Building Envelopee Elements and Their Characterization

Transcription

1 International Conference on Energy Efficient Building Design: Experiences and Way forward November 30, 2016, New Delhi Building Envelopee Elements and Their Characterization Rajan Rawal

2 Building Envelope Elements: Walls, Roofs, Fenestrations Image source, Jay Thakkar, CEPT; D.K.Ching Slide 2/14

3 Characterization is Key for Survival and Performance Medical Science Agricultural Science Building Science Slide 3/14

4 Characterization for Energy Efficiency and Thermal Comfort Conduction Convection Radiation Walls Roofs Fenestration Windows/Skylights Materials Components Test Beds Buildings Slide 4/14

5 Characterization of Building Materials & Components Thermal - Opaque Materials Thermal Conductivity Steady State method Heat Flow meter Phase Change Materials W/(m-K) ASTM C-518 Thermal Constant Conductivity to 500 W/(m-K) Diffusivity 0.1 to 100 Sq.mm / sec Specific heat upto 5 MJ/Cu.m-K Solid Liquid Paste and Powder Clay Bricks Cement Mortar XPS EPS Glass wool / Rock wool AAC Blocks Cement Solid Blocks Wood and wood products Polymers Slide 5/14

6 Characterization of Building Materials & Components Hygro Thermal - Opaque Materials Sorption Isotherm Vapour Transmission Water uptake Environmental Chamber Inert Gas mechanical convection oven Laboratory Oven Pressure plates Precision weighing scale ASTM E3054 Clay Bricks Cement Mortar XPS EPS Glass wool / Rock wool AAC Blocks Cement Solid Blocks Wood and wood products Polymers Slide 6/14

7 Characterization of Building Materials & Components Thermal - Opaque Walls Guarded Hot Box Cold and Hot Chamber 1.0m x 1.0m x 350mm (max) U Value to 5 W/m2k ASTM C1363 and ISO Steady State and dynamic Capabilities to simulate weather files Non Homogenous components Hollow Brick Cement Blocks Hollow Cavity Walls Wattle and Daub Mud construction Phase Change material Slide 7/14

8 Characterization of Building Materials & Components Optical Glass and Glass Related Products, Cool Roof Spectrophotometer & FTIR UV, VIS and N-IR Transmittance, Reflectance, Absorptance Emissivity (Cool Roof) - SRI Angular measurements ISO 9050 / EN 410 / ASTM E903 - SP EN 673 FTIR Clear Glass Spectrally Selected Glass Glass Coatings Venetian blinds - louvers Phase Change material Slide 8/14

9 Characterization of Building Materials & Components Optical Window, Movable and Fixed Shading Solar Calorimeter Solar Heat Gain Coefficient Adjusted / resultant Solar Heat Gain Coefficient. Solar Tubes Tubular Daylight devices NFRC 201 Window frames Aluminum, Wood, Steel, upvc Fix and Movable Shading Devices Light Tubes SHGC Laser cut panels Slide 9/14

10 Field Tests Validation Laboratory Prototypes Design Assistance Air Leakages In field Test beds Air Leakage Test for Windows Window Frame, Shutter and Jamb conditions Daylighting apparatus Sky models Shadow analysis Controlled Test Beds Climate Conditions Multiple chambers across climate zones Slide 10/14

11 Living Laboratory NZEB at CEPT University Building Envelopee, Building HVAC, Lighting and Controls, RE Systems Proof of Concepts, Experiments, Development and Validation Naturally Ventilated Mode, Mixed Mode, Air Conditioned Mode Slide 11/14

12 Outputs : Publications, Online tools, Methods, Database, IP, Products, Technologies Slide 12/14

13 Recognition Collaborations Slide 13/14

14 THANK YOU