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chapter 4 eeu 4.6-4.10 > chap 13 > Flashcards

chap 13 Flashcards

1
Q

a variety of switches and controls are used to manage
operation of lighting installations.

A

Lighting System Controls

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2
Q

A ________ is an electrical device that opens an electrical circuit, thereby shutting the lights off
or closing the circuit to energize the lighting installation.

A

switch

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3
Q

A ______ or group of _______ can control the lighting installation from one or multiple
locations.

A

switch/swithches

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4
Q

Three-way switches ($3) and four-way
switches (S4)

A

can be circuited to control a
lighting installation from two or more locations.

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5
Q

Two three-way switches

A

are required to
control a lighting installation from two
locations.

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6
Q

are required
to control a lighting installation from three or more locations.

A

Two three-way switches and one or more four-way

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7
Q

deactivate the lighting circuit after
a preset time has lapsed.

A

Automatic switches

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8
Q

can be used to vary the luminous flux
(lumen output) from lamps in a lighting installation.

A

Dimmer switches

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9
Q
  • limit access to switches for lights and
    equipment to authorized personnel.
A

Keyed switches

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10
Q

can activate a lighting circuit when a door
is open or closed (e.g., similar to a refrigerator light).

A

Door switches

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11
Q

can be used to control the time period that a lighting installation
operates.

A

Time clocks

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12
Q

Automatically control operation of a lighting installation with electronic
components that are wired into the circuitry.

A

Electronic timers

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13
Q

sense light and can be used to control night lighting in
lieu of a time clock or timer.

A

Photocell controls

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14
Q

control a lighting installation by sensing occupants in a
space and usually mounted on the wall or ceiling. Works well in interior spaces
such as classrooms and offices.

A

Occupancy sensors

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15
Q

A ___________________ offers building operators full control of multiple
lighting installations from a single location.

A

central lighting control system

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16
Q

The efficient and effective use of direct, diffuse, or reflected sunlight to provide full or
supplemental illumination for building interiors during hours of sunlight.

A

Daylighting

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17
Q

Diminishes the need for artificial light in buildings and thus saves lighting costs up to
80% (in some buildings).

A

Sunlight

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18
Q

Daylighting in buildings also typically increases space heating and cooling costs. (t or f)

A

f (decreases_

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19
Q

A combination of direct, reflected, and diffuse sunlight.

A

DAYLIGHT

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20
Q

Strikes a surface and reflects off the surface in another
direction

A

Reflected light

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21
Q

Travels in a straight line path from the sun

A

Direct Light

22
Q

Is light that has been reflected or refracted by clouds,
glazing, or other objects

A

Diffuse light

23
Q

a measure of how easily heat travels through an assembly of materials

A

Overall Coefficient Of Heat Transfer (U)

24
Q

Thermal insulating ability is also measured by the _________ resistance (R):

A

thermal

25
Q

higher R factor indicates a better insulating performance. (t or f)

A

t

26
Q

The fraction of solar heat that is transmitted through the glazing and ultimately
becomes heat.

A

Solar Heat Gain Coefficient (SHGC)

27
Q

The higher the SHGC, the less solar heat is transmitted through the glazing and
the greater it’s shading ability. (t or f)

A

f( lower the shgc)

28
Q

East- and west-facing windows that receive undesirable direct sunlight in
mornings and afternoons should have lower SHGC assemblies.(t iorf)

A

t

29
Q

Is the percentage of visible light (light in the 380 to 720 nm range) that is
transmitted through the glazing.

A

Visible Transmittance (VT)

30
Q

Is the ratio between SHGC and VT of a single glazing

A

Light-to-solar Gain Ratio (LSG)

31
Q

Historically, only _____ was used as a glazing material.

A

glass

32
Q

must be designed to provide
illumination in areas where it is most needed and to do so
without adversely affecting occupant comfort.

A

Daylighting systems

33
Q

is to increase the number
and size of glazed areas in the walls or ceilings of a
building, but simply using large glazed openings does not
ensure good daylighting.

A

Basic daylighting strategy

34
Q

The main functions of_______ are
to bring in daylight and fresh air

A

windows

35
Q

Is a design term that describes window size, arrangement, and
glazing type (the glass and coatings used in the window).

A

Fenestration

36
Q

Is a fenestration arrangement in an upper story wall that
extends above one roof surface; it introduces daylight into the
ceiling area of the space.

A

Clerestory Window System

37
Q

An_______ is an interior courtyard covered with glazing. Rooms
and spaces 8 adjoining the atrium receive daylight entering
through the glazed roof.

A

atrium

38
Q

A ________ arrangement of several smaller windows can
provide uniform daylight illumination if properly distributed in
the space being illuminated.

A

fenestration

39
Q

In hot climates in the northern hemisphere, the low position of the sun
produces a shallow angle and a heat gain that contributes to space
heating. (t or f)

A

f(cold climates)

40
Q

Limit solar gains in the summer because the steep angle of the
summer sun with respect to the glass.

A

South-facing windows

41
Q

Exposed to considerable direct sunlight during these times of
the day

A

East-and West – facing windows

42
Q

Windows facing in these directions should only be used when
no other method of introducing daylight is possible and where
control of direct sunlight and glare is achievable

A

East-and West – facing windows

43
Q

windows facing in this direction
provide good quality daylighting, excessive heat loss and mean
radiant temperature in the winter is a concern in cold climates.

A

North-facing windows

44
Q

Is a transparent panel located in a roof opening that allows
direct and diffuse sunlight into the building

A

Skylights

45
Q

Is a type of skylight system that is a raised, typically triangular
shaped, extension of a roof and that has at least one glazed
surface.

A

Roof Monitor

46
Q

Is a passive (non-mechanical) architectural
element or mechanism that allows sunlight to
enter deep into a building.

A

Reflective Light Shelves

47
Q

Is a type of light pipe that has a movable
mirror or light-refracting system and that
can be used to align the incoming sunlight
with the axis of the light pipe, thereby
minimizing reflection losses

A

Sun tracking light pipe

48
Q

can be used to introduced daylight
through the roof itself

A

Fabric Roof Membrane

49
Q

use a membrane, supported by a cable, to act as
the roof of a structure.

A

Tension structures

50
Q

Air-supported structures

A

use a membrane, supported by — air
pressure, to act as the roof and walls of the structure.

chapter 4 eeu 4.6-4.10 (5 decks)

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