\ 2. R22 vapor compression refrigeration syters weth the capadily of 12 TR is working at the condenset and evaporator temperatures of

40\\\\deg C

and

-20\\\\deg C

, respectively. The refrigerant

R22

is subcooled by

5\\\\deg C

before throtting and the vaoour is superheated by

15\\\\deg C

before leaving the evaporator\ There are pressure losses of

$0KPa

at the compressor suction valve and

30kPa

at compresso 0.5 bar.\ discharse valve Assume that there are no pressure losses at condenser and evaporator The compression is isentropicprocess Oraw alt processes of the system on P-h diagram Psuction valus 2.65 bar\ Deteinine:\ 21: ieliscrating effectiper ks of refrisy\ 2.2. Mass flow tate of ceftigerant 0.26\ 165 Naks

+60-170

P_(3)^(')

bar\ 23.Powerceaviredzax compresso 15.99 0.26

P_(1)^(')

52.15 bar pdischagned

vv617,5+0.5

26.0002 .6766\ 15.09 2. 41102\ 25 Whithoutsobcooting:and superhealing processes, determine the COP of this system

2. R22 vapor compression refigeration syatern with the capadily of 12 TR is working at the condenset and evaporator temperatures of 40C and 20C, respectively. The refrigerant R22 is subcooled by 5C before throtting and the vapouris superheated by 15C before leaving the evaporator. There are a pressure lasses of $0kPa at the compressot suction valve and 30kPa at compressot 0,5 bar. discharge valve. Assume that there are no pressure losses at condenser and evaporator The compression is isentropicincoess Draw alt processes of the system on P-h dagram Psuctionualus 2.65 bar Determines 21 Reliscating effect per ks of refrise 2.2 Mass flow rate of teltigerant 0.26 165 P36 2,650,5bar 23. Powe requlredby compessor 15.9915.09 P3 2.15bar 20.0002 .626 Pdischagned 617.5+0