Chapter 15 BAS Interfaces with Other Systems

Question 1

Name 2 operational
benefits of EAC/BAS
integration.

Answer 1

1 .Sharing of database records
2.Having only one integrated
cabling system to administer
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Question 2

Name 5 benefits of a
correctly designed HVAC
control system.

Answer 2

I .ComfortabIe environment for the
occupants
2.0ptimized energy cost and
consumption
3. Improved employee productivity
4.Control of smoke in the event of
a fire
5.Support for the operations of
computer and other
telecommunications equipment
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Question 3

What does “digital” in
digital device control (DDC)
reference?

Answer 3

The digital processing of data
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Question 4

Name 5 common
strategies used by EMSs to
control and monitor power.

Answer 4

1 .Scheduling
2.Peak demand load shedding
3.Event-initiated control
4.Energy consumption and demand
monitoring
5.Optimal starting and stopping of
equipment
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Question 5

Name 2 items most utility
companies use as the
basis of the monthly
electricity charges for
commercial facilities.

Answer 5

1. Consumption
   2.Demand
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Question 6

What is the basis of a
consumption charge?

Answer 6

The total amount of electricity
used during the monthly period
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Question 7

How do most companies
calculate the demand
of electrical energy?

Answer 7

By measuring the electricity
being used during any 15-minute
interval during the monthly
billing period
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Question 8

Which EMS program
minimizes HVAC operating
time by calculating how to
achieve occupancy
temperature at the
start of the day?

Answer 8

Optimum start
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Question 9

What is the purpose of an
optimum stop program
for an EMS?

Answer 9

To minimize the HVAC operating
time by calculating how long
stored energy can maintain
occupancy temperature
at the end of the day
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Question 10

How do night cycle
programs maintain
temperature limits during
periods when the facility
is unoccupied?

Answer 10

By closing outside dampers and
cycling air handling units
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Question 11

What does a night purge
program use to pre-cool the
building before the
mechanical system is
turned on?

Answer 11

Cool, night outside air
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Question 12

Which program ensures
that only the minimum
amount of cooling or
heating energy is used to
satisfy load requirements?

Answer 12

Load reset
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Question 13

Describe how a zero energy
band program works
in an EMS.

Answer 13

It creates a dead band
where neither heating
nor cooling is used.
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Question 14

Lighting may account for
up to _ percent of the
electrical operational costs
in a commercial building.

Answer 14

Lighting may account for
up to 40 percent of the
electrical operational costs
in a commercial building.
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Question 15

Name 2 advantages
associated with using low-
voltage timers for a lighting
control system.

Answer 15

1 .Safer than high-voltage timers
2.More cost-effective than high
voltage timers
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Question 16

Name 6 strategies that can
be used to reduce the
energy demand and
consumption of lighting.

Answer 16

I .Fixed power reduction
2.0ccupancy-based, time of day, and
on/off control
3.Vacancy sensors
4.Daylight harvesting
5.DayIight limiting
6.Fluorescent lamp lumen
depreciation compensation
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Question 17

What is one of the simplest
forms of lighting control?

Answer 17

Fixed power reduction
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Question 18

What is an important safety
consideration when using
occupancy-based lighting
control?

Answer 18

Individual occupants should be
able to easily schedule or
control lighting in areas with
safe entry and exit when
working after hours.
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Question 19

Why do vacancy sensors
save more energy than
occupancy sensors?

Answer 19

Because the occupants
determine when the lighting is
needed, reducing the power
consumption when rooms are
occupied and automatic turn on
is not necessary
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Question 20

Where is daylight
harvesting typically used?

Answer 20

In new buildings
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Question 21

What is an advantage of
using demand lighting?

Answer 21

Demand lighting provides a
kilowatt reduction directly
proportional to the amount the
lights are dimmed and is
accomplished in a manner
unnoticeable to the occupants.
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Question 22

How long does it typically
take for the light output of
a fluorescent lamp to
deteriorate?

Answer 22

3 years
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