I live in a clean house
When solar rays are trapped in the earths atmosphere.
What is global warming or the green house effect.
If the correct charge is 1.5 pounds, it holds _________ ounces of refrigerant.
What is 24 ounces.
___________ heat is the kind of heat that can be measured or felt.
What is sensible heat.
Atmospheric pressure at sea level.
What is 14.7 psi.
Compressor cycles off/on quickly, low and high side pressures are low.
What is the system is under charged.
The component that engages the compressor drive.
What is the compressor clutch.
The hole in the ozone was believed to be partially caused by this refrigerant.
What is R12.
The action taken after a purity test is performed and the refrigerant is found to be 96% R134a and 4% R12
Recover and evacuate the system into a designated containment cylinder and disposed of through an EPA approved refrigerant disposal service.
____________ Heat can't be measured with a thermometer.
What is latent heat.
The actual amount of moisture content in the air in relation to the total moisture that the air can hold at a given temperature.
What is relative humidity.
R134a system with an average low pressure of about 30 psi (+/- 2 psi), and a high side pressure of about 200 - 225 psi (+/- 25 psi).
What is a normal operating system.
These open and close allowing refrigerant gas to enter and exit the compressor.
What are reed valves.
Organization assigned by the EPA and responsible for refrigerant handling certification.
What is MACS (Mobile Air Conditioning Society).
Three refrigerants have three colors.
What is:
R-12 : White
R134a: Light Blue
R1234yf: White and Red top
The transfer of heat through a material.
What is conduction.
The volume of a gas varies inversely with the absolute pressure at a constant temperature.
What is Boyle's Law
What action should be taken: low side pressure of 50 psi, high side pressure of 60 psi.
Test compressor operation, for variable displacement compressor, test variable control valve.
Another name for a wobbling plate that drives pistons in the compressor.
What is a swash plate.
Automotive refrigerant that is slightly flammable.
What is R1234yf.
CFC
What is Chlorofluorocarbon
The type of heat that travels between objects through space.
What is radiation.
The volume of a fixed mass gas held at a constant pressure varies directly with the change in absolute temperature.
What is Charles' Law.
What action should be taken: low side pressure of 30 -35 psi, high side pressure of 300 psi.
What is check for air flow through condenser, fan operation, and if good search for blockage in the high side.
Two switches that control the operation of the compressor clutch.
What are the low pressure and high pressure cycling switch.
78% of the air we breath is ____________, 21% is ___________, and 1% is ____________.
What is 78% Nitrogen, 21% oxygen and 1% "other" elements.
Mobile refrigeration is regulated under what section of the 1990 clean air act.
What is section 609 of the Clean Air Act of 1990.
Heat travels from _________ surface to a _________ surface.
What is heat travels from a warm surface to a cold surface.
The total pressure of a confined mixture in a sealed container is equal to the sum of the pressure of each gas in the mixture.
What is Dalton's Law.
What is suspect moisture in the system.
The oil in the refrigeration system is not evenly distributed, approximately _____ % is in the compressor.
What is 50%.