ASHRAE Journal - November 2013 - 44
2013 ASHRAE TEcHnology AwARd cASE STudiES
Building
Hea
t Pu
Building
mp
Hea
t Pu
mp
Heat Exchanger
Future
Phase 2
Supply Temperature
50°F to 64°F
Standby
Boiler
Variable Speed
Drive Pumps
Building
Return Temperature
41°F to 55°F
Treated
Effluent
Waste
Water
Treatment
Plant
Building
Hea
t Pu
mp
Hea
Heat Exchanger
Outfall
t Pu
mp
FigUrE 1 Whistler Athletes Village district energy sharing system. Two pipe closed loop can provide both heating and cooling.
pumps and the reclamation of energy from the connected buildings (Table 1).
To date, the DESS has shown a 47% reduction in energy
compared to traditional natural gas heating systems and
a 39% reduction compared to electric systems. The rest
of the article discusses the results from the data received
from the installed monitoring equipment, the comparison with the initial calculations and the total energy
savings.
The site estimate for the completed project was calculated as 16 million Btu/h (4.7 million W). This total site
load was estimated by using general energy intensity
values per floor area and inserting these figures into the
firm's in-house energy software. The daily heating load
was initially modeled for the site using 2004 temperature data and assumed balance temperatures.
To estimate the total load for the measured year
(August 2010 to August 2011), the initial weather data
was replaced with 2010 to 2011 weather data, and the
balance temperature was adjusted such that the modeled DESS loads matched the measured DESS loads.
Indoor Air Quality and Thermal Comfort
Indoor air quality and maximum outdoor rate for
the housing units and the hostel was determined using
ASHRAE Standard 62.1-2004. Controls were set in each
44
ASHRAE JouRnAl
ashrae.org
O ct O b e r 2 0 1 3
Table 1 Annual loads from August 2010 to August 2011.
ElEctricity UsEd by All
AttAchEd hEAt PUmPs
836 MWh
3,852,432 kBtu
ElEctricity UsEd by
All circUlAting PUmPs
220 MWh
750,640 kBtu
bAckUP ElEctric hEAt
605 MWh
2,064,260 kBtu
bAckUP nAtUrAl gAs hEAt
213 MWh
26,656 kBtu
nAtUrAl gAs UsEd
by cEntrAl boilErs
759 MWh
2,589,708 kBtu
ToTal
2,633 MWh
8,983,796 kBtu
dEsign hEAting loAd (cAlcUlAtEd)
2.65 MWh
9.042 kBtu/h
totAl AnnUAl
sitE loAd (cAlcUlAtEd)
3,949 MWh
13,473,988 kBtu
totAl dEss EnErgy consUmEd
2,633 MWh
8,983,796 kBtu
Total DESS Efficiency
150%
building to provide comfort conditions according to
ASHRAE Standard 55-2007.
Each of the attached residential units has its own heat
pump or heat pumps, taking energy from the DESS and
distributing it to the individual spaces. In the summer,
when the heat pumps are in their cooling mode, the
excess heat in the DESS system is returned to the sewage
plant effluent through the heat exchangers.
The domestic water is heated by the energy drawn
from the DESS. Domestic water maintained at 130°F
(54°C) is heated by the energy drawn from the DESS.
ASHRAE Journal - November 2013
Table of Contents for the Digital Edition of ASHRAE Journal - November 2013
Contents
Commentary
Industry News
Letters
Meetings and Shows
Feature Articles
Sequencing & Control of Compressors
Fire Station Renovation
Sewage Plant Heats Village
Standing Columns
Engineer’s Notebook
Building Sciences
Special Supplement
BACnet Today & the Smart Grid
The Performance Gap
Refrigeration Applications
InfoCenter
Energy Modeling
Emerging Technologies
Data Centers
People
Products
Special Products
Geothermal for Big Box Retail
Classified Advertising
Advertisers Index
ASHRAE Journal - November 2013 - Intro
ASHRAE Journal - November 2013 - Cover1
ASHRAE Journal - November 2013 - Cover2
ASHRAE Journal - November 2013 - 1
ASHRAE Journal - November 2013 - 2
ASHRAE Journal - November 2013 - Contents
ASHRAE Journal - November 2013 - Commentary
ASHRAE Journal - November 2013 - 5
ASHRAE Journal - November 2013 - Industry News
ASHRAE Journal - November 2013 - 7
ASHRAE Journal - November 2013 - 8
ASHRAE Journal - November 2013 - 9
ASHRAE Journal - November 2013 - Letters
ASHRAE Journal - November 2013 - 11
ASHRAE Journal - November 2013 - Meetings and Shows
ASHRAE Journal - November 2013 - 13
ASHRAE Journal - November 2013 - Sequencing & Control of Compressors
ASHRAE Journal - November 2013 - 15
ASHRAE Journal - November 2013 - 16
ASHRAE Journal - November 2013 - 17
ASHRAE Journal - November 2013 - 18
ASHRAE Journal - November 2013 - 19
ASHRAE Journal - November 2013 - 20
ASHRAE Journal - November 2013 - 21
ASHRAE Journal - November 2013 - 22
ASHRAE Journal - November 2013 - 23
ASHRAE Journal - November 2013 - 24
ASHRAE Journal - November 2013 - 25
ASHRAE Journal - November 2013 - 26
ASHRAE Journal - November 2013 - 27
ASHRAE Journal - November 2013 - 28
ASHRAE Journal - November 2013 - 29
ASHRAE Journal - November 2013 - Fire Station Renovation
ASHRAE Journal - November 2013 - 31
ASHRAE Journal - November 2013 - 32
ASHRAE Journal - November 2013 - 33
ASHRAE Journal - November 2013 - 34
ASHRAE Journal - November 2013 - 35
ASHRAE Journal - November 2013 - 36
ASHRAE Journal - November 2013 - 37
ASHRAE Journal - November 2013 - 38
ASHRAE Journal - November 2013 - 39
ASHRAE Journal - November 2013 - Sewage Plant Heats Village
ASHRAE Journal - November 2013 - 41
ASHRAE Journal - November 2013 - 42
ASHRAE Journal - November 2013 - 43
ASHRAE Journal - November 2013 - 44
ASHRAE Journal - November 2013 - 45
ASHRAE Journal - November 2013 - 46
ASHRAE Journal - November 2013 - 47
ASHRAE Journal - November 2013 - Engineer’s Notebook
ASHRAE Journal - November 2013 - 49
ASHRAE Journal - November 2013 - 50
ASHRAE Journal - November 2013 - 51
ASHRAE Journal - November 2013 - 52
ASHRAE Journal - November 2013 - 53
ASHRAE Journal - November 2013 - 54
ASHRAE Journal - November 2013 - 55
ASHRAE Journal - November 2013 - Building Sciences
ASHRAE Journal - November 2013 - 57
ASHRAE Journal - November 2013 - 58
ASHRAE Journal - November 2013 - 59
ASHRAE Journal - November 2013 - 60
ASHRAE Journal - November 2013 - 61
ASHRAE Journal - November 2013 - 62
ASHRAE Journal - November 2013 - 63
ASHRAE Journal - November 2013 - 64
ASHRAE Journal - November 2013 - BACnet Today & the Smart Grid
ASHRAE Journal - November 2013 - BCover2
ASHRAE Journal - November 2013 - B1
ASHRAE Journal - November 2013 - B2
ASHRAE Journal - November 2013 - B3
ASHRAE Journal - November 2013 - B4
ASHRAE Journal - November 2013 - B5
ASHRAE Journal - November 2013 - B6
ASHRAE Journal - November 2013 - B7
ASHRAE Journal - November 2013 - B8
ASHRAE Journal - November 2013 - B9
ASHRAE Journal - November 2013 - B10
ASHRAE Journal - November 2013 - B11
ASHRAE Journal - November 2013 - B12
ASHRAE Journal - November 2013 - B13
ASHRAE Journal - November 2013 - B14
ASHRAE Journal - November 2013 - B15
ASHRAE Journal - November 2013 - B16
ASHRAE Journal - November 2013 - B17
ASHRAE Journal - November 2013 - B18
ASHRAE Journal - November 2013 - B19
ASHRAE Journal - November 2013 - B20
ASHRAE Journal - November 2013 - B21
ASHRAE Journal - November 2013 - B22
ASHRAE Journal - November 2013 - B23
ASHRAE Journal - November 2013 - B24
ASHRAE Journal - November 2013 - B25
ASHRAE Journal - November 2013 - B26
ASHRAE Journal - November 2013 - B27
ASHRAE Journal - November 2013 - B28
ASHRAE Journal - November 2013 - B29
ASHRAE Journal - November 2013 - B30
ASHRAE Journal - November 2013 - The Performance Gap
ASHRAE Journal - November 2013 - 66
ASHRAE Journal - November 2013 - 67
ASHRAE Journal - November 2013 - 68
ASHRAE Journal - November 2013 - 69
ASHRAE Journal - November 2013 - 70
ASHRAE Journal - November 2013 - 71
ASHRAE Journal - November 2013 - 72
ASHRAE Journal - November 2013 - Refrigeration Applications
ASHRAE Journal - November 2013 - InfoCenter
ASHRAE Journal - November 2013 - 75
ASHRAE Journal - November 2013 - 76
ASHRAE Journal - November 2013 - 77
ASHRAE Journal - November 2013 - 78
ASHRAE Journal - November 2013 - Energy Modeling
ASHRAE Journal - November 2013 - Emerging Technologies
ASHRAE Journal - November 2013 - 81
ASHRAE Journal - November 2013 - 82
ASHRAE Journal - November 2013 - 83
ASHRAE Journal - November 2013 - Data Centers
ASHRAE Journal - November 2013 - 85
ASHRAE Journal - November 2013 - 86
ASHRAE Journal - November 2013 - People
ASHRAE Journal - November 2013 - Products
ASHRAE Journal - November 2013 - Special Products
ASHRAE Journal - November 2013 - Geothermal for Big Box Retail
ASHRAE Journal - November 2013 - 91
ASHRAE Journal - November 2013 - 92
ASHRAE Journal - November 2013 - 93
ASHRAE Journal - November 2013 - 94
ASHRAE Journal - November 2013 - Classified Advertising
ASHRAE Journal - November 2013 - Advertisers Index
ASHRAE Journal - November 2013 - Cover3
ASHRAE Journal - November 2013 - Cover4
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