Date post: | 04-Jul-2015 |
Category: |
Engineering |
Upload: | srija-kumar |
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Effects of Smart Appliances on
Residential Consumptions Patterns
Thomas Dirienzo, Srija, Nathan Krishnan
Introduction
Overview
Global Energy Consumption
The U.S. is 5% of the
world’s population
http://www.publicpower.org/files/PDFs/2011EconDevConfSteveCollierPresentation.pdf http://www.eia.gov/forecasts/ieo/world.cfm
MWh/Year
Problem
We account for ~20% of
its energy consumption
A System Engineering Overview
Needs Change consumer’s
patterns of consumption
Goals Utilize Smart Appliances
to incentivize reductions
in energy consumption
Objectives Reduce household energy
consumption
Environmental impact
https://nest.com/thermostat/
Overview
Smart Appliances
How they relate to cost + energy savings 1
Residential Scenario
Visualize patterns of consumption 2
Areas of Improvement
The future of energy savings 3
Smart Appliances
System Design & Architecture
Characteristics
Remotely Operable
Usage Data
User Interface
Lower Power
Requirements
Example
Whirlpool
Mobile App
http://products.geappliances.com/ApplProducts/Dispatcher?REQUEST=SpecPage&Sku=GFWH1400DWW
NEST Technical Performance Measures
NEST Shall
Program the user’s
schedule based on
patterns
Keep track of filter
usage + replacement
time
Adjust temperature
based on household
presence
Average savings of
19.5%
Potential savings of
31.6%
https://nest.com/thermostat/saving-energy/
Scenario Analysis
Scenario Analysis
Utilized National
Averages for
Consumption
Simulated 3
Residential
Consumers
Method of
Calculation
Chose 5 Smart
Appliances to analyze
Calculated kWh annual
costs based on each
residents consumption
Plotted annual energy
consumption and costs
Compared with optimal
use & potential savings
Calculations
Calculations
Scenario Analysis
Energy Usage
Identifying high usage
areas
Identify potential
improvements
Cost Comparison
Potential savings of
$83.39/year
Recognizing areas for
recommendations
Cost of Ownership Analysis: Nest
Average annual
household energy
consumption for
cooling in VA:
2268.37 kWh
Percentage VA
households spend
on air conditioning:
9%
# of Residential
Consumers
3,189,118
VA households
consume:
25204.11 kWh Average # hours
away from home
(at work):
8.8 hr/day
Cumulative Savings Analysis
Cost of Honeywell
thermostat on
when occupant is
away:
$88.57 annually
3,189,118
0
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Time (Year)
Nest
Generic brand
Future of Smart Applications
http://www.restorationfitness.net/2012/04/kaizen/10-commandments-kaizen-2/
Environmental Savings Is it reasonable?
Data-driven decision making
Gas Emissions Identifies reductions with
optimal usage
Significant reduction in
footprint if adopted What else
Government incentives
enhancing the benefits
Changing consumer’s
consumption patterns
Preplanned Product Improvement (P3I)
Element 30 and Beyond
Bringing it Home
Boehm’s trend of
increasing software
autonomy
Reason
Appeal to consumers
motivations
Environment
Savings Merging thinking green
with saving green