Virginia Tech Research Center Arlington, Virginia, USA

Transcription

1 Building Energy Management Open-Source Software (BEMOSS) HVAC Controllers BEMOSS Core Lighting circuit(s) Lighting Controllers Plug load Controllers Mason Energy Symposium: Energy Infrastructure May 12, 2017 Saifur Rahman Virginia Tech Research Center Arlington, Virginia, USA 2 PPT slides will be available at 2 1

2 Origins of BEMOSS 3 What is BEMOSS? BEMOSS is a Building Energy Management Open Source Software (BEMOSS) solution that is engineered to improve sensing and control of equipment in small- and medium-sized commercial buildings. BEMOSS monitoring and control: BEMOSS Three major loads in buildings HVAC Lighting loads Plug loads BEMOSS value: Improves energy efficiency and facilitates demand response implementation in buildings. 4 2

3 Broad appeal of BEMOSS Communication Technologies q Ethernet (IEEE 802.3) q Serial Interface (RS-485) q ZigBee (IEEE ) q WiFi (IEEE ) RS-485 Data Exchange Protocols q BACnet (IP and MS/TP) q Modbus (RTU and TCP) q Web (e.g., XML, JSON, RSS/Atom) q ZigBee API WEB q Smart Energy (SE) q OpenADR (Open Automated Demand Response) Smart Energy Profile (SEP) 5 BEMOSS Plug & Play With BEMOSS discovery agent, we know: The device is present in the building. Device model number, e.g., 3M-50. What the device can do, e.g., monitor temperature and adjust set point. BEMOSS automatically discovers new load controllers deployed in a building Sensors/ PowerMeters CT30 Power meter (WiFi) (Modbus) Power CT50 meter (WiFi) (BACnet/M odbus) 6 CT80 (ZigBee SE) ICM (WiFi) Nest (WiFi) HVAC Load Controllers VAV controller (Modbus) RTU (Modbus) Philips Hue (WiFi) BEMOSS Core Light switch (WiFi) Lighting load controller (BACnet) Lighting Load Controllers Step-dimmed ballast (ZigBee) Smart plug (WiFi) Light sensor (BACnet) Occupancy sensor (BACnet) Plug load controller (BACnet) Smart plug (ZigBee) Plug Load Controllers 3

4 BEMOSS: Solutions for Small Buildings BEMOSS Core HVAC Controllers Plug Load Controllers ZigBee mesh ZigBee mesh 7 Lighting Load Controllers BEMOSS Scalability: Solutions for Larger Buildings BEMOSS Core Floor 2 Floor 1 BEMOSS Zone 2 BEMOSS Zone 1 8 4

5 BEMOSS Deployments Building 1 Building 2 Building 3 Building 4 Arlington, VA (5,000 sqft) Control: Lighting load Alexandria, VA (25,000 sqft)` Control: HVAC load Blacksburg, VA (45,000 sqft) Control: HVAC load Camp Springs, MD (45,000 sqft) Control: Monitoring only Savings: 30-40% of lighting load consumption Savings: 10-15% in overall electricity usage Savings: 10-15% in overall electricity usage Savings: N/A Commercial deployment Building 1 VT Building in Alexandria, VA 1021 Prince St., Alexandria, VA Area: 25,000 SF Energy: MWh/mo. Peak load: 61 kw 5

6 Building 1 BEMOSS Deployment Power meter Environmental sensor (CO2, noise, temperature, humidity) BEMOSS core Thermostat Motion sensor 11 Plug load controller Building 1: Alexandria Energy Savings by increasing set points by 2 deg F in a classroom Outdoor temp. Day 1 Outdoor temp. Day 2 Indoor temp. Day 1 Indoor temp. Day 2 Day 1: 06/22/2016 Day 2: 06/01/2016 Setpoint. Day 1 Setpoint. Day 2 Power consumption. Day 1 Power consumption. Day 2 Energy Day 1: 5.29 kwh Day 2: 4.75 kwh 12 Day 1: 6/22/2016, 5.29kWh/day Day 2: 6/01/2016, 4.75kWh/day (10% energy savings with 2 deg set point increase) 6

7 Weather Sensor Integration 13 Building 2 Equipment Bureau Building 2701 S Taylor St, Arlington, VA Office building size: 5,000 sqft Electricity consumption: N/A 14 7

8 Building 2 BEMOSS Deployment 15 Building 2: Arlington Energy Savings by controlling light intensity Based on occupant requirements, light intensity level was reduced during October December Results indicate the average kwh savings of about 34%. Month Total Measured Energy Consumption (kwh) Total Calculated Energy Consumption without Dimming (kwh) Energy Savings by Dimming (%) October % November % December % Total (October- December) % 16 Note: Scheduled dimming level from 6:30am to 9:00pm. Open office area A: 50%; Open office area B: 45%; Chief office s desk area: 60%; Chief office s meeting area: 50%; Conference room A: 50%; Conference room B: 45%. Lights are off after 9:00pm. 8

9 Building 3 Commercial Building in Blacksburg, VA 460 Turner St, Blacksburg, VA Retail building: ~50,000 sqft Peak demand: ~160kW Electricity consumption: 46-65MWh/month 17 Building 3 BEMOSS Deployment 18 9

10 Building 3: Blacksburg Retail Office Building Energy savings by increasing set point by 5 deg F in one suite Similar weather conditions on two weekdays (average ambient temperature 71 deg F). June 6, 2016: day-time cool set point 70 deg F. May 27, 2016: day-time cool set point 75 deg F. 19 Case Day time cool set point Total daily energy usage June 6, May 27, Energy saving 7.4 kwh (14.2%) Increasing temperature set points by 5 deg F results in 14% energy savings for this particular case, when the ambient temperature is 71 deg F on average. Transitioning from a Research Project to a Business

11 BEMOSS -Plus Occupant comfort Demand response BEMOSS -Plus Server Solar PV/Storage Management Energy Savings (kwh) Building Energy Management Peak demand (kw) reduction Alarm & Notifications Security Surveillance Utility/DR Aggregator DR Event Pricing Billing Internet HVAC Lighting loads Plug loads Encrypted Data Link Router Customers/Operators Buildings Sensors/power meters Water meters Renewable & storage Security camera 21 Solar PV and Smart Inverter Integration 22 11

12 Solar PV and Smart Inverter Integration(Cont d) 23 Solar PV and Smart Inverter Integration (Cont d) 24 12

13 Battery Storage Integration Picture 25 How is BEMOSS W Different from Others Commercially Available Monitoring Systems Vera Hub Magnum devices Harmony Hub SmartThings hub 26 13

14 Integrating with Vera BEMOSS -Plus Server 27 Integrating with Magnum BEMOSS -Plus Server 28 14

15 WAS originally designed for building energy management. IS open-architecture for monitoring and controlling IoT devices Plug Load HVAC Load Security Camera Lightin g Load Power Meter Solar PV/ Battery Thank You Saifur Rahman, PhD srahman@bemcontrols.com 30 15