F-Gas 2 Flashcards
SI Unit of Standard measurement mass is?
Kilograms
SI Unit for measuring density is?
Kg/m3
Force in Newtons can be calculated by?
Mass x Acceleration
The function of the evaporator is to?
Convert refrigerant at low pressure saturated mixture to superheated vapour
If a refrigerant is superheated then it is a?
Vapour above its saturation temperature
A Refrigerant that is a zeotropic blend will?
separate in the evaporate
A Frozen food cabinet is to be kept at -20C, the evaporating temperature would be?
-30C
A Liquid line sightglass is continuously showing bubbles, this would mean
Shortage of refrigerant
The gas that is most damaging to the ozone layer is?
Chlorine
Which of these gases are not covered by the Kyoto protocol?
Hydrocarbons (HCs)
Under f-gas regulations a system containing 5 or more tonnes CO2-eq of HFC Refrigerant must be?
Leak test every 12 months and a record kept.
The amount of liquid refrigerant a liquid receiver should be able to hold is?
More than the total charge of the system
The types of valves that potentially leak the most would be?
Line tap valves
The type of compressor that has potentially the highest risk of leakage is?
An Open type
The component in the system that rejects heat from the refrigerant into the ambient air is?
The condenser
If the internal tubing of a condenser got blocked the outcome would be?
High pressure build up in the discharge line
The ozone depleting substances (ODS) Regulations will make it illegal to?
use HCFC’s after 2015
When should a system with 5 tonnes of co2 eq and an LDS and without an LDS be leak checked?
12 months with and 24 months without
When should a system with 50 tonnes of co2 eq and an LDS and without an LDS be leak checked?
6 months without and 12 months with
When should a system with 500 tonnes of co2 eq and an LDS and without an LDS be leak checked?
Has to have an LDS and 6 months with one.
Suction line filter drier should be located just upstream of the?
Compressor inlet
TXV Valve maintains the pressure difference between what?
The condenser and the evaporator
The condenser changes refrigerant from a what to a what?
a high pressure vapour to a high pressure liquid
What refrigeration has the highest ODP?
CFC (Chlorofluorocarbon)
