The Role of Building Energy Modeling in Design Practice in Indonesia

Transcription

1 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 June 2013

2 The Role of Building Energy Modeling in Design Practice in Indonesia Dr.techn. Rahmi Andarini 6 July /07/2013 BIM WORKSHOP 1 Fact Base Energy crisis Government has to subsidize the domestic use of energy Less subsidies for other sectors (MEMR 2009) 06/07/2013 BIM WORKSHOP 2 1

3 Fact Base Cities Growing Rapidly Jakarta (Megacity) Area : 750 km² Population : 8.5 millions Density : 12,738 /km² Surabaya (Metropolitan) Area : 290 km² Population : 3.23 millions Density : 10,721 /km² 3 Fact Base Energy Consumption s Growing The trend of amount of sold electricity by State Electricity Company DKI Jakarta (Source : PT PLN Persero Jakarta, 2012) 06/07/2013 BIM WORKSHOP 4 2

4 Indonesian ethnic house 06/07/2013 BIM WORKSHOP 5 Indonesia s current situation 6 3

5 Weather Data i.e. Jakarta vs Graz Influence of weather Jakarta, 7.4 South Latitude Graz, 47 North Latitude 06/07/2013 BIM WORKSHOP 7 TYPE DISTRIBUTION OF ENERGY CONSUMPTION 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 & 47,56 3,82 14,82 33,80 Shopping Center 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) 8 4

6 Therefore... Energy efficient buildings are of crucial importance in a context where cities are booming Method on energy efficient building design should be made available The existing standards and guidelines should be more integrated and comprehensive Raising awareness campaign and behaviour changes towards energy effieciency 9 Impact of Energy Efficient Design Source : Müller, C., 1999 The opportunity to change the design is unlimited during the planning stage, and requires no cost 10 5

7 Building Thermal Simulation & Analysis INPUTS SIMULATION RESULT Weather Data Building Geometry Construction Material Internal Gains Schedules People, Equipments, Lightings Infiltration HVAC RECOMMENDATIONS FOR ENERGY EFFICIENT BUILDING SENSITIVITY ANALYSIS

8 16 January, January, July, July,

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10 17 No Scenario Recomendation How 1. Primary Recommendation 1 Improving Lighting Devices o Task Lighting o Rearrange Lighting Zone o Replacing TLT8 with TLT5 o Housekeeping control on lighting Consideration Potential Saving Investment Cost Level of difficulty for Installation 2. Primary Recommendation 2 Recommendation 1 and o Recommendation 1 Improving glazing material o Replacing glaze material with SHGC = 0.371; LT = performance + Chiller 0.309; U value = W/m 2 K Efficiency 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 Level of difficulty for Installation 06/07/2013 BIM WORKSHOP 18 9

11 No Scenario Recomendation How Consideration 3. Secondary Recommendation Floor and Ceiling Material o Using Carpet Floor and Acoustic Ceiling Noise Reduction Investment Cost Level of difficulty for Installation 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 25 O C + 1 O C, efficient use of lighting device, and so on Potential Saving Investment Cost Level of difficulty for Installation 06/07/2013 BIM WORKSHOP 19 I Design Project Graha Kirana Megah 20 10

12 I Design Project Graha Kirana Megah Building Geometry Zoning 21 I Design Project Graha Kirana Megah Solar Heat Gain 22 11

13 I Design Project Graha Kirana Megah Solar Heat Gain 23 I Design Project Graha Kirana Megah Daylighting Alternative I Alternative II Alternative IV 24 12

14 I Design Project Graha Kirana Megah Daylighting Alternative V Alternative VI 25 I Design Project Graha Kirana Megah Cooling 26 13

15 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