master\'s project presentation
DESCRIPTION
A computer-based simulation program was used to evaluate the impact of appliance efficiency in buildings.TRANSCRIPT
The Impact of Appliance Efficiency on Building Energy Performance
-Case Study for China-Singapore Tianjin Eco-city
Hua Fan Environmental Economics and Policy
April 8, 2010
Research Question
Will improved appliance efficiency reduce energy use and cost?
www.voxhub.com www.ir55.com
Source: www.tianjinecocity.gov.sg
350,000 residents
Buildings40%
Transportation28%
Industry32%
12%
84%
4%Manufacturing & construction
Daily Operation
Maintenance
Source: DOE
Source: Building and Environment Vol. 32 No. 4, 1997
36%
12%15%
37%
Source: EIA RECS
Space HeatingSpace CoolingWater HeatingAppliances & Lighting
A complicated value chain…
…with many stakeholdersSource: WBCSD
Adapted from eQuest Introductory Tutorial
eQUEST-the QUick Energy Simulation Tool
Peak demand
Utility bills
Energy use
Mid-rise prototype High-rise prototype
www.ie-ashrae.org
www.xinjin.gov.cn www.gome.com.cn
10am 11am 12pm 1pm 2pm 3pm 4pm 5pm 6pm 7pm 8pm 9pm 10pm0
100
200
300
400
500
600Weekdays
Watt
10am 11am 12pm 1pm 2pm 3pm 4pm 5pm 6pm 7pm 8pm 9pm 10pm0
100
200
300
400
500
600Weekends
Watt
Grade 1Grade 2Grade 3Grade 4Grade 5
46000 47000 48000
Grade 1
Grade 2
Grade 3
Grade 4
Grade 5
620 630 640 650
Mid-rise prototype
Grade 1Grade 2Grade 3Grade 4Grade 5
120000 123000 126000 129000
High-rise prototype
Grade 1
Grade 2
Grade 3
Grade 4
Grade 5
2940 2960 2980 3000 3020 3040
Annual electricity use (kWh)
Annual steam use (MBTU)
Space Cooling
Space Heating
Grade 1
Grade 2
Grade 3
Grade 4
-2.0% -1.0% 0.0% 1.0% 2.0% 3.0%
Mid-rise prototype
Grade 1
Grade 2
Grade 3
Grade 4
-4.5% -3.0% -1.5% 0.0% 1.5% 3.0%
Space Heating Space Cooling
High-rise prototype
Percentage Changes in Energy Consumption
Grade 1 Grade 2 Grade 3 Grade 4
-20
-10
0
10
20
30
Space HeatingSpace Cooling Appliances
Grade 1 Grade 2 Grade 3 Grade 4
-100
-50
0
50
100
150
Space HeatingSpace CoolingAppliances
(MBTU)
Annual Energy Savings
(MBTU)
Grade 1
Grade 2
Grade 3
Grade 4
Grade 5
0.0%
1.0%
2.0%
Annual saving ($)
Grade 1
Grade 2
Grade 3
Grade 4
Grade 5
-1000
0
1000
2000
3000
Steam Electricity
Grade 1
Grade 2
Grade 3
Grade 4
Grade 5
0.0%
2.0%
4.0%
6.0%
Peak load percentage savingGrade
1Grade
2Grade
3Grade
4Grade
5-200
0
200
400
600
800
Mid-rise prototype High-rise prototype
Conclusions
Improved appliance efficiency will make a building
• use more steam for space heating
• use less electricity for space cooling
• reduce peak load;
• cut the overall energy cost.
Acknowledgements
• Dr. Lynn Maguire• Stanback Fellowship Program• Rocky Mountain Institute Built Environment
Team (Kendra Tupper, Caroline Fluhrer…)• Nicholas School (thanks everyone!)• Family and friends
Questions?