Presentation Outline

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1 OPPORTUNITIES FOR ENERGY EFFICIENCY APPLICATIONS IN COMMERCIAL BUILDINGS IN BANGLADESH Professor Saifur Rahman Virginia Tech Advanced Research Institute Virginia, USA Mechanical Engineering Division, IEB Dhaka, Bangladesh, 04 Jan 2016 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 1

2 Electricity Use in Buildings Plug load 6% Others 26% Ligh9ng load 38% HVAC 30% Three major loads in buildings: HVAC Ligh9ng loads Plug loads Electricity use in US buildings Source: EIA - Commercial Building Energy Consump9on Survey (CBECS) hfp:// view=consump9on#e1a 3 Commercial Building Sizes in the US Source: EIA - Commercial Building Energy Consump9on Survey (CBECS) hfp:// view=consump9on#e1a 2

3 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. Building Automation System (BAS) Scheduled operation Heating, Ventilation and central AC systems Lighting systems Escalator operation 6 3

4 Virginia Tech Research Center Arlington, Virginia, USA Leader in Energy Efficient Design (LEED) Gold 7 7 Energy Efficiency in Bangladesh Primary and secondary energy savings: 10% by % by % by

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, smart-building-market-to-grow-30-by-2020, December

6 A New Paradigm for Smart Building Operation TM Building Energy Management Open Source Software BEMOSS monitoring and control: Micro zona9on of loads HVAC Ligh9ng loads Plug loads BEMOSS value: Improve work environment, occupant comfort and save energy in buildings 11 Smart AC Control 12 6

7 Smart Appliance Control Remotely accessible WiFi Plug Load Controller 13 Ambient Light Sensor Based Control Office space Lighting 14 7

8 Sensor/Controller Access CT50 (WiFi) CT80 (ZigBee SE) ICM (WiFi) HVAC Load Controllers 15 Nest (WiFi) CT30 (WiFi) VAV controller (Modbus) RTU (Modbus) Philips Hue (WiFi) Light switch (WiFi) Lighting load controller (BACnet) Lighting Load Controllers Step-dimmed ballast (ZigBee) Smart plug (WiFi) Sensors/ PowerMeters Power meter (Modbus) Power meter (BACnet/ Modbus) Plug load controller (BACnet) Smart plug (ZigBee) Light sensor (BACnet) Occupancy sensor (BACnet) Plug Load Controllers 15 Classroom Wireless Monitoring Power meter Environmental sensor (CO2, noise, temperature, humidity) BEMOSS core Thermostat sensor Plug load controller 16 8

9 Deployment in Smart Buildings BEMOSS WiFi WiFi HVAC Controllers WiFi ZigBee WiFi WiFi ZigBee Plug Load Controllers 17 ZigBee mesh Lighting Load Controllers ZigBee mesh 17 Scalability for Larger Buildings BEMOSS Core Floor 2 Floor 1 BEMOSS Zone 2 BEMOSS Zone

10 Remote Access Dashboard 19 Thermostat Monitoring 20 10

11 Power Meter Monitoring 21 Occupancy/Motion Sensor 22 11

12 US Dept. of Energy Facebook Page 23 Innovative Building Automation System 24 12

13 EV Charging at Virginia Tech Parking Garage in Arlington, Virginia 25 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 26 13

14 Thank You Professor Saifur Rahman Virginia Tech Advanced Research Institute Virginia, USA ( 14