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Electrotechnology Cert II > Air Conditioning Systems > Flashcards

Air Conditioning Systems Flashcards

1
Q

What are the 4 classifications (based on size and applications) of air conditioning systems ?

A

Domestic
Commercial
Industrial
Transport

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2
Q

Fill in the blanks

A
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3
Q

Fill in the blanks

A
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4
Q

What are the 5 main types of air conditioning in Australia ?

A

Self-contained units (RAC’s)
Split systems
Ducted systems
Package units
Central plant systems

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5
Q

What are Self-Contained Units (RACs)

A
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6
Q

What system is this ?

A

Split system

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7
Q

What system is this ?

A

Ducted system

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8
Q

What system is this ?

A

Package Unit

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9
Q

What system is this ?

A

Central plant systems

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10
Q

What are the 4 main steps of risk management process ?

A
  1. Identifying hazards
  2. Assessing risks
  3. Controlling risks
  4. Monitoring and review
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11
Q

Fill in the temperature readings.

A
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12
Q

What instrument is this ?

A

Stem Thermometers

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13
Q

What instrument is this ?

A

Infrared thermometer

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14
Q

What instrument is this ?

A

Dial thermometer

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15
Q

What is Relative humidity ?

A

Relative humidity is a measure of how much water vapour is in the air, expressed as a percentage

100% = completely saturated. (Can’t hold any more water)

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16
Q

What instrument is this ?

A

Wet/Dry Bulb Hygrometer

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17
Q

What do these readings indicate ?

A
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18
Q

What instrument is this ?

A

Sling Psychrometer

19
Q

What instrument is this ?

A

Digital Hygrometer

20
Q

What is Air Flow Rate ?

A

The amount of air passing through a particular area (e.g. a duct) each second. (m3/s),

21
Q

What instrument is this ?

A

Vane Anemometer

22
Q

What instrument is this ?

A

Hot Wire Anemometer

Used for measuring very low flow rates

23
Q

What instrument is this ?

A

Hood Anemometer

24
Q

What are the composition of air ?

A
25
Q

What is dry bulb temperature ? (DBT)

A
26
Q

What is Dew Point (DP) ?

A
27
Q

What is Relative Humidity (RH%) ?

A
28
Q

What is specific Humidity (SH) ?

A
29
Q

What is Enthalpy (H) ? in relation to air conditioning.

A
30
Q

What is specific volume (SV) ?

A

The specific volume is a measure of how dense the air is, measured in cubic metres per kilogram (m3/kg), i.e. how much space is occupied by each kilogram of air (remember that air expands as it heats up).

31
Q

What is specific heat ? (in context of air conditioning)

A
32
Q

What is latent Heat ? (in context of air conditioning)

A
33
Q

What is sensible Heat ? (in context of air conditioning)

A
34
Q

What is Total Heat (Enthalpy) ? (in context of air conditioning)

A
35
Q

List 4 forms of latent heating/cooling.

A

· Fusion – changing from a liquid to a solid.

· Melting – changing from a solid to a liquid.

· Vapourisation (evaporation or boiling) – changing from a liquid to a gas.

· Condensation – changing from a gas to a liquid.

36
Q

What is the difference between boiling and evaporation ?

A

Boiling – occurs throughout a complete volume of liquid

Evaporation – only occurs at the surface of the liquid.

37
Q

What is Sensible Heat Ratio (SHR) ?

A
38
Q

What are the air conditioning cycle ?

A
39
Q

Explain the various points in this chart.

A
40
Q

List 3 cooling methods of the human body.

A
41
Q

List the ranges of conditions for human comfort.

A
42
Q

What are the Noise level requirements when installing air conditioning.

A

Must not exceed 5 dBA above background levels.

Must not be audible within a neighbour’s house at night (e.g. 10 pm – 7 am).

Note: manufacturer’s specifications should indicate the sound power level of their units

43
Q

List 4 Factors that affect sizing and selecting air conditioning units.

A

Electrotechnology Cert II (9 decks)

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