This quiz is designed to help students with Refrigerants exam.
They are flammable
They are toxic
They have a high Global Warming Potential
They are both toxic and flammable
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R407C
R744
R600a
R717
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Phase out synthetic greenhouse gases
Reduce the worlds output of CO2 from burning fossil fuels
Phase out ozone depleting substance
Increase the energy performance of mordern HVAC equipment
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The temperature of superheated refrigerant is always high
If heat is removed the temperature will remain stable
A superheated refrgerant could become saturated
A superheated refrgerant is always a vapour
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R717
R744
R410A
R600a
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Secondary refrigerants
Primary refrigerants
Ternary refrigerants
Expendable refrigerants
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Leaving the vacuum pump runnig for at least half an hour
Monitoring the amount of vapour being emitted from the exhaust
Monitoring the compound (blue) gauge on his/her service manifold
Monitoring the vacuum level with an electronic vacustat
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Purging to atmosphere if only small amounts involved
Refrigerant recovery unit and cylinder
Flexible recovery bag
Both b and c
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There are 2 refrigerant circuits and 2 different refrigerants
There are 2 refrigerant circuits and only 1 type of refrigerant
There is 1 refrigerant circuit and 2 different refrigerants
There is 1 refrigerant circuit and only 1 type of refrigerant
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Short hoses with a small diameter, compressor service valves mid-seated
Large diameter hoses, all service valves back seated, system fans running
Short hoses with a large diameter, compressor service valve mid-seated
Long hoses with a large diameter, compressor service valve mid seated
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They have a noticeable glide
They do not fracture
They consist of 1 pure refrigerant only
Their composition changes as they undergo a change in state
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0
38
380
3800
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Increased sea levels
Reduced levels of phytoplankton
Increased rates of skin cancer
Reduced crop yields
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The refrigerant to be recovered
A vacuum to be pulled
Pressure drop to be monitored
Refrigerant to be charged
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A minimum Restricted Air Conditioning Installation and Decommissioning Licence from the Australian Refrigerant Council
A minimum Full Refrigerant and Air Conditioning Licence from the Australian Refrigerant Council
A Full Refrigerant and Air Conditioning Licence from the Australain Refrigeration Council plus a Qualifed Supervisor Certificate from the Department of Fair Trading
A minimum Qualified Supervisor Certificate from the Department of Fair Trading
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R600a
R134a
R290
R11
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Have a high dielectric strength
Have a low miscibility with the system refrigerant
Be extremely hygroscopic
Be compatible with the materials used in the shaft seal
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Part 1
Part 2
Part3
The new Code of Practice does not cover self contained systems
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R12 in an older style domestic refrigerator
R410A in a mordern split system air conditoner
R404A in a commercial ice-cream cabinet
R410A in a retrofitted cool room
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