ASHRAE Journal - June 2019 - 64

2019

ASHRAE TECHNOLOGY AWARD CASE STUDIES

160
BMS Lighting

Modeled Lighting

BMS Receptacles

Modeled Receptacles

BMS HVAC

Modeled HVAC

140

kWh (In Thousands)

120
100
80
60
40
20
0
Mar 17

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Jan 18

Feb

FIGURE 2 An extensive 12-month measurement and verification process showed that the building performance is very close to energy model predictions.

overhead radiant panels at perimeter spaces, which is
a conservative assumption.

Innovation

ASHRAE JOURNAL

ashrae.org

J U N E 2 0 19

kWh (in Thousands)

200
150
100

Billed Electrical Consumption
Measured Electricity
Modeled Typical Weather
Modeled Actual Weather

50
0
Mar 17 Apr May Jun Jul

Aug Sep Oct

Nov Dec Jan 18 Feb

FIGURE 3 Monthly electricity comparison.

Therms (in Thousands)

The design team and owner's desire to innovate
was a strong driving force for this project. Starting
with the conceptual design charrette and continuing
throughout the project, the team strove to achieve a
truly high-performance design. One example is that
the automated shading system, in concert with the
radiant system, allowed for a denser occupancy plan,
as workstations could be moved closer to the perimeter than was originally planned while preventing
glare and thermal asymmetry. The shading system
is custom-programmed to prevent direct solar gain
onto occupants. Therefore, desks could be placed
within 3 ft (914 mm) of the glazing. This means that
Intuit can house more employees in the Marine Way
building and defer building or leasing additional
office space.
The shading system also measures the real-time
sky conditions at each bay of curtainwall, which can
account for changes in the surrounding neighborhood or inconsistent reflections from parked cars. A
photograph of the building is shown in Photo 1. It was
taken at 11:30 a.m. in June, standing at the southwest
corner of the building. The south-facing shades are fully
deployed, preventing direct solar gain on the occupants
sitting near the window. The west-facing shades are
somewhat raised because the sun has not yet wrapped

64

250

4
3.5
3
2.5
1.5
1
0.5
0

Billed Gas
Measured Gas
Modeled Typical Weather
Modeled Actual Weather

Mar 17 Apr May Jun

Jul Aug Sep

Oct Nov Dec Jan 18 Feb

FIGURE 4 Monthly natural gas comparison.

around the building, thus no direct sunlight. This allows
daylighting potential to be maximized while still preventing glare and thermal discomfort. As compared with
manually operated shades, these shades will be open


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ASHRAE Journal - June 2019

Table of Contents for the Digital Edition of ASHRAE Journal - June 2019

Contents
ASHRAE Journal - June 2019 - Intro
ASHRAE Journal - June 2019 - Cover1
ASHRAE Journal - June 2019 - Cover2
ASHRAE Journal - June 2019 - 1
ASHRAE Journal - June 2019 - Contents
ASHRAE Journal - June 2019 - 3
ASHRAE Journal - June 2019 - 4
ASHRAE Journal - June 2019 - 5
ASHRAE Journal - June 2019 - 6
ASHRAE Journal - June 2019 - 7
ASHRAE Journal - June 2019 - 8
ASHRAE Journal - June 2019 - 9
ASHRAE Journal - June 2019 - 10
ASHRAE Journal - June 2019 - 11
ASHRAE Journal - June 2019 - 12
ASHRAE Journal - June 2019 - 13
ASHRAE Journal - June 2019 - 14
ASHRAE Journal - June 2019 - 15
ASHRAE Journal - June 2019 - 16
ASHRAE Journal - June 2019 - 17
ASHRAE Journal - June 2019 - 18
ASHRAE Journal - June 2019 - 19
ASHRAE Journal - June 2019 - 20
ASHRAE Journal - June 2019 - 21
ASHRAE Journal - June 2019 - 22
ASHRAE Journal - June 2019 - 23
ASHRAE Journal - June 2019 - 24
ASHRAE Journal - June 2019 - 25
ASHRAE Journal - June 2019 - 26
ASHRAE Journal - June 2019 - 27
ASHRAE Journal - June 2019 - 28
ASHRAE Journal - June 2019 - 29
ASHRAE Journal - June 2019 - 30
ASHRAE Journal - June 2019 - 31
ASHRAE Journal - June 2019 - 32
ASHRAE Journal - June 2019 - 33
ASHRAE Journal - June 2019 - 34
ASHRAE Journal - June 2019 - 35
ASHRAE Journal - June 2019 - 36
ASHRAE Journal - June 2019 - 37
ASHRAE Journal - June 2019 - 38
ASHRAE Journal - June 2019 - 39
ASHRAE Journal - June 2019 - 40
ASHRAE Journal - June 2019 - 41
ASHRAE Journal - June 2019 - 42
ASHRAE Journal - June 2019 - 43
ASHRAE Journal - June 2019 - 44
ASHRAE Journal - June 2019 - 45
ASHRAE Journal - June 2019 - 46
ASHRAE Journal - June 2019 - 47
ASHRAE Journal - June 2019 - 48
ASHRAE Journal - June 2019 - 49
ASHRAE Journal - June 2019 - 50
ASHRAE Journal - June 2019 - 51
ASHRAE Journal - June 2019 - 52
ASHRAE Journal - June 2019 - 53
ASHRAE Journal - June 2019 - 54
ASHRAE Journal - June 2019 - 55
ASHRAE Journal - June 2019 - 56
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ASHRAE Journal - June 2019 - 58
ASHRAE Journal - June 2019 - 59
ASHRAE Journal - June 2019 - 60
ASHRAE Journal - June 2019 - 61
ASHRAE Journal - June 2019 - 62
ASHRAE Journal - June 2019 - 63
ASHRAE Journal - June 2019 - 64
ASHRAE Journal - June 2019 - 65
ASHRAE Journal - June 2019 - 66
ASHRAE Journal - June 2019 - 67
ASHRAE Journal - June 2019 - 68
ASHRAE Journal - June 2019 - 69
ASHRAE Journal - June 2019 - 70
ASHRAE Journal - June 2019 - 71
ASHRAE Journal - June 2019 - 72
ASHRAE Journal - June 2019 - 73
ASHRAE Journal - June 2019 - 74
ASHRAE Journal - June 2019 - 75
ASHRAE Journal - June 2019 - 76
ASHRAE Journal - June 2019 - 77
ASHRAE Journal - June 2019 - 78
ASHRAE Journal - June 2019 - 79
ASHRAE Journal - June 2019 - 80
ASHRAE Journal - June 2019 - Cover3
ASHRAE Journal - June 2019 - Cover4
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