R12 CCL2F2 FREON 12
R22
CHCLF2 FREON 22
R502 CHCLF2 / CCLF2CF3
FOR FREON 12
Actual refrigeration effect = 400 kj/m3
compression heat= 66kj/kg
FREON 11 (VERY LOW PRESSUREFRERIGERANT ; suitable for large air conditioning installations)
FREON 22 (suitable for low temperatures without negative evaporator pressure in vaccum)
FREON 502 (for hermetic i-e integral gas tight motor and compressor)
THERE IS NO IDEAL CHOICE IN THE FREON GROUP AS THERE ARE ADVANTAGES AND DISADVANTAGES FOR R11 ( CC;3F)
FOR GOOD HEAT ENERGY TRANSFER RATE AT A TEMPERATURE DIFERRENTIAL OF ABOUT 8DEGREES BETWEEN COOLING WATER INLET AND CONS\DENSATION TEMPERATURE IS USUAL.
R502 CHCLF2 / CCLF2CF3
FOR FREON 12
Actual refrigeration effect = 400 kj/m3
compression heat= 66kj/kg
FREON 11 (VERY LOW PRESSUREFRERIGERANT ; suitable for large air conditioning installations)
FREON 22 (suitable for low temperatures without negative evaporator pressure in vaccum)
FREON 502 (for hermetic i-e integral gas tight motor and compressor)
THERE IS NO IDEAL CHOICE IN THE FREON GROUP AS THERE ARE ADVANTAGES AND DISADVANTAGES FOR R11 ( CC;3F)
FOR GOOD HEAT ENERGY TRANSFER RATE AT A TEMPERATURE DIFERRENTIAL OF ABOUT 8DEGREES BETWEEN COOLING WATER INLET AND CONS\DENSATION TEMPERATURE IS USUAL.
WRITTEN BY S/C ZEESHAN
AHMED (A/C 2988)
INSTRUCTOR: CHIEF ENGINEER TAHIR JAMIL
DATE: 25/10/2009
TIME: 10:05:00 AM
