Mod 13 Flashcards
What does GWP stand for?
Global warning potential
What PPE do we need to wear for air con?
Protective goggles, gloves made fron fluoroelastomer, long sleeves, and long trousers
What does MAC stand for, and when was it introduced?
Mobile air conditioning, 4th July 2010
What is heat measured in?
Joules
What is the boiling point of R134a?
-26.3oc at normal atmospheric pressure
What are the characteristics of R134a?
Odourless, non-toxic, non explosive
What is the global warming potential of CO2?
1
What is the GWP of R1234yf
4
What are the characteristics of R1234yf
Not compatible with R134a systems, slightly flammable, requires different equipment to service, different size parts than R134a
What is the boiling point of R1234yf?
-30
What does MAC say is the maximum GWP we are allowed?
150
What is the leakage rate of 150 GWP
40 grams
What is the gwp of 134a?
1300
What are the three natural laws of physics used to provide a functioning AC?
Heat=temperature=pressure
What are the three heat transfers?
Conduction (e.g, physical contact - touching a hot surface)
Convention (e.g, air movement - feeling warmth from a fan heater)
Radiation (e.g, solar rays - heat from the sun)
