Comprehensive Certificate Course for BEAM Plus on Energy Use (EU) 2016

Transcription

1 Comprehensive Certificate Course for BEAM Plus on Energy Use (EU) 2016 Session 2 Energy Simulation & Modelling Honorable Speaker Mr Antony Ho ARUP Methodology and data analysis of building energy simulation & Advanced energy modelling Supporting organisations: 16 November 2016 Comprehensive Certificate Course for BEAM Plus on Energy Use (EU) 2016

2 Energy Use Breakdown in 2013 EMSD EEO Sept 2015 ( ) Page 2

3 Electricity Use by Sectors Electricity Use % Electricity used by Buildings Enhance building energy efficiency Effective means to reduce energy consumption EMSD EEO Sept 2015 ( ) Page 3

4 The Situation in HK Buildings have huge impact on Energy and Emissions Account for 63% of overall energy consumption in 2013 Account for 92% of electricity in 2013 Page 4

5 Global & Local Actions on Climate Change Page 5

6 Energy Saving Plan Goal Energy Saving Plan, EnB, HKSAR Page 6

7 Roadmap of Energy Saving HK3030, HKGBC Page 7

8 Contents of this Session Purpose of building energy modelling Build an energy model and key watch-outs How to apply in BEAM Plus Assessments Advanced skills Comprehensive Certificate Course for BEAM Plus on Energy Use (EU) 2016 Page 8

9 Purpose of Building Energy Modelling Comprehensive Certificate Course for BEAM Plus on Energy Use (EU) 2016

10 Simulation & Modelling Pre-design/construction Analysis Replacement of conventional hand calculation Computational advancement Complicate computation Predict what could happen Investigate and understand behaviour Prepare for events Comprehensive Certificate Course for BEAM Plus on Energy Use (EU) 2016 Page 10

11 Modelling Tools for Building Industry Architecture ETABS Computers and Structures, Inc. Structural Engineering Sketch-up Mufasu youtube Design and Construction BIM Autodesk Revit Comprehensive Certificate Course for BEAM Plus on Energy Use (EU) 2016 Page 11

12 Modelling Tools for Building Industry Fire Engineering Sustainable Microclimate Design CFD Housing Authority Exodus Uni. Of Greenwich Lighting Design DIALux Comprehensive Certificate Course for BEAM Plus on Energy Use (EU) 2016 Page 12

13 Building Energy Modelling Comprehensive Certificate Course for BEAM Plus on Energy Use (EU) 2016 Page 13

14 Building Energy Modelling What can be done? Pre-design/construction analysis energy perspective Calculation of building energy consumption Characterize energy uses Evaluate energy efficiency Optimize building design Prioritize investments and strategies Comprehensive Certificate Course for BEAM Plus on Energy Use (EU) 2016 Page 14

15 Build an Energy Model & Key Watch-outs Comprehensive Certificate Course for BEAM Plus on Energy Use (EU) 2016

16 Building Energy Modelling Model building energy performance Interactions of :- Outdoor Environment Indoor Conditions Architectural Design Building Envelop Active Energy Systems Comprehensive Certificate Course for BEAM Plus on Energy Use (EU) 2016 Page 16

17 Building Energy Model Arup Arup Comprehensive Certificate Course for BEAM Plus on Energy Use (EU) 2016 Page 17

18 What are needed to build energy model? Architectural Building floor plans Information of floor height Facade or wall elevation drawings Envelope information: U-value Shading Coefficient Etc. Arup Comprehensive Certificate Course for BEAM Plus on Energy Use (EU) 2016 Page 18

19 What are needed to build energy model? Energy Systems HVAC system Design Brief Design Settings : Temperature, RH Operational Strategies Schematics, Equipment Types and Combinations Performance Parameters : Capacity, Power Rating, COP, Efficiency, etc. Ventilation Design Fresh Air Flowrate Infiltration Assumption Comprehensive Certificate Course for BEAM Plus on Energy Use (EU) 2016 Page 19

20 What are needed to build energy model? Energy Systems Interior Lighting System Design Layout Lighting Power Density Space/Room Type Design of Control Exterior Lighting System Facade & Landscape Design Lighting Power Density Design of Control Comprehensive Certificate Course for BEAM Plus on Energy Use (EU) 2016 Page 20

21 What are needed to build energy model? Energy Systems Elevator and Escalator Hot Water System Type Capacity Efficiency Miscellaneous / Small Power Load Comprehensive Certificate Course for BEAM Plus on Energy Use (EU) 2016 Page 21

22 What are needed to build energy model? Other Parameters Weather File 8,760 hours Schedule of Operation Operating Hours Occupancy Control and Operation Strategies Comprehensive Certificate Course for BEAM Plus on Energy Use (EU) 2016 Page 22

23 Common Build-up of Energy Model Example Rent-out Office Building Landlord Area - Conditioned Lobby Corridor Landlord Area - Unconditioned Exhaust Toilet Plant rooms Staircase Storage area Lift core (w/o lighting power) Comprehensive Certificate Course for BEAM Plus on Energy Use (EU) 2016 Page 23

24 Common Build-up of Energy Model Example Rent-out Office Building Tenant Area - Conditioned Office Meeting / Conference Pantry Storage Comprehensive Certificate Course for BEAM Plus on Energy Use (EU) 2016 Page 24

25 Typical Layout of Build Energy Model Tenancy: Perimeter Zone Tenancy: Core Zone Arup Page 25

26 Key Watch-outs Orientation of Model Perimeter Zone Interpretation of Architectural Components Complexity of Model Comprehensive Certificate Course for BEAM Plus on Energy Use (EU) 2016 Page 26

27 Tenancy: Core Zone Tenancy: Perimeter Zone Organisers: Key Watch-outs N Orientation of Model Where way is North? Perimeter Zone How wide to set? Tenancy: Perimeter Zone Tenancy: Core Zone Arup Arup Page 27

28 Key Watch-outs Interpretation of Architectural Components Wall Thickness Envelope Thickness Internal Spatial Dimensions Iranews Comprehensive Certificate Course for BEAM Plus on Energy Use (EU) 2016 Page 28

29 Key Watch-outs Complexity of Modelling Computation Power Computational Duration Buckingham Place Comprehensive Certificate Course for BEAM Plus on Energy Use (EU) 2016 Page 29

30 Key Watch-outs Complexity of Modelling Simplify Model Group Similarities Functionality Operation Type Orientation Use Repeat for typical floors Arup Comprehensive Certificate Course for BEAM Plus on Energy Use (EU) 2016 Page 30

31 Modelling Results Breakdown of Consumption AE 391 Comprehensive Certificate Course for BEAM Plus on Energy Use (EU) 2016 Page 31

32 Modelling Results Breakdown of Consumption AE 391 Comprehensive Certificate Course for BEAM Plus on Energy Use (EU) 2016 Page 32

33 Modelling Results Annual Consumption Fractions Energy Consumption Patterns in Offices and Retails (Data source : Energy Efficiency Office, HK) Comprehensive Certificate Course for BEAM Plus on Energy Use (EU) 2016 Page 33

34 Building Energy Simulation Software Comprehensive Certificate Course for BEAM Plus on Energy Use (EU) 2016 Page 34

35 Energy Modelling & BEAM Plus Assessment Comprehensive Certificate Course for BEAM Plus on Energy Use (EU) 2016

36 Building Environmental Assessment Method New Buildings Existing Buildings Interiors Page 37

37 Energy Use Aspects Key Assessment Minimum Energy Performance Reduction of CO 2 Emissions Energy Benchmarking Energy Efficient Systems / Equipment Renewable Energy Energy Conservation Energy Management Energy Efficient Building Layout Alternative Route-Passive Design Page 38

38 Energy Modelling for BEAM Plus Tools Tool Version Energy Modelling? New Buildings (NB) V1.1 V1.2 V1.1 Existing Buildings (EB) V1.2 V2.0 Interiors (BI) V1.0 Comprehensive Certificate Course for BEAM Plus on Energy Use (EU) 2016 Page 39

39 BEAM Society Page 40

40 * Route 2 will be covered in coming lecture with EU13 BEAM Society Page 41

41 * Route 2 will be covered in coming lecture with EU13 BEAM Society Page 42

42 EU 1 Reduction of CO 2 Emissions Up to 15 Credits Assessment on CO 2 reduction Take various formats of energy into account Electricity, Gas, & other formats Building Types : Commercial & Hotel Buildings to 45% Educational Buildings to 30% Residential Buildings to 20% Other Building Types to 20% Page 43

43 EU 2 Peak Electricity Demand Reduction Up to 3 Credits Per monthly peak electricity load, identify highest in a year Proposed design to achieve reduction Building Types : Commercial & Hotel 15% / 23% / 30% Educational & Residential 8% / 12% / 15% Other Building Types 8% / 12% / 15% Page 44

44 EU Cr 1 Reduction of CO 2 Emission EU Cr 2 Peak Electricity Demand Reduction Computer Analysis of performance So, if there is One & ONLY One design What is the basis for comparison? How to compare? Page 45

45 EU Pr 1 Minimum Energy Performance Pre-requisite 1 Meet or out-perform Mandatory Code of Practice Energy Efficiency for Building Services Installation (from mid-dec) Page 46

46 Energy Modelling Baseline Hypothetical Baseline Case Adopt Latest BEC 2012(or 2015) & BD PNAP Supplement by ASHRAE 90.1 if any parameters not available Arup Page 47

47 Energy Modelling CO 2 Emission Factors Yearly Simulation Result Electricity 0.7kg-CO 2 /kwh LPG 3.017kg-CO 2 /kg (EPD Guideline) Towngas 3.141kg-CO 2 /Unit (BEAM Circular) Page 48

48 BEAM Society Page 49

49 BEAM Society Page 50

50 BEC Lighting Power Density Office Open Plan 12W/m 2 Hotel Guestroom 13W/m 2 Carpark 5W/m 2 Corridor 8W/m 2 Ball Room 20W/m 2 BEC 2015 Comprehensive Certificate Course for BEAM Plus on Energy Use (EU) 2016 Page 51

51 BEC Chiller Performance BEC 2015 Comprehensive Certificate Course for BEAM Plus on Energy Use (EU) 2016 Page 52

52 BEAM Society Page 53

53 (v1.1 & v1.2) BEAM Society Page 54

54 BEAM Society Page 55

55 BEAM Society Page 56

56 BEAM EB v1.1 & 1.2 Baseline Allowance EU 1 Reduction of CO 2 Emission Baseline x 150% EU 2 Peak Electricity Reduction Baseline x 125% Comprehensive Certificate Course for BEAM Plus on Energy Use (EU) 2016 Page 57

57 Interiors BEAM Society Page 58

58 BEAM Society Page 59

59 BEAM Society Page 60

60 Advanced skills in energy modelling Comprehensive Certificate Course for BEAM Plus on Energy Use (EU) 2016

61 BEAM Society Page 62

62 Integrated Sustainability Analysis Tools Ladybug & Honeybee Parametric Modelling Sustainability Analysis Weather Analysis Radiance Analysis Thermal Comfort Analysis Daylight Analysis Loads & Energy Analysis food4rhino.com food4rhino.com Page 63

63 New Interfaces for Energy Modelling External Energyplus component Energy Modelling via Grasshopper Ladybug & Honeybee Energy plus analysis engine Building loads and energy analysis Visual energy performance on the same building model/geometry Ladybug component Honeybee component Arup ** Currently not suitable for models with more than 50 zones Normalized Cooling Energy Arup Arup Page 64

64 Energy Interactive Design Approaches Building Envelope Design Architectural 3D model from architect Identify key design parameters Walls: Wall U-values/ WWR Windows: Win. U-values/SHGC/Shading etc. Energy Analysis Easy updates of design parameters User friendly energy analysis Visual loads & energy performance Arup Page 65

65 Energy Interactive Design Approaches Interactive Optimization Analysis Genetic algorithm approach - Galapagos Selection of the best combination of design parameters based on energy/loads performance Streamline decisions on the architectural designs building forms, geometry, orientations Arup Page 66

66 Beyond Exemplar Selection the Best Combination for Facade Design & Energy Performance Generic Office Model Arup Arup Arup Galapagos component Sample Project : Hong Kong (Top 10% Results) Cluster in Blue Energy Interactive Approaches Simulated Annealing (SA) methodology via Galapagos component Energy performance for each combination of the 6 design parameters Design preferences: Longer horizontal shading - due to solar altitude Small SC values significant solar heat gain Page 67

67 Summary Purpose of building energy modelling Computational Advancement Key what-outs to build energy models Correct Setup, Zoning, Simplifying How to apply in BEAM Plus Assessments BEAM Plus Baseline Advanced skills in energy modelling Advanced Parametric Studies Comprehensive Certificate Course for BEAM Plus on Energy Use (EU) 2016 Page 68

68 Comprehensive Certificate Course for BEAM Plus on Energy Use (EU) 2016 Session 2 Energy Simulation & Modelling Honorable Speaker Mr Antony Ho ARUP Methodology and data analysis of building energy simulation & Advanced energy modelling Supporting organisations: 16 November 2016 Comprehensive Certificate Course for BEAM Plus on Energy Use (EU) 2016