transcript
- Slide 1
- ME 4343 HVAC Design The Impact of Occupancy Behavior Patterns
On the Energy Consumption in Low-income Residential Buildings Bing
Dong 1, Yifei Duan 1, Rui Liu 2, Taeg Nishimoto 2 1 Building
Performance and Diagnostics Group, Mechanical Engineering, the
University of Texas, San Antonio, TX, USA 2 College of
Architecture, the University of Texas, San Antonio, TX, USA
- Slide 2
- Introduction Large gaps between measured performance and
simulated results Source: NBI report 2008 Energy Performance of
LEED For New Construction Buildings
- Slide 3
- Introduction Occupancy behavior (OB) has significant influence
on building energy use
- Slide 4
- Introduction People spend most of time at homes Based on
American time user survey data (ATUS)
- Slide 5
- Introduction Occupancy behavior is a key factor influencing
building energy consumption and indoor environment Climate
Condition Building Envelope Building Systems Building Occupancy
Behavior Occupancy Presence Occupancy Activities Occupancy
Operation Energy Consumption
- Slide 6
- UTSA Occupancy Test-beds Three+1 project for Westside low
income houses A collaborative project of UTSA the San Antonio
Alternative Housing Corporation, and the Texas Department of
Housing and Community Affairs Honorable Mention for Research and
Education in Residential Construction, presented by City of San
Antonio Green Building Awards, 2013
- Slide 7
- Introduction SIPs House 1,073sf AAC House 1,019sf Container
House 1,106sf Stick House 1,000sf
- Slide 8
- Instrumentation Powerhouse Dynamics e-Monitor Temperature
Sensor Nonintrusive Sensor Network
- Slide 9
- Energy Consumption Total Monthly Energy Consumption # of
Occupants at homes 22443 Stick
- Slide 10
- Behavior 1: Thermostat Schedule All four houses thermostat
schedule August 12 to August 19, 2013 DOE Benchmark
- Slide 11
- Behavior 1: Thermostat Schedule HVAC working status for 1 week
On SIP house AAC house Off
- Slide 12
- Behavior 1: Thermostat Schedule Energy Consumption of HVAC for
1 week(12/8-19/8) Energy Consumption (kWh)
- Slide 13
- Behavior 2: Usage of Major Appliances Energy Consumption of
Stick House for 5 months Building Energy Data Book (2009) Cooling
and Heating 45%
- Slide 14
- Behavior 2: Usage of Major Appliances (Water Heater) Energy
Consumption of Water Heater for 1 week(12/8-19/8) Energy
Consumption (kWh)
- Slide 15
- Behavior 2: Usage of Major Appliances (Water Heater)
SIPStickATUS
- Slide 16
- Behavior 3: Occupancy Movement Occupancy movement in SIP house
Temperature Profiles of living room and master bedroom of SIP house
Living Room
- Slide 17
- Behavior 3: Occupancy Movement Living Room in SIP house
(aggregated one week data) High Probability
- Slide 18
- Behavior 3: Occupancy Movement Kitchen in SIP house (aggregated
one week data)
- Slide 19
- Integrate with Energy Models Occupancy Movement Patterns New
Thermostat Schedule Building Controls Virtual Test bed (LBNL)
Measured Energy and Temperature Data Energy Saving: 15% Comfort
time Increase: 25% Appliances
- Slide 20
- Conclusion and Future Work In this study, we present occupancy
behavior and energy usage patterns in four low income houses We
also demonstrate possible energy savings based on occupancy
movement In future studies, we will: Develop statistical models to
describe occupancy behavior in buildings. Integrate with energy
consumption patterns
- Slide 21
- IEA Annex 66 IEA Annex 66 Definition and Simulation of Occupant
Behavior in Buildings. 23 countries and regions UTSA BPD group is
task leader of subtask 1.
- Slide 22
- Acknowledgement