WORD LIST Flashcards
Global warming
An earth warming process caused by the atmospheres absorption of the heat energy radiated from the surface
HC
Hydrocarbons
Organic compounds containing hydrogen and carbon found in many heating fuels
Low loss fittings
A fitting that is fastened to the end of a gauge manifold that allows the technician to connect and disconnect gauge lines with a minimum of refrigerant loss
ODP
A scale used to measure how much a substance will deplete stratospheric ozone ODP from 0 to 1
Temperature glide
When a refrigerant blend has different temperatures when it evaporates and condensate at a single given pressure
Zeotrope
Two or more refrigerants mixed together that will have a range of boiling and condensing points for each system pressure, noticeable fractionation and temperature glide will occur.
Azeotropes
Two or more refrigerants mixed together that will have only one boiling point and condensing point for each system pressure negligible fractionation or temperature glide will occurr
GWP
An index that measures the direct effect of chemicals emitted into the atmosphere
HCFC
Hydrochlorofluorocarbons
Refrigerant containing hydrogen, chlorine, fluorine, and carbon, thought to contribute to the depletion of the ozone layer not to the extent of CFC
Montreal protocol
An agreement signed in 1987 by the united state and other countries to control the release of ozone-depleting substance
Piercing valve
A devise that is used to pierce a pipe or tube to obtain a pressure reading with out interrupting the flow of fluid, also called a line tap valve
TEWI
Total equivalent warming impact,
A global warming index that takes into account both the direct effects of chemicals emitted into the atmosphere and the indirect effects caused by systems inefficiencies
Fractionation
When a zeotropic refrigerant blend phase changes, the different components in the blend all have different vapors pressure, this cause different vaporization and condensation rates and temperature
Greenhouse effect
An earth warming process caused by the atmospheres absorption of the heat energy radiated from the earth surface. Often referred to as global warming
HFC
Hydrofluorocarbon
A chlorine-free refrigerant containing hydrogen, fluorine, and carbon with zero ozone depletion potential
