RFID SYSTEM FOR INTELLIGENT FACADES IN SOUTHERN COUNTRIES

Transcription

1 15th INTERNATIONAL OPERATIONS & MAINTENANCE CONFERENCE IN THE ARAB COUNTRIES UNDER THE THEME: SMART MAINTENANCE CONICIDE WITH THE 15 TH ARAB MAINTENANCE EXHIBITION RFID SYSTEM FOR INTELLIGENT FACADES IN SOUTHERN COUNTRIES Dr.-Ing. Ayman Bishara

2 Outline Agenda Motivation RFID transponder system Model calibration and evaluation of measurements Conclusion 2

3 Motivation Energy consumption in Arabic region = 4 times the average one of the rest of the world (OAPEC 2015) 3

4 Heating energy consumption kwh/m 2 a Motivation Development of energy saving in Germany Energy saving: Environmental protection, CO2- reduction, reduction of operation costs building regulations, standards, EnEV`S solar buildings construction practice low energy buildings research, demonstration projects 3- liter houses zero heating buildings Plus energy houses 4

5 Motivation Performance and quality of External Thermal Insulation Composite System (ETICS) for sustainable buildings in the Arabic region Sofitel Hotel, JBR, Dubai Tallest tower to be insulated with ETICS. At 143 meters making sure the system would withstand all applied loads while maintaining architectural design was the biggest challenge (2007) 5

6 Conventional measuring system Previous (wired) measuring systems - High installation effort - High costs - Destructive measurement - Cause of thermal bridges We need an innovative measurement system. RFID measuring system - Intelligent construction - Material identification - Cost reduction - Quality intensification - Culture enhancement 6

7 RFID Transponder System 7

8 RFID Transponder System Classification of transponder technology Transponder systems Passive system Semi-passive system Active system Only ID Data Sensor Sensor Point to point Sensor network Local LF, HF, UHF, µw LF, HF, UHF, µw UHF, µw, UWB 8

9 RFID Transponder System Structure and basic operation of an RFID system Information system RFID- Reader Antenna Tact energy Data Antenna Antenna Antenna Chip Transponder Chip Transponder Chip Transponder 9

10 RFID transponder system Passive transponder for ID and sensor applications Block diagram layout scheme of the humidity and temperature transponder 10

11 RFID transponder system Active / passive temperature and humidity transponder battery sensor sensor antenna 11

12 RFID transponder system Reading out process Energy Readercontrol Radiofrequency field Data-transfer - Reader transmits power, data and tact - Transponder transmits back measured T&RH 12

13 Case study at Ras al Khaimah (UAE) Application of the RFID transponder system in a practical case study in UAE Reference cubicle box without insulation EPS (Dalmatiner) Mineral wool Hemp Hemp B4 B1 B3 B2 Standard cubicles at RAKRIC 13

14 Case study at Ras al Khaimah (UAE) Position of the T/RH Transponder external außen T/RH T/rH T/rH T/RH internal innen Interior climate T/RH Innenklima T/rH Abbildung 6: Lage der Datenlogger im Bauteil (Außenwand) mit Innenklimasensor 14

15 U-value [W/(m²K)] Results Comparison of thermal transmittance (U-value) of the 4 boxes Evaluated from measurement Expected from theory 15

16 Relative humidity (%) Temperature ( C) Results Temperature and relative humidity between wall and insulation (Box 3, mineral wool) Feuchte RH (%) Temp (C) Time 16

17 Relative humidity (%) Temperature ( C) Results Calibration of the simulation model Comparison of measured and calculated T/rh (Box3 insulated with mineral-wool) Humidity meas. (%) Humidity sim. (%) Temperature meas. ( C) Temperature sim. ( C) Time 17

18 Water content [Kg/m³] Water content [Kg/m³] Water content [Kg/m³] Results Numerical simulation results for Box 3 (water content of mineral-wool (MW)) On MW, mineral plaster without vapor barrier On MW, mineral plaster with vapor barrier On MW, plaster with organic binder Year 1 Year 2 Year 3 Year 4 Year 5 14 kg kg 0.01m = 0.14 m³ m² = 140 g m² < 200 g m² Year 1 Year 2 Year 3 Year 4 Year 5 Year 1 Year 2 Year 3 Year 4 Year 5 Does not exceed the standard value (European Standard EN ISO 13788) 18

19 Conclusion An innovative wireless transponder system (RFID) with integrated hygrothermal sensor has been developed. Using the RFID sensor system, the functionality of ETICS could be shown under hot climate conditions the system can be monitored permanently which contributes significantly to the prevention of structural damage. The optimization of the hygrothermal conditions using ETICS under hot climate conditions could be achieved. For the case study in UAE, the avoidance of moisture pentation from outside into the construction is key for a long-term damage-free ETICS system. ETICS has a big effect of significantly reducing heat flow through the outer wall under hot climatic conditions. 19

20 Thank you for your attention 20