Feeling the
Pressure
Pressure
The force of a gas against a surface, measured in PSI equal to gage pressure 14.7.
Absolute Pressure
Established in 1997 this Protocol Calls for the reduction of greenhouse by an average of 5.25% from 1990 in developing countries.
Kyoto Protocol
CFC (chlorflourocarbons)
HCFC (Hydrochlorflourocarbons)
HFC (Hydroflouracarbons)
What component of the Refrigeration Cycle is responsible for superheating the Refrigerant into a Vapor
Evaporator
R-410A Refrigerant can only me mixed with this Refrigerant when recovering into a Grey and Yellow Recovery Bottle?
R-410A
A Device that senses and measures pressures above and below atmospheric pressure.
Compound Gauge (low-side /gauge)
In What year did the Department of Energy require that air conditioner systems efficiencies be raised from 10 seer to 12 Seer
2006
Nicknamed ASHRAE who standardized refrigerant identification
American Society of Refrigerating and Air Conditioning Engineers
What Lubricants are Hygroscopic (absorb moisture and strongly hold this moisture)
POE Lubricants
After securing Power to a system you show attach what to ensure your safety?
Lockout or Tag out System
A Mechanical Pump in a refrigeration system that intakes refrigerant vapor and raises its temperature and pressure to the point where it can be condensed for re-use.
Compressor
According to the Montreal Protocol Established in 1987 By what year is the United States required to stop Production and importation of any HCFC refrigerants?
2030
In Zeotropic blends This change in composition can lead to uneven Saturation or Leak at a faster rate than prescribed.
Fractioning
In what process do you use the Term Dewpoint
Super_______
and Which process uses the term Bubble point
Super_______
Superheat
SuperCool
What temperature must you store a R-410A below to avoid dangerous conditions?
125 degrees F or 52 degrees C
The Pressure in Which a Gas becomes a liquid: varies with pressure
Condensing pressure
According to the Clean air Act on What Date must we discontinue the use of any HCFC based R-22 in New equipment.
And What date date is R-22 no longer available for production or importing.
January 1 2010, and 2020
Condensor Subcooling
and Evaporator Super Heating is measured how?
Degrees Fahrenheit or celsius
a Pure compound boils and condenses at a constant ___________ for a given pressure.
Temperature
What is the Max Fill Percentage of a Recovery Tank to allow for expansion?
80%
The Loss of fluid pressure due to friction created by Valves and or uneven inner surfaces in a pipping system.
Pressure Drop
What is 1974
What two compounds make up R-410A
Diflouromethane 50% and
Pentaflouramethane 50%
Calculate Superheat Given the Following information.
Suction Line Temp= 55
Suction Line Pressure according to your Gauges= 135
8-10 degrees
(Material Safety Data Sheet) explains the First Aid measures for Refrigerant if exposed to your SKIN, EYES, Ingestion or Inhalation.
Section 4