Real Alternatives
... were among the earliest refrigerants used for mechanical cooling systems. (Choose 3)
Flammable refrigerants are categorised
as having either lower of higher flammability,
dependent on the concentration required
for ignition to be possible, the heat of
combustion and flame propagation.
Lower flammability does not mean...
Refrigerant application is often limited by
What is an HFO:
Hand valves are installed to...
CPR is an...
This valve automatically maintains a minimum head pressure during cold ambients. When head pressure drops to the set point, the valve allows hot gas to bypass the condenser and go directly to the receiver.
Evaporator pressure regulator is...
The solenoid valve is closed when...
.....is a method of making a large system keep running when the heat load is reduced
.....is an air conditioning system capable of reversing the refrigerant flow to function as a heating source.
Nitrogen(N) and Carbon Dioxide (CO2) are...
Whe the system is completely assembled, the entire system is pressurized to...
Moisture located in traps and in the compressor oil is the last to be removed. ..... can be used to drive moisture oil out of the system when evacuating.
It is a measurement of refrigerant's ability to destroy ozone.
To prevent fractination inside the cylinder, zeotropic blends are carefully charged into the system as a...
Absolute Pressure (psia) means the zero is placed down where it belongs, where no pressure exists. This is called...
One ton of refrigeration can be expressed three ways. ..... is universally accepted to represent One ton of refrigeration.
The Law deals with a mixture of gases rather than a single, pure gas.
All mechanical refrigeration systems are compared to melting...
Refrigeration evaporators are designed for about...
The oil pressure safety control protects the compressor againsa loss of lubrication and requires...
Temperature sensitive controls have an electrical contact that opens and closes according to the...
When the system is overcharged, the excess refrigerant...
The low pressure hose and gauge is color-coded.... and is located on the ...side of manifold.
The sight glass is located in the liquid line just ...
Створюйте онлайн-тести
для контролю знань і залучення учнів
до активної роботи у класі та вдома
