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

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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