ASHRAE Journal - November 2014 - 72

2014 ASHRAE TECHNOLOGY AWARD CASE STUDIES

Spray Nozzles
Exhaust to Outside

Exhaust
Air
Main Computer Room

Labs

Outside Air

Supply

Combined Heating/ Heat Recovery
Cooling Coil
Coil

Burnside

Otto Maass

FIGURE 2 Heat recovery loop between Otto Maass and adjacent Burnside building.

4
3
2

Heat Recovery
Area Lights
Misc. Equipment

Space Heat
Space Cool

Heat Reject
Pumps & Misc.

Vent Fans
Saved Energy

FIGURE 3 Simulated energy consumption per use for existing and renovated building.

efficiency of the renovated building, the consumption
of the existing building was simulated using Canmet
ENERGY's EE-4 software that uses DOE-2 in the background and according to Canada's Model National
Energy Code for Buildings (MNECB).
The energy consumption of the renovated building
was initially simulated and then measured over a oneyear period after the renovation. Figure 3 shows energy
consumption per use for the existing building and the
renovated building (as per simulation). The simulated
renovated building is 43% more efficient than the original building.
Total energy savings, as measured by the meters, is
more significant than those initially estimated through
simulations. The measured annual total energy savings
72

ASHRAE JOURNAL

ashrae.org

N OVEM BER 2014

Electrical Energy

Steam Energy

Jul. 2013

Jun. 2013

May 2013

Apr. 2013

Mar. 2013

Feb. 2013

Jan. 2013

Dec. 2012

Nov. 2012

0

Oct. 2012

1
Sept. 2012

Renovated Building (Simulation)

Existing Building (Simulation)

5

Aug. 2012

FIGURE 1 Runaround glycol heat recovery loop with 150,000 cfm (70 800 L/s)
total capacity.

Energy (MBtu) in Thousands

6

Total Energy

FIGURE 4 Twelve months of actual energy data.

represent 59% of the original energy consumption.
The measured data are shown in Figure 4 (12 months
of actual energy data: heat recovery and energy consumption measured through time) and Table 1 (one
year's consumption data for existing and renovated
building).
For the electricity, the difference between the simulation and the actual use could be explained, in part, by
the process laboratory equipment that was not considered in the simulation. For steam, the estimated
diversity with the VAV system is better than anticipated,
resulting in lower average air change per hour.

Indoor Air Quality and Thermal Comfort
The project mainly focused on the retrofit of research
laboratories that were equipped with an average of 19
hoods per 5,000 ft2 (465 m2). This retrofit was designed



ASHRAE Journal - November 2014

Table of Contents for the Digital Edition of ASHRAE Journal - November 2014

Contents
ASHRAE Journal - November 2014 - Cover1
ASHRAE Journal - November 2014 - Cover2
ASHRAE Journal - November 2014 - 1
ASHRAE Journal - November 2014 - 2
ASHRAE Journal - November 2014 - Contents
ASHRAE Journal - November 2014 - 4
ASHRAE Journal - November 2014 - 5
ASHRAE Journal - November 2014 - 6
ASHRAE Journal - November 2014 - 7
ASHRAE Journal - November 2014 - 8
ASHRAE Journal - November 2014 - 9
ASHRAE Journal - November 2014 - 10
ASHRAE Journal - November 2014 - 11
ASHRAE Journal - November 2014 - 12
ASHRAE Journal - November 2014 - 13
ASHRAE Journal - November 2014 - 14
ASHRAE Journal - November 2014 - 15
ASHRAE Journal - November 2014 - 16
ASHRAE Journal - November 2014 - 17
ASHRAE Journal - November 2014 - 18
ASHRAE Journal - November 2014 - 19
ASHRAE Journal - November 2014 - 20
ASHRAE Journal - November 2014 - 21
ASHRAE Journal - November 2014 - 22
ASHRAE Journal - November 2014 - 23
ASHRAE Journal - November 2014 - 24
ASHRAE Journal - November 2014 - 25
ASHRAE Journal - November 2014 - 26
ASHRAE Journal - November 2014 - 27
ASHRAE Journal - November 2014 - 28
ASHRAE Journal - November 2014 - 29
ASHRAE Journal - November 2014 - 30
ASHRAE Journal - November 2014 - 31
ASHRAE Journal - November 2014 - 32
ASHRAE Journal - November 2014 - 33
ASHRAE Journal - November 2014 - 34
ASHRAE Journal - November 2014 - 35
ASHRAE Journal - November 2014 - 36
ASHRAE Journal - November 2014 - 37
ASHRAE Journal - November 2014 - 38
ASHRAE Journal - November 2014 - 39
ASHRAE Journal - November 2014 - 40
ASHRAE Journal - November 2014 - 41
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ASHRAE Journal - November 2014 - 43
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ASHRAE Journal - November 2014 - 45
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ASHRAE Journal - November 2014 - 49
ASHRAE Journal - November 2014 - 50
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ASHRAE Journal - November 2014 - 54
ASHRAE Journal - November 2014 - 55
ASHRAE Journal - November 2014 - 56
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ASHRAE Journal - November 2014 - Cover3
ASHRAE Journal - November 2014 - Cover4
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