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Building services and environmental science

Building services and environmental science
50問 • 1年前
  • Alex Skipp
    • 通報

    問題一覧

  • 1

    What type of heat loss mainly occurs through walls?

    Conduction

  • 2

    What type of heat transfer allows a radiator to leave a room?

    Convection

  • 3

    What type of radiant heat is emitted by surfaces of buildings?

    Long wave

  • 4

    What is the thermal transmittance more commonly known as?

    U-value

  • 5

    Opposition to heat flow of materials is known as what?

    Thermal resistance

  • 6

    What type of radiation is glazing particularly good at allowing through?

    Solar radiation

  • 7

    What does PMV mean?

    Predicted mean value

  • 8

    What does PPD mean?

    Predicted percentage of dissatisfaction

  • 9

    When the PMV is zero the PPD is likely to be?

    5% or lower

  • 10

    What are the basic forms of heat loss in a building?

    Conduction and Convection

  • 11

    Waht does thermal equilibrium mean?

    When materials are the same temperature

  • 12

    Heat flows from cooler to hotter environments. True or false

    False

  • 13

    The temperature at which molecular activity stops is called what?

    Absolute zero

  • 14

    What is WBT?

    Wet bulb thermometer

  • 15

    What is DBT?

    Dry bulb temperature

  • 16

    If RH in the room is saturated then:

    both readings will be the same

  • 17

    At 100% saturation wet bulb temperature and dry bulb temperature are:

    the same

  • 18

    Saturated Vapour pressure…

    all of these

  • 19

    What is the first state found on the psychrometric Chart?

    internal air conditions

  • 20

    What does Convection form in?

    Liquid

  • 21

    Which of the following is Mean internal temperature dependent upon?

    all of these

  • 22

    What does the BS5250:1989 specify an acceptable for internal?

    70%

  • 23

    What does DPT Stand for predicting condensation?

    Dew point temperature

  • 24

    What are the driving forces that occur for natural ventilation?

    Wind and Temperature

  • 25

    What is the result when ventilation systems are operating at a high rate?

    excessive energy consumption

  • 26

    Latent heat is defined as:

    The quantity of heat input which changes the state of a body.

  • 27

    Water vapour in the air comes from:

    all of them

  • 28

    The most common pollutants in buildings include:

    CO, formaldehyde, NO2, VOCs

  • 29

    Which of the following is an advantage of Air Conditioning?

    Comfort

  • 30

    For free cooling to be effective:

    The external enthalpy needs to be lower than the internal enthalpy.

  • 31

    Which air conditions system is the cheapest from the maintenance point of view:

    constant air volume

  • 32

    The limits on buildings that can utilize natural ventilation are:

    due to the location

  • 33

    What parameter is not depicted on a psychrometric chart?

    Dew point

  • 34

    In a constant air volume air conditioning system the amount of fresh air entering the air conditioned space is…

    Equal to the air leaving the space

  • 35

    An air-conditioning system provides full control of:

    all or them

  • 36

    What are the main benefits of a Variable Air Volume (VAV)?

    All the Above

  • 37

    What line on a psychometric graph represents the Dry Bulb temperature?

    Vertical

  • 38

    Where would the stack effect be most useful?

    A Shopping Mall

  • 39

    Sensible heat can be defined as:

    Quantity of heat input which changes the temperature of a body

  • 40

    What does TRV stand for?

    Thermostatic radiator valve

  • 41

    What is the destratification pump on DHW cylinder used for?

    All of them

  • 42

    What does ṁ mean?

    Mass Flow Rate

  • 43

    If we add water vapour to air, we increase the_______?

    Enthalpy

  • 44

    Psychrometrics is the study of the properties and behaviour of_________ mixtures?

    Air and water

  • 45

    What Building Regulation applies to ventilation?

    Part F

  • 46

    What is the acronym for “VOC”?

    Volatile Organic Compound

  • 47

    What is the most common pollutant found in buildings?

    All the above

  • 48

    Which of the following is referred to as the ‘total heat content’ of air?

    Enthalpy

  • 49

    What type of boiler is shown in diagram 2?

    Non-Condensing Boiler.

  • 50

    Which of the following is false about Fan coils?

    They are not as noisy.

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    問題一覧

  • 1

    What type of heat loss mainly occurs through walls?

    Conduction

  • 2

    What type of heat transfer allows a radiator to leave a room?

    Convection

  • 3

    What type of radiant heat is emitted by surfaces of buildings?

    Long wave

  • 4

    What is the thermal transmittance more commonly known as?

    U-value

  • 5

    Opposition to heat flow of materials is known as what?

    Thermal resistance

  • 6

    What type of radiation is glazing particularly good at allowing through?

    Solar radiation

  • 7

    What does PMV mean?

    Predicted mean value

  • 8

    What does PPD mean?

    Predicted percentage of dissatisfaction

  • 9

    When the PMV is zero the PPD is likely to be?

    5% or lower

  • 10

    What are the basic forms of heat loss in a building?

    Conduction and Convection

  • 11

    Waht does thermal equilibrium mean?

    When materials are the same temperature

  • 12

    Heat flows from cooler to hotter environments. True or false

    False

  • 13

    The temperature at which molecular activity stops is called what?

    Absolute zero

  • 14

    What is WBT?

    Wet bulb thermometer

  • 15

    What is DBT?

    Dry bulb temperature

  • 16

    If RH in the room is saturated then:

    both readings will be the same

  • 17

    At 100% saturation wet bulb temperature and dry bulb temperature are:

    the same

  • 18

    Saturated Vapour pressure…

    all of these

  • 19

    What is the first state found on the psychrometric Chart?

    internal air conditions

  • 20

    What does Convection form in?

    Liquid

  • 21

    Which of the following is Mean internal temperature dependent upon?

    all of these

  • 22

    What does the BS5250:1989 specify an acceptable for internal?

    70%

  • 23

    What does DPT Stand for predicting condensation?

    Dew point temperature

  • 24

    What are the driving forces that occur for natural ventilation?

    Wind and Temperature

  • 25

    What is the result when ventilation systems are operating at a high rate?

    excessive energy consumption

  • 26

    Latent heat is defined as:

    The quantity of heat input which changes the state of a body.

  • 27

    Water vapour in the air comes from:

    all of them

  • 28

    The most common pollutants in buildings include:

    CO, formaldehyde, NO2, VOCs

  • 29

    Which of the following is an advantage of Air Conditioning?

    Comfort

  • 30

    For free cooling to be effective:

    The external enthalpy needs to be lower than the internal enthalpy.

  • 31

    Which air conditions system is the cheapest from the maintenance point of view:

    constant air volume

  • 32

    The limits on buildings that can utilize natural ventilation are:

    due to the location

  • 33

    What parameter is not depicted on a psychrometric chart?

    Dew point

  • 34

    In a constant air volume air conditioning system the amount of fresh air entering the air conditioned space is…

    Equal to the air leaving the space

  • 35

    An air-conditioning system provides full control of:

    all or them

  • 36

    What are the main benefits of a Variable Air Volume (VAV)?

    All the Above

  • 37

    What line on a psychometric graph represents the Dry Bulb temperature?

    Vertical

  • 38

    Where would the stack effect be most useful?

    A Shopping Mall

  • 39

    Sensible heat can be defined as:

    Quantity of heat input which changes the temperature of a body

  • 40

    What does TRV stand for?

    Thermostatic radiator valve

  • 41

    What is the destratification pump on DHW cylinder used for?

    All of them

  • 42

    What does ṁ mean?

    Mass Flow Rate

  • 43

    If we add water vapour to air, we increase the_______?

    Enthalpy

  • 44

    Psychrometrics is the study of the properties and behaviour of_________ mixtures?

    Air and water

  • 45

    What Building Regulation applies to ventilation?

    Part F

  • 46

    What is the acronym for “VOC”?

    Volatile Organic Compound

  • 47

    What is the most common pollutant found in buildings?

    All the above

  • 48

    Which of the following is referred to as the ‘total heat content’ of air?

    Enthalpy

  • 49

    What type of boiler is shown in diagram 2?

    Non-Condensing Boiler.

  • 50

    Which of the following is false about Fan coils?

    They are not as noisy.