The Role of Building Energy Modeling in Design Practice in ...mddb.apec.org/Documents/2013/SCSC/WKSP5/13_scsc_wksp5_015.pdf · The Role of Building Energy Modeling in Design ... 06/07/2013

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2013/SOM3/SCSC/WKSP2/015 Session 6

The Role of Building Energy Modeling in Design Practice in Indonesia

Submitted by: Indonesia

Joint APEC-ASEAN Workshop - How Building Information Modeling Standards

Can Improve Building Performance Medan, Indonesia

24-25 June 2013

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BIM WORKSHOP06/07/2013

The Role of Building Energy Modeling in Design Practice in Indonesia

Dr.techn. Rahmi Andarini6 July 2013

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Fact Base•Energy crisis•Government has to subsidize the domestic use of energy•Less subsidies for other sectors

(MEMR 2009)

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Jakarta (Megacity)Area : 750 km²Population : 8.5 millions Density : 12,738 /km²

Surabaya (Metropolitan)Area : 290 km²Population : 3.23 millions Density : 10,721 /km²

Fact BaseCities Growing Rapidly


The trend of amount of sold electricity by State Electricity Company DKI Jakarta (Source : PT PLN Persero Jakarta, 2012)

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Fact BaseEnergy Consumption’s Growing

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Indonesian ethnic house

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Indonesia’s current situation

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Weather Data i.e. Jakarta vs Graz

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Influence of weather

Jakarta, 7.4° South Latitude Graz, 47 ° North Latitude


DISTRIBUTION OF ENERGY CONSUMPTION TYPE

AC (%)

ELEV/ESC. (%)

LIGHTING (%)

OTHERS (%)

1. Office a. Government 46,80 1,80 21,10 30,30 b. Private 45,74 3,20 21,00 30,05 2. Shopping Center 51,55 4,78 18,57 25,10 3. Office & Shopping Center

47,56 3,82 14,82 33,80

4. Hospital a. Public 60,25 4,43 10,82 24,50 b. Private 62,04 4,27 11,77 21,92 5. Hotel a. Five Stars 60,18 6,44 14,54 18,84 b. Four Stars 60,15 7,68 9,57 22,40 c. Three Stars 65,40 16,10 10,40 8,10 6. Mall 51,90 0,92 11,95 35,20 7. Apartment 53,45 6,75 12,25 27,55 Source : KONEBA, PT. 2006, Survey results in 60 buildings in Jakarta, Indonesia.

Cooling dominates the energy consumption!!!

Energy Consumption for Commercial Building (PT Koneba, 2006)

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• Energy efficient buildings are ofcrucial importance in a context wherecities are booming

• Method on energy efficient building design should be made available

• The existing standards and guidelinesshould be more integrated and comprehensive

• Raising awareness campaign and behaviour changes towards energy effieciency

Therefore...


The opportunity to change the design is unlimited during the planning stage, and requires no cost

Source : Müller, C., 1999

Impact of Energy Efficient Design

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Building GeometryWeather Data

INPUTS

Construction MaterialInternal Gains

SIMULATION

Schedules People, Equipments, Lightings

InfiltrationHVAC

RESULT

SENSITIVITY ANALYSISRECOMMENDATIONS

FOR ENERGY EFFICIENT BUILDING

Building Thermal Simulation & Analysis


Case IRenovation Project DGNREEC ‐MEMR

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16 January , 09.00 16 January , 15.00



16 July , 09.00 16 July , 15.00


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No Scenario Recomendation

How Consideration

1. Primary Recommendation 1Improving Lighting Devices o Task Lighting

o Rearrange Lighting Zone o Replacing TLT8 with TLT5 o Housekeeping control on lighting

Potential Saving

Investment Cost

Level of difficulty for Installation

2. Primary Recommendation 2Recommendation 1 and Improving glazing material performance + Chiller Efficiency

o Recommendation 1o Replacing glaze material with SHGC = 0.371; LT =

0.309; U value = 5.797 W/m2 K o Chiller Effiency by:

Conduct online measurement to test overall chillers condition

Check performance of AHUs Replace the old control valve of AHU House Keeping and Maintenance

Potential Saving

Investment Cost


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No Scenario Recomendation

How Consideration

3. Secondary RecommendationFloor and Ceiling Material

o Using Carpet Floor and Acoustic Ceiling

Noise Reduction

Investment Cost


4. Additional Recommendation Improving Operational Procedure

o Installing power meter for MVAC, Lighting, and Plug load separately, so that the energy consumption of each load can be monitored.

o Installing BAS in order to monitor & control the energy consumption

o Occupant education to increase the awareness of energy efficiency, such as broadly campaign that the comfort indoor air temperature is 25OC + 1OC, efficient use of lighting device, and so on

Potential Saving

Investment Cost


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Case IIDesign Project Graha Kirana Megah

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Building GeometryZoning



Solar Heat Gain

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Solar Heat Gain



Daylighting

Alternative I Alternative II Alternative IV

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Alternative V Alternative VI


Daylighting



Cooling

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Conclusions

• Building Thermal Simulation is an effective design tool towards Energy efficient buildings

• Building thermal simulation should be included in the standard/guideline of energy efficient buildings.
