Standardization in the Green Buildings field Overall energy performance of buildings

Transcription

1 Standardization and Innovation in the Green Buildings Sector Standardization in the Green Buildings field Overall energy performance of buildings Dick (H.A.L.) van Dijk, Senior Scientist at Netherlands Organisation for Applied Scientific Research TNO Co-convenor ISO/TC 163-TC 205 Joint Working Group Energy Performance of Buildings using the Holistic Approach

2 Content 1.Green Buildings 2.Energy performance of buildings (EPB) International standardization - history Principle of overall energy performance of buildings 3.EPB standards and innovation 4.Systemic approach & link with product information 5.Energy Performance of Buildings, the ISO series, work in progress - Slide 2

3 What is a green building A green building Operates energy efficiently Conserves water Is comfortable, safe and healthy Is durable and maintainable with minimal environmental impact Life Cycle: Construction Operation Deconstruction Slide 3

4 Example of Buildings Rating System Categories Category 1 Sustainable Site, Accessibility and Ecology Category 2 Energy Efficiency Category 3 Water Efficiency Category 4 Materials & Resources Category 5 Indoor Environmental Quality Category 6 Management Category 7 Innovation and and Added Value 4

5 Energy performance of buildings (EPB) Slide 5

6 History Bldng envelope & components Bldng heating needs Energy use for heating and cooling Overall building energy performance Energy producing built environment Slide 6

7 Now: Overall energy performance of buildings (EPB) Overall Energy balance (energy use, own production) Requires an integrated and modular set of calculation procedures

8 Since 2009 in ISO ISO/TC 163/WG 4, joint working group of TC 163 and TC 205 Energy Performance of Buildings using the holistic approach Co-convenors: Mr Dick van Dijk (Netherlands) Prof Essam Khalil (Egypt) Inspired by European Energy Performance of Buildings Directive (EPBD)!?! Overall Energy balance (energy use, own production)

9 Systemic approach Today: Think pyramid EP EP expressions EP aggregation Boundaries, classification Collect all energy elements Building energy needs and system energy losses Component input data Boundary conditions

10 Why systemic approach? Product performance Performance in building Slide 10

11 Regulated Buidling Energy Use vs ASHRAE % 100% 90% 80% 70% 60% 50% 40% 30% 20% 10% ASHRAE (USA) Possible Future Roadmap Commercial HVAC Efficiency Requirements Average ASHRAE Requirements ASHRAE 90.1 Building Target Possible Path to nearly Net Zero Buildings 0% Year MaxTech Limit Full Load Efficiency Equipment Level Limit Systems Approach & Renewable Energy Chart is an estimate of possible future regulations to achieve Near Net Zero by 2034 based on studies done by Carrier on technical limits of HVAC equipment Component approach reaches limit Need for systems approach

12 Example: heat recovery unit (ventilation) High performance product: 95% efficiency Applied in building: Duct heat losses? Frost protection? Windows opened? By pass (summer)? Slide 12

13 Example: heat pump High performance product Applied in building: Sufficient capacity? Heat source temperature? Performance Power Slide 13

14 Example: Renewable energy Complex policy issues involved For instance appreciation of: Use of biomass as renewable energy Green electricity produced on site and exported to the grid Use of renewable energy produced at district level. Slide 14

15 Example: Infrared panel heater Claim: significant energy saving, because.. (for instance) Better room temperature distribution Fast response More comfortable Decreased ventilation heat losses Requires detailed model to evaluate claims Complex standard assumptions (for level playing field) Slide 15

16 Overall EP requirements in The Netherlands since 1995 Major innovation motor Research and innovation: New EPB technologies (Inter-)national policies: Regularly tightened minimum EP requirements (Financial) incentives Awareness campaigns EPB Standards: Regularly updated with new technologies EP

17 The Netherlands Transparent long term national policy High perfomance glazing Condensing boilers DC fans Solar hot water systems High performance lighting (offices) Heat recovery & Demand controlled ventilation Heat pumps Combined heat and power Heat recovery showers PV systems Served as one of the examples for the European Directive Future:??!!

18 ISO & CEN: Unique international cooperation CEN/TC 89, Thermal performance of buildings and building components ISO/TC 163, Thermal performance and energy use in the built environment ISO/TC 205, Building environment design ISO JOINT WORKING GROUP Energy Performance of Buildings using holistic approach (ISO/TC 163/WG 4) CEN/TC 371, Project Committee on Energy Performance of Buildings ASHRAE standards Slide 18

19 Work in progress Set of EN ISO standards on Energy Performance of Buildings (EPB): ISO series ISO ISO ISO ISO ISO ISO ISO ISO ISO ISO ISO ISO ISO ISO ISO ISO ISO ISO ISO ISO 52150

20 Conclusions International standards on overall energy performance of buildings A major innovation motor Systemic approach is necessary Challenges: Calculation procedures regarded as complicated Input data from product performance assessment Need to cover wide range of technologies, climates, building types, occupants patterns, policy issues,.. -- Slide 20

21 Questions and suggestions?