dhe-tm 6 lw day 1 endekatan konsep hemat energi - jatmika adi(1)

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    Pendekatan Konsep Hemat Energi

    pada Proses Pelaksanaan Desain

    Gedung Baru

    Jatmika Adi Suryabrata,

    Dept. of Architecture, Gadjah Mada University

    [email protected]

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    Typical energy consumption for large office: Hawaii

    Around 50% to 70% of

    energy consumption in

    typical office building

    goes to HVAC and lighting

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    Breakdown cooling loads: dominated by external heat gain

    60%

    3%

    6%

    23%

    8%

    Windows

    Walls

    Lighting

    Equipment

    Occupancy

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    Thermal Comfort Basics:

    M Rd Cv Cd = S

    Rd

    Rd

    Rd

    CdCd

    Rd

    Cv

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    Olgyay s bioclimatic chart, modified for warm climates

    Bioclimatic ChartApproximate of tropical climates

    SNI: 25C

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    Orientation & solar heat gain

    Horizontal

    roof

    Vertical

    South

    Vertical

    East & West

    Vertical

    North

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    Building Form & Orientation: FISIP UIN Jakarta

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    Building Form & Orientation: FISIP UIN Jakarta

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    Building Form & Orientation: Gedung Menteri, Kementrian PU

    Originalblock plan:

    Larger area of the building is

    orientedto east and west

    http://f/press/PRESS%20MENTERI%202007/27%20juli-sda%20final.wmvhttp://f/press/PRESS%20MENTERI%202007/27%20juli-sda%20final.wmvhttp://f/press/PRESS%20MENTERI%202007/27%20juli-sda%20final.wmvhttp://f/press/PRESS%20MENTERI%202007/27%20juli-sda%20final.wmv
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    Original building form Modified building form

    Modified Building form:

    1. Reduced surface exposure of the working spaces to east and west sun

    2. Narrow building form improve daylight performance

    Building Form & Orientation: Gedung Menteri, Kementrian PU

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    Light shelf better daylight distribution

    Return air

    Gedung Menteri, Kementrian PU: Lightshelves & thermal insulation

    thermal insulation

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    Gedung Menteri, Kementrian PU: Mockup Lightshelves

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    Gedung Menteri, Kementrian PU: Daylight performance

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    An example of daylighting with lightshelves: D3 Faculty of Economics, UGM

    Room width 8 m, an average of 200 lux is obtained at the center of the room with

    all draperies are closed.

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    Common problem in Jakarta: curtain glass wall with closed vertical blinds

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    Horizontal blinds & lightshelves for better daylight control anddistribution

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    Gedung Menteri, Kementrian PU: Image impressions

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    Sun shading & double facades: an example (WS Atkins Architects)

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    Integrated vertical transportation: discourage using elevator/lift

    Gedung Menteri PU, Jakarta FISIP-UIN, Jakarta

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    Olgyay s bioclimatic chart, modified for warm climates

    Bioclimatic Chart: Increasing heat loss through convection

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    Air speed required to offset temperature increase(Marc E. Fountain and Mward A. Arens, Ph.D)

    Occupants can offset an increased thermostat setting of 4.7F (2.6C)

    by providing 160 fpm (0.8 m/s) of low-cost air flow from circulator fans

    and enjoy normal comfort while saving air conditioning operating cost.

    On the basis of the Exeloncorp (2005) recommendation, an increase in

    the thermostat setting of 4.7F would provide cooling energy savings

    from 14% to 19% (Dr. Richard Aynsley)

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    Combination of ceiling fan and Air Conditioning: Dept of Arch, UGM

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    Automatic control & sensors for effective energy management

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    Radiant cooling system:

    Reduce MRT to compensate for higher temperature setting

    M Rd Cv Cd = S

    Rd

    RdRd

    CdCd

    Rd

    Cv

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    2nd floor

    chiller and

    HVAC

    equipments

    Concrete Core

    TemperatureControl

    Much more

    efficient

    Than

    conventional

    HVAC

    Austrian embassy, Jakarta: Radiant Cooling System

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    Brick Wall

    Insulation

    Window with

    double-glazing

    Brick Wall

    Insulation

    Austrian embassy, Jakarta: high performance insulation

    Wood

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    High performance thermal insulation for the entire building

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    Austrian embassy, Jakarta: Front elevation

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    Energy Efficient lighting design: select the appropriate luminaire

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    Energy Efficient lighting design: create brighter interior surfaces with up

    lighting & wall washer

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    Energy Efficient lighting design: task and general lighting

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    Owner

    requirements

    Integrated Design

    Team

    Monitoring:

    Design phase

    Construction phase

    Operational

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    Thank you