2009 abc green building class presentation
TRANSCRIPT
June 4, 2009Presented By: James Petersen, PE
Petersen Engineering, Inc.
ABC Green Building ClassEnergy Efficiency: Heating,
Cooling and Lighting
June 4, 2009 The Jordan Institute - ABC Green Building Class Petersen Engineering, Inc.
June 4, 2009 The Jordan Institute - ABC Green Building Class Petersen Engineering, Inc.
Figure 1, Annual combined natural gas and electricity consumption. 2006 and 2007 display significant savings resulting from first round of energy efficiency measures. Target rates assume a goal of 75% gas and 25% electricity mix given as a typical mix for
a building with this occupancy in this region from the EnergyStar Target Finder Program.
Annual Combined Gas and Electric Energy Consumption for Community Campus
48 4262 64 65 61
46 4016
9088
144 147 144
114
7072
47
2 2 17
6 75 0
0
50
100
150
200
250
2000 2001 2002 2003 2004 2005 2006 2007 2008YTD
75% 90%
[kB
tu /
ft2
- y
r]Target Gas
Target Electric
Measured Gas
Measured Electric
137
* Target consumption rates from USEPA / USDOE Energystar Target Finder program** 2008 YTD Figures include electric data through May billing and natural gas data through April billing.
130
207 211 208
175
116 112
63
89
66
June 4, 2009 The Jordan Institute - ABC Green Building Class Petersen Engineering, Inc.
Figure 2, Annual energy cost per square foot of space. Over the span of this data the average annual price of natural gas has increased from $0.74/therm in 2000 to $1.38/therm in 2008 with the latest gas price for April 2008 at $1.53/therm.
Community Campus Annual Energy Cost per Unit Area
$1.6
2
$1.3
5
$1.7
2
$1.8
5
$2.0
2
$2.1
6
$1.8
1
$1.8
1
$0.5
9
$0.6
6
$0.8
2
$0.9
9
$1.0
7 $1.3
4
$1.1
2
$0.8
0
$0.9
7
$0.9
7
$0.00
$0.50
$1.00
$1.50
$2.00
$2.50
$3.00
$3.50
2000 2001 2002 2003 2004 2005 2006 2007 2008YTD
[Do
llars
/ ft
2]
Gas
Electricity
$ 2.29$ 2.18
$ 2.72$ 2.92
$ 3.36 $ 3.27
$ 2.61$ 2.78
$ 1.56
* 2008 YTD Figures include electric data through May billing and natural gas data through April billing.
June 4, 2009 The Jordan Institute - ABC Green Building Class Petersen Engineering, Inc.
Figure 3, Monthly electricity usage. Note the significant reduction starting in October 2005 when energy efficiency measures started to be implemented.
Community Campus Monthly Electrical Usage
0
50,000
100,000
150,000
200,000
250,000
1 2 3 4 5 6 7 8 9 10 11 12
Month
Ele
ctri
cal U
sag
e [K
WH
]
0
100
200
300
400
500
Co
olin
g D
egre
e-D
ays
[°F
-Day
/ m
o]
200820072006200520042003200220012000CDD
June 4, 2009 The Jordan Institute - ABC Green Building Class Petersen Engineering, Inc.
Figure 4, Monthly natural gas usage. Natural gas also experienced a significant reduction in use following implementation of energy efficiency measures. Note however an increase in natural gas usage during the 2007-2008 heating season starting in
November 2007. There also is likely more room for improvement in the summer time gas usage.
Community Campus Monthly Natural Gas Usage
0
2,000
4,000
6,000
8,000
10,000
12,000
14,000
16,000
18,000
20,000
1 2 3 4 5 6 7 8 9 10 11 12
Month
Gas
Usa
ge
[Th
erm
s]
-1200
-900
-600
-300
0
300
600
900
1200
1500
Hea
tin
g D
egre
e-D
ays
[°F
-Day
/ m
o]
200820072006200520042003200220012000HDD
June 4, 2009 The Jordan Institute - ABC Green Building Class Petersen Engineering, Inc.
Figure 5, Annual Electrical Usage. 2006 experienced a 27% reduction from the average of 2002 through 2005 usage. 2007 had a 37% reduction from the same period and 2008 is thus far tracking for similar results.
Community Campus Annual Electrical Usage
1,1
42
,80
0
1,0
13
,80
0
1,5
01
,20
0
1,5
49
,40
0
1,5
57
,00
0
1,4
67
,00
0
1,1
06
,60
0
96
2,4
00
38
4,0
00
0
500,000
1,000,000
1,500,000
2,000,000
2000 2001 2002 2003 2004 2005 2006 2007 2008YTD
[kW
h]
* 2008 YTD Figures include electric data through May billing.
June 4, 2009 The Jordan Institute - ABC Green Building Class Petersen Engineering, Inc.
Figure 6, Annual Electricity Costs. In 2006 and 2007 energy efficiency measures saved $82,566 in electricity costs from the 2005 annual costs.
Community Campus Annual Electrical Cost
$1
33
,35
4
$1
10
,88
9
$1
41
,37
2
$1
51
,82
2
$1
65
,98
4
$1
76
,94
9
$1
48
,57
2
$1
22
,76
0
$4
8,3
00
$0
$20,000
$40,000
$60,000
$80,000
$100,000
$120,000
$140,000
$160,000
$180,000
2000 2001 2002 2003 2004 2005 2006 2007 2008YTD
`
* 2008 YTD Figures include electric data through May billing.
June 4, 2009 The Jordan Institute - ABC Green Building Class Petersen Engineering, Inc.
Figure 7, Annual natural gas usage. 2006 and 2007 experienced a more than 50% reduction in natural gas usage from the average of 2002 through 2004 usage. The weather adjusted data normalizes the natural gas data for the average number of
heating degree days for 2000 through 2007.
Community Campus Annual Natural Gas Usage
72,3
81
120,
697
117,
819
93,8
39
57,8
39
59,3
20
38,9
50
72,5
18
74,2
68
115,
979
115,
692
90,7
62
63,6
01
58,3
82
39,4
70
118,
422
73,7
51
119,
195
010,00020,00030,00040,00050,00060,00070,00080,00090,000
100,000110,000120,000130,000
2000 2001 2002 2003 2004 2005 2006 2007 2008YTD
[Th
erm
s]Actual Usage
Weather Adjusted
* 2008 YTD Figures include natural gas data through April billing.
June 4, 2009 The Jordan Institute - ABC Green Building Class Petersen Engineering, Inc.
Figure 8, Annual natural gas costs. In 2005, 2006 & 2007 energy efficiency measures saved $93,369 from the peak cost of 2004. These savings were despite the fact that the average annual gas cost per therm increased from $0.93/therm in 2004 to $1.34 in
2007.
Community Campus Annual Natural Gas Costs
$81,
566
$88,
128
$110
,083
$91,
628
$65,
797
$79,
455
$53,
574
$67,
702
$54,
555
$0
$20,000
$40,000
$60,000
$80,000
$100,000
$120,000
2000 2001 2002 2003 2004 2005 2006 2007 2008YTD
* 2008 YTD Figures include natural gas data through April billing.
June 4, 2009 The Jordan Institute - ABC Green Building Class Petersen Engineering, Inc.
Figure 9, Heating Season natural gas usage. Note that the most recent heating season experienced a 40 % increase in weather adjusted gas consumption over the previous year. This finding reverses the trend of declining gas usage since the energy
efficiency measures were implemented in 2005.
Community Campus Heating Season Natural Gas Usage
41
,28
0
37
,75
1
55
,36
1
73
,06
6
70
,90
6
44
,38
3
38
,65
4
54
,25
1
74
,81
6
73
,16
3
0
20,000
40,000
60,000
80,000
2003-2004 2004-2005 2005-2006 2006-2007 2007-2008
Heating Season (November - April)
[Th
erm
s]Actual Usage
Weather Adjusted
June 4, 2009 The Jordan Institute - ABC Green Building Class Petersen Engineering, Inc.
Figure 10, Heating season natural gas costs. The 2007-2008 heating season experienced an increase in natural gas costs of $17,750 over the previous year. This is despite the fact that the average cost per therm for gas dropped from $1.54/therm in
2006-2007 to $1.37/therm in 2007-2008. the total cost of the increased gas usage thus is over $24,000.
Community Campus Heating Season Natural Gas Costs
$43
,95
3
$5
7,9
83
$7
5,7
42
$65
,56
1
$6
8,6
11
$0
$20,000
$40,000
$60,000
$80,000
2003-2004 2004-2005 2005-2006 2006-2007 2007-2008
Heating Season (November - April)
June 4, 2009 The Jordan Institute - ABC Green Building Class Petersen Engineering, Inc.
Figure 11, Annual heating degree days for Rochester, NH. Rochester was used as the basis for normalizing the natural gas use for winter weather intensity.
Annual Heating Degree Days for Rochester, NH
6668 66757106 7097 6878
6039
7002
4177
68127033
0
1000
2000
3000
4000
5000
6000
7000
8000
2000 2001 2002 2003 2004 2005 2006 2007 2008YTD
AVG
Hea
tin
g D
egre
e D
ays
(65°
F B
ase)
* Average Values are the average for years 2000-2007.
June 4, 2009 The Jordan Institute - ABC Green Building Class Petersen Engineering, Inc.
Figure 12, Annual cooling degree day’s for Rochester, NH. Normalizing electricity use to weather data is difficult without additional metering to separate HVAC loads from plug and lighting loads. Data provided for reference only.
Annual Cooling Degree Days for Rochester, NH
265
495
603
500
290
601
666
486
5
488
0
100
200
300
400
500
600
700
2000 2001 2002 2003 2004 2005 2006 2007 2008YTD
AVG
Co
olin
g D
egre
e D
ays
(65°
F B
ase)
* Average Values are the average for years 2000-2007.
June 4, 2009 The Jordan Institute - ABC Green Building Class Petersen Engineering, Inc.
June 4, 2009 The Jordan Institute - ABC Green Building Class Petersen Engineering, Inc.
June 4, 2009 The Jordan Institute - ABC Green Building Class Petersen Engineering, Inc.
June 4, 2009 The Jordan Institute - ABC Green Building Class Petersen Engineering, Inc.
June 4, 2009 The Jordan Institute - ABC Green Building Class Petersen Engineering, Inc.
June 4, 2009 The Jordan Institute - ABC Green Building Class Petersen Engineering, Inc.
June 4, 2009 The Jordan Institute - ABC Green Building Class Petersen Engineering, Inc.
June 4, 2009 The Jordan Institute - ABC Green Building Class Petersen Engineering, Inc.
June 4, 2009 The Jordan Institute - ABC Green Building Class Petersen Engineering, Inc.
June 4, 2009 The Jordan Institute - ABC Green Building Class Petersen Engineering, Inc.
June 4, 2009 The Jordan Institute - ABC Green Building Class Petersen Engineering, Inc.
June 4, 2009 The Jordan Institute - ABC Green Building Class Petersen Engineering, Inc.
June 4, 2009 The Jordan Institute - ABC Green Building Class Petersen Engineering, Inc.
June 4, 2009 The Jordan Institute - ABC Green Building Class Petersen Engineering, Inc.
June 4, 2009 The Jordan Institute - ABC Green Building Class Petersen Engineering, Inc.
June 4, 2009 The Jordan Institute - ABC Green Building Class Petersen Engineering, Inc.
June 4, 2009 The Jordan Institute - ABC Green Building Class Petersen Engineering, Inc.
June 4, 2009 The Jordan Institute - ABC Green Building Class Petersen Engineering, Inc.
June 4, 2009 The Jordan Institute - ABC Green Building Class Petersen Engineering, Inc.
June 4, 2009 The Jordan Institute - ABC Green Building Class Petersen Engineering, Inc.
June 4, 2009 The Jordan Institute - ABC Green Building Class Petersen Engineering, Inc.
June 4, 2009 The Jordan Institute - ABC Green Building Class Petersen Engineering, Inc.
June 4, 2009 The Jordan Institute - ABC Green Building Class Petersen Engineering, Inc.
June 4, 2009 The Jordan Institute - ABC Green Building Class Petersen Engineering, Inc.