the main entrance

Page 9: Himachal Pradesh State Co-Operative Bank

Design temperature:Design temperature: The design temperature The design temperature was taken to be 18 degree Celsius for was taken to be 18 degree Celsius for winter ,considering that it is customary to be winter ,considering that it is customary to be warmly dressed in winter.warmly dressed in winter.

Limiting conditions to workspaces onlyLimiting conditions to workspaces only:: It was It was decided that passages, lobbies ,stairs ,toilets , and decided that passages, lobbies ,stairs ,toilets , and stores need not be conditioned stores need not be conditioned

Only occupied office work spaces are to be Only occupied office work spaces are to be conditioned.conditioned.

SunspacesSunspaces : :The balconies adjacent to rooms on The balconies adjacent to rooms on the southern face are converted to glazed the southern face are converted to glazed sunspaces. These act as winter gardens and heat sunspaces. These act as winter gardens and heat collectors for the adjacent room thereby reducing collectors for the adjacent room thereby reducing glare , enhancing views ,increasing comfort, and glare , enhancing views ,increasing comfort, and also livening up the main façade.also livening up the main façade.

Page 10: Himachal Pradesh State Co-Operative Bank

Heat-collector wall:Heat-collector wall: The remaining The remaining south facing surface was designed as a south facing surface was designed as a heat collecting wall by placing a heat collecting wall by placing a continuous glass facade on the outer continuous glass facade on the outer face of the building. The wall is clad with face of the building. The wall is clad with dark colored slate and ceramic mural, dark colored slate and ceramic mural, which would be visible .The mural gets which would be visible .The mural gets lit at night as the advertisement of the lit at night as the advertisement of the bank .The heated air from the surface of bank .The heated air from the surface of this wall is drawn out at the top of the this wall is drawn out at the top of the staircase tower .The cool air from the staircase tower .The cool air from the main banking hall gets heated through main banking hall gets heated through convection by the wallconvection by the wall

Page 11: Himachal Pradesh State Co-Operative Bank
Page 12: Himachal Pradesh State Co-Operative Bank

Roof collector:Roof collector: A roof top solar collector A roof top solar collector has been installed .This has been angled at has been installed .This has been angled at 45 degrees to receive the winter sun. The 45 degrees to receive the winter sun. The collector warms up air, which is circulated collector warms up air, which is circulated into the spaces with a blower. An insulated into the spaces with a blower. An insulated air handling room is located below the attic air handling room is located below the attic space.space.

An electrical back-up heating system is An electrical back-up heating system is linked with the solar passive heating linked with the solar passive heating system. This electric bankl is system. This electric bankl is thermostatically controlled and switches on thermostatically controlled and switches on progressively on demand –during mornings progressively on demand –during mornings and prolonged cloudy weather. The sand prolonged cloudy weather. The s

Page 13: Himachal Pradesh State Co-Operative Bank

Rooftop detail for solar collector

Page 14: Himachal Pradesh State Co-Operative Bank
Page 15: Himachal Pradesh State Co-Operative Bank

Day Day lighting and artificial lighting and artificial illumination:illumination: The Artificial The Artificial lighting system has been lighting system has been planned in a manner such that planned in a manner such that the lights could be switched on the lights could be switched on as a supplement to the available as a supplement to the available daylight .This arrangement daylight .This arrangement would not incur any extra cost.would not incur any extra cost.