Virginia Tech Research Center Arlington, Virginia, USA

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1 OPPORTUNITIES FOR ENERGY EFFICIENCY APPLICATIONS IN COMMERCIAL BUILDINGS IN INDIA Professor Saifur Rahman Virginia Tech Advanced Research Institute Virginia, USA Jamia Milia Islamia New Delhi, India 02 June 2016 Virginia Tech Research Center Arlington, Virginia, USA PPT slides will be available at

2 Presentation Outline Present situation of energy usage in commercial buildings Opportunities for energy efficiency applications in commercial buildings Technology and software for energy efficient buildings Electricity Use in Buildings Plug load 6% Others 26% Lighting load 38% HVAC 30% Three major loads in buildings: HVAC Lighting loads Plug loads Electricity use in US buildings Source: EIA - Commercial Building Energy Consumption Survey (CBECS) mption#e1a 4 2

3 Commercial Building Sizes in the US Source: EIA - Commercial Building Energy Consumption Survey (CBECS) umption#e1a Purpose and Objectives of Building Automation Buildings consume over 40% of the total energy consumption in the U.S. Over 90% of the buildings in the U.S. are either smallsized (<5,000 square feet) or medium-sized (between 5,000 sf and 50,000 sf). These buildings typically do not use Building Automation Systems (BAS) to monitor and control their building systems from a central location. A commercial building energy efficiency program can offer energy savings on a day-to-day basis. It can also facilitate Demand Response (DR) when needed. 3

4 Building Automation System (BAS) Scheduled operation Heating, Ventilation and central AC systems Lighting systems Escalator operation 7 Virginia Tech Research Center Arlington, Virginia, USA Leader in Energy Efficient Design (LEED) Gold 8 8 4

5 Efficacy of Light Bulbs Incandescent 15 lumens/watt 1000 hour life CFL 50 lumens/watt 8,000 hour life LED 100 lumens/watt 30,000 hour life Smart Buildings A smart building connects the building automation system with building operations, such as HVAC, lighting, water supply, sensor network and fire emergency. Implementing smart building solutions can provide: up to 30% savings of water usage up to 40% savings of energy usage reduce building maintenance costs by percent Source: Smart Building Market To Grow 30% by 2020, k et-to-gr ow -30-by-2020, December

6 A New Paradigm for Smart Building Operation TM Building Energy Management Open Source Software BEMOSS monitoring and control: BEMOSS value: Micro zonation of loads HVAC Lighting loads Plug loads Improve work environment, occupant comfort and save energy in buildings Prince Street, Alexandria, VA

7 2701 South Tayl or St., Arlington, VA Turner Street, Blacksburg, VA Retailed building: ~50,000 sqft Peak demand: ~160kW Electricity consumption: 4665MWh/month 14 7

8 Smart AC Control 15 Smart Appliance Control Remotely accessible WiFi Plug Load Controller 16 8

9 Ambient Light Sensor Based Control Office space Lighting 17 Sensor/Controller Access CT50 (WiFi) CT80 (ZigBee SE) ICM (WiFi) HVAC Load Controllers 18 Nest (WiFi) CT30 (WiFi) VAV controller (Modbus) RTU (Modbus) Philips Hue (WiFi) Lighting load Light switch (WiFi) controller (BACnet) Lighting Load Controllers Step-dimmed ballast (ZigBee) Sensors/ PowerMeters Power meter (Modbus) Power meter (BACnet/M odbus) Light sensor (BACnet) Occupancy sensor (BACnet) Plug load controller (BACnet) Smart plug (ZigBee) Smart plug (WiFi) Plug Load Controllers 18 9

10 Classroom Wireless Monitoring Power meter Environmental sensor (CO2, noise, temperature, humidity) BEMOSS core Thermostat Motion sensor Plug load controller 19 Deployment in Smart Buildings BEMOSS HVAC Controllers Plug Load Controllers 20 ZigBee mesh ZigBee mesh Lighting Load Controllers 20 10

11 Scalability for Larger Buildings BEMOSS Core Floor 2 Floor 1 BEMOSS Zone 2 BEMOSS Zone 1 21 BEMOSS Scalability: Solutions for Larger Buildings BEMOSS Core Floor 2 Floor 1 X BEMOSS Zone 2 BEMOSS Zone

12 BEMOSS Scalability: Solutions for Larger Buildings BEMOSS Core Floor 2 Floor 1 BEMOSS Zone 1 23 Remote Access Dashboard 24 12

13 Thermostat Monitoring 25 Power Meter Monitoring 26 13

14 Occupancy/Motion Sensor 27 VT BEMOSS - Building Energy Management Open Source Solutions Live Dashboard Home >> Live Dashboard History and Reporting Setting Real-time kw usage HVAC 6.5 kw Lighting loads Plug loads Total Building Consumption 4.3 kw 2.4 kw Real-time weather Daily energy consumption (kwh) Nov 7, 12:00pm Total: 10.2kW HVAC Lighting loads Plug loads Others Today s kwh performance 9.6% 350kWh Partly Cloudy 67 F Chance of Rain 10% Midnight 6am noon Average daily kwh usage 720kWh 28 14

15 US Dept. of Energy Facebook Page 29 Innovative Building Automation System 30 15

16 EV Charging at Virginia Tech Parking Garage in Arlington, Virginia 31 Smart Building Features 1. Building Automation System (BAS) in place: Heating, Ventilation and central AC systems Lighting systems 2. Smart building features: Maintain occupant comfort and convenience Occupancy-based monitoring and control Condition-based lighting control Real-time parking use information Electric vehicle charging stations Onsite battery storage and solar Lower cost building operation 32 16

17 Thank You Professor Saifur Rahman Virginia Tech Advanced Research Institute Virginia, USA ( 17