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Environment Control System

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For final
Micah Blevins
Quiz by Micah Blevins, updated more than 1 year ago
Micah Blevins
Created by Micah Blevins over 7 years ago
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Resource summary

Question 1

Question
embodied energy is
Answer
  • the heat output from building occupants
  • the energy required to produce and deliver a building material
  • the energy lost through the use of inefficient building systems
  • the collective energy that has been used by the human race up to this time

Question 2

Question
sustainability may be defined as
Answer
  • a state in which the needs of the future are met without compromising the ability of the present generation to meet its own needs
  • a state in which the needs of the present are met without compromising the ability of future generations to meet their own needs
  • a state in which the needs of the present are met without concern for compromising the ability of future generations to meet their own needs

Question 3

Question
the following is the only renewable construction material currently in wide use in north america
Answer
  • plastics
  • wood
  • steel
  • straw

Question 4

Question
according to the design pyramid for a sustainable building design process, which of the following should be considered first in the process - before other factors are considered, and utilized the most?
Answer
  • site resources, like vegetation and solar exposure
  • passive strategies, like daylighting and natural ventilation
  • active strategies, like photovoltaics and hvac systems

Question 5

Question
the 2030 challenge goal is that by the year 2030
Answer
  • all new buildings will have reduced their energy consumption by 50% from today's baseline standard
  • all new buildings will be carbon-neutral, using no fossil fuel (greenhouse gas) emitting energy to operate
  • new buildings will have replaced all existing buildings currently in use, and thereby making the environment more sustainable

Question 6

Question
in the coming century, ------ will most likely present the most critical resource shortage
Answer
  • water
  • oil
  • natural gas
  • lumber

Question 7

Question
the greenhouse effect is of concern because
Answer
  • it may block incoming solar radiation and lead to a cooling of the earth
  • it may block incoming solar radiation and make solar collectors ineffective
  • it may trap solar radiation and lead to global warning

Question 8

Question
sustainable design looks at the site
Answer
  • as a home to ecosystems and community resources
  • as a source of renewable energy
  • as a possible heat source and sink
  • all of the above

Question 9

Question
how could one best compare the sun's apparent position on june 21 and december 21 in the northern hemisphere?
Answer
  • the sun appears higher on december 21 than it is on june 21
  • the sun appears higher on june 21 than it is on december 21
  • the sun's position is identical at these times
  • the sun's position varies too greatly to tell

Question 10

Question
the interactions between a building and its site are
Answer
  • uni-directional, the building affects the site, but not vice versa
  • uni-directional, the site affects the building, but not vice versa
  • bi-directional, the site affects the building and the building affects the site
  • non-existent, there are no such interactions

Question 11

Question
------ is an ecology oriented building certification program which concentrates its efforts on improving building performance in environmental and human health, energy efficiency, indoor environmental quality, materials selection, site development and water savings.
Answer
  • ashrae
  • ahvac
  • 2030 challenge
  • leed

Question 12

Question
in temperate climates of north america, where the design goal is to take full advantage of solar energy for daylighting and passive heating of a building interior, most exterior glazing for the building should be oriented:
Answer
  • north
  • south
  • east
  • west

Question 13

Question
unlike active strategies, passive strategies
Answer
  • use nonrenewable energy for heating, cooling, ventilating and illumination
  • use renewable energy for heating, cooling, ventilating and illumination
  • are not as sustainable as active strategies

Question 14

Question
deciduous vegetation can play a large role in building design as a result of its ability to:
Answer
  • increase interior lighting levels
  • prevent winter sun from entering and overheating buildings
  • slow winter wind
  • reduce heat gain during summer months

Question 15

Question
ventilation is defined as:
Answer
  • air introduced to a building to refresh oxygen and provide passive cooling
  • air movement caused by a mechanical device of some sort
  • exterior air motion (also called wind)
  • air that passes from a building's interior to the exterior

Question 16

Question
------ is the amount of moisture in the air as compared with the maximum amount that the air could contain at the same temperature, expressed as a percentage
Answer
  • mean radiant temperature
  • wet-bulb temperature
  • relative humidity

Question 17

Question
conduction is
Answer
  • heat flow due to the movement of air (gases and liquids)
  • heat flow due to the contact of two bodies of differing temperatures
  • heat flow through the air in the form of electromagnetic energy, such as sunlight

Question 18

Question
convection is
Answer
  • heat flow due to the movement of air (gases and liquids)
  • heat flow due to the contact of two bodies of differing temperatures
  • heat flow through the air in the form of electromagnetic energy, such as sunlight

Question 19

Question
your comfort zone is
Answer
  • based on the combinations of metabolism, perspiration and respiration that most often produce comfort
  • based on the combinations of active (nonrenewable) energies that most often produce comfort
  • based on the combinations of air temperature, relative humidity, air movement and surface temperatures that most often produce comfort

Question 20

Question
which of the following pairs of parameters are used as the primary axes plotted on the psychrometric (bioclimatic) chart?
Answer
  • dry bulb temperature and relative humidity
  • dry bulb temperature and enthalpy
  • density and specific volume
  • mean temperature and dew point temperature

Question 21

Question
radiation is
Answer
  • heat flow due to the movement of air (gases and liquids)
  • heat flow due to the contact of two bodies of differing temperatures
  • heat flow through the air in the form of electromagnetic energy, such as sunlight

Question 22

Question
------ is the organization which has established acceptable design guidelines for human comfort (the comfort zone) in US buildings, that are required by municipal codes
Answer
  • ashrae
  • ahvac
  • leed
  • 2030.org

Question 23

Question
hvac stands for
Answer
  • heating, ventilating, air moving and cooling
  • heating, ventilating, air quality control and cooling
  • heating, ventilating and air conditioning

Question 24

Question
in a skin load dominated building, energy consumption is primarily dictated by:
Answer
  • the influence of the exterior climate on a building's envelope
  • the influence of the interior climate on a building's envelope
  • lighting use, heat from people, fixtures, equipment and other internal sources
  • the age of the building

Question 25

Question
which of the following is not a common source of a building's internal heat loads?
Answer
  • electric lights
  • radiation from skylights
  • people
  • equipment

Question 26

Question
a tall building has deep floor plates and is illuminated primarily by electric light sources. this building is most likely to be:
Answer
  • an envelope dominated building
  • a switch dominated building
  • an internal load dominated building
  • an external load dominated buidling

Question 27

Question
the concept of distribution tree is used to describe
Answer
  • the network of sales and delivery locations established to promote hvac systems
  • the flow of design information from architect to consultant to contractor
  • the means by which cooling and heating are delivered from a central system to conditioned spaces

Question 28

Question
the three primary classifications of central hvac systems (for large bldgs.)
Answer
  • all air, air and water and all water
  • local, remote and sensor
  • local, central and heat pump

Question 29

Question
which of the following would not be a criteria for differentiating a separate interior thermal zone for a building:
Answer
  • space orientation
  • space acoustics
  • space function
  • space schedule of use

Question 30

Question
in an hvac system, ------- air moves from the air handling unit (ahu) to occupied spaces, and ------- air moves from the occupied spaces to the air handling unit (ahu)
Answer
  • supply, return
  • supply, tempered
  • return, supply

Question 31

Question
local hvac systems are most likely to be applied in which types of buildings:
Answer
  • office buildings
  • hospitals and clinics
  • hotels, motels and apartments
  • museums and galleries

Question 32

Question
advantages of a local hvac system over a central system would typically include:
Answer
  • more individual control, smaller equipment units, potential for building conditioning should a single unit fail, no need for a mechanical room
  • better comfort equipment, higher efficiency, more architecturally appealing
  • no space required for equipment, quiet equipment, easy use of centralized controls

Question 33

Question
a -------- system is a single duct hvac system where the volume, rather than the temperature, of supply air is controlled in order to meet comfort requirements
Answer
  • terminal reheat
  • constant volume
  • variable air volume

Question 34

Question
------ is an hvac system which utilizes two ducts - one for hot air and one for cold air. the air from these ducts is blended in mixing boxes before distribution, to allow greater variation in temperature of air delivered
Answer
  • dual duct
  • variable air volume
  • displacement

Question 35

Question
an all air hvac system
Answer
  • uses only air to deliver heating/cooling effect to conditioned spaces
  • uses air supply and return within occupied spaces, but water to deliver heating/cooling effect from the central station equipment to the spaces
  • is, by definition, a local system

Question 36

Question
a single story, open plan, square office building has five thermal zones. it would be reasonable to conclude that these five zones correspond to:
Answer
  • offices, corridors, bathrooms, lobby and service spaces
  • the four exposure orientations (n, s, e, w) and the central core
  • the four exposure orientations (n, s, e, w) and the lobby

Question 37

Question
with internal load dominated buildings, it is possible that cooling may be required in some zones even in the winter - due to the internal heat loads
Answer
  • True
  • False

Question 38

Question
daylight factor is best defined as
Answer
  • the ratio of daylight intensity between the brightest and dimmest points in a building
  • the average daylight intensity at a specified point between 10 am and 4 pm
  • the ratio of daylight intensity between an interior condition and an exterior reference point

Question 39

Question
----- is a horizontal surface that reflects daylight off the ceiling and deep into a space - providing effective daylighting
Answer
  • clerestory
  • light shelf
  • daylight aperture

Question 40

Question
which of the following is not a component of daylight, or the daylight factor?
Answer
  • sky component
  • externally reflected component
  • solar radiation
  • internally reflected component

Question 41

Question
in many locations, an ideal orientation for buildings is an elongated, narrow plan allowing the ------- facades of the building maximum exposure to more easily controllable daylight
Answer
  • north and south
  • east and west
  • south and west

Question 42

Question
a trombe wall is an example of which of the following passive solar heating system types
Answer
  • sunspace
  • indirect gain
  • direct gain
  • diffuse gain

Question 43

Question
which of the following materials would not make an effective thermal mass wall - in which the massive material heats slowly from solar exposure, and later releases its heat slowly to a surrounding space?
Answer
  • solid brick masonry
  • solid concrete
  • water
  • rigid foam board

Question 44

Question
------ is a heating and/or cooling system that transfers heat to or from the ground. it uses the earth as a heat source (in the winter) or a heat sink (in the summer)
Answer
  • thermal massing
  • geothermal
  • direct solar

Question 45

Question
balance point temperature is best described as
Answer
  • the temperature at which a backup heating system will take over for a passive system
  • the temperature at which a building needs neither heating nor cooling
  • the temperature that is used to size a conventional heating system

Question 46

Question
which of the following is not a strategy for passive cooling of a building?
Answer
  • high mass cooling
  • stack ventilation
  • evaporative cooling
  • mechanical ventilation system

Question 47

Question
cross ventilation is related to primarily to ------
Answer
  • the size and placement of the inlet and outlet openings
  • the room height
  • the room width

Question 48

Question
------ is defined as the placement of windows and other openings in the exterior wall (building envelope) of buildings
Answer
  • ventilation
  • fenestration
  • infiltration
  • filtering

Question 49

Question
what are heating degree days?
Answer
  • the number of days that heating is required in order to maintain thermal comfort within a building
  • a direct measurement for a building's energy consumption for spatial heating
  • the sum (for an entire year) of the differences between a base temperature and the average daily temperature

Question 50

Question
a tall building has deep floorplates and is illuminated primarily by electric light sources. this building is most likely to be:
Answer
  • an envelope dominated building
  • a switch dominated building
  • an internal load dominated building
  • an external load dominated building
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