Refrigerants in Hvac

 Refrigerants

It is a fluid which carries  Absorbed & reject heat in a refrigeration cycle

Types of refrigerants on the basis of chemical composition

CFC

 Chloro fluoro carbon

HCFC 

Hydro chloro fluoro carbon

HFC

Hydro fluoro carbon 

This is Eco friendly refrigerant

Refrigerants specification 

R11 

CCL3F

Trichloro monofloro methane

Cylinder color

Orange🟠

R12

CCL2F2

Dichloro Difloro methane

Cylinder color

White⚪

R22

CHCLF2

Monochloro Difloro methane

Cylinder color

Green 🟢

R134 A

C2H2F4

Tetrafluoro Ethane 

Cylinder color

Gray

R 410 A

HFC

Hydrofluoro carbon

Cylinder color

Pale pink

R 717

Ammonia

Cylinder color

Silver 🥈

Properties of Refrigerants

Non poisnous

Non explosive

Non corrosive

Non flammable

Non toxic

Easy leak detector

Operatable under low pressure

Stable

Important Note📝

One TR AC requires 1.2 kg refrigerant