Tables for refrigerant of R134a in the domestic refrigerator

CHAPTER -4

RESULTS & DISCUSSION

4.1 Beginning Action on Active Algidity Babysitter

4.1.1 Tables for refrigerant of R134a in the calm refrigerator

Table account taken from the action of R134a refrigerant placed aural the beginning setup. Note the account of compressor water, automated accessory aperture condenser outlet, evaporator temperature burden & of assorted ambit aural the setup. This is the accustomed calm refrigerator accepting refrigerant 180 grams placed in the system.

Table 4.1.1 Account of R134a Refrigerant after Calefaction Exchanger

Operating freezer point

Time taken for 5 revolution

T1

0c

T2

0c

T3

0c

P1

(bar)

P2

(bar)

P3

(bar)

1

2

3

4

61:07

61:12

60:00

59:00

-3.7

-5.9

-9.3

-11

53

56.9

57.5

60

40

42

44

46

0.68

0.62

0.55

0.55

9.6

10.34

11.72

11.72

9.31

9.65

11.03

11.03

This is the calefaction exchanger calm refrigerator accepting refrigerant 150 grams placed in the system, beginning bureaucracy is aforementioned & action is aforementioned as accustomed calm refrigerator.

Table 4.1.2 Account of R134a Refrigerant with Calefaction Exchanger

Operating freezer point

Time taken for 5 revolution

T1

0c

T2

0c

T3

0c

P1

(bar)

P2

(bar)

P3

(bar)

1

2

3

4

5

6

46:10

49:18

50:30

49:29

51:20

53:12

-7.9

-7.9

-9.6

-12

-15

-17.8

54.8

54.9

55.6

57

58.5

59.2

44.3

42.3

41.6

42.6

43

43.1

0.68

0.55

0.58

0.58

0.37

0.344

17.24

15.51

15.72

15.86

15.17

15.17

16.55

14.62

15.03

15.17

14.48

14.48

4.1.2 Tables for refrigerant of R410a in the calm refrigerator

Table 4.1.2.1 Account for R410a after Calefaction Exchanger

Table account taken from the beginning action of R410a refrigerant placed in the beginning setup

Operating freezer point

Time taken for 5 revolution

T1

0c

T2

0c

T3

0c

P1

(bar)

P2

(bar)

P3

(bar)

1

2

3

4

5

6

7

38:12

37:59

38:90

39:10

39:38

37:59

37:34

-10

-10.6

-12

-14.1

-16.8

-18.7

-19.6

55.9

57.4

56.8

57.2

58.4

59.3

60

45.2

45.1

43.9

43

44

43.8

44.3

1.24

1.24

1.103

1.103

1.17

1.24

1.24

32

32

30

30

30.6

30.6

31.37

31.72

31.72

29.65

29.65

30.34

31

31

. Note bottomward account as per action placed in third chapter-3

This is the accustomed calm refrigerator accepting refrigerant 120 grams placed in the system

Table 4.1.2.2 Account for R410a Refrigerant with Calefaction Exchanger

Operating freezer point

Time taken for 5 revolution

T1

0c

T2

0c

T3

0c

P1

(bar)

P2

(bar)

P3

(bar)

1

2

3

4

5

6

7

39:18

37:05

36:10

36:10

35:99

37:10

37:10

-10

-10

-11.5

-13.7

-15

-16.3

-18.4

50.7

51.7

52.3

53.1

52.9

52.3

52.7

41.9

42.4

42.6

42.8

42

42.1

42.2

1.03

1.24

1.24

1.24

1.103

1.172

1.103

29.3

30

30.34

31

30.68

30.68

30.68

28.96

29.65

30.00

30.34

30.34

30.55

30.34

This is the calefaction exchanger calm refrigerator accepting refrigerant 105 grams placed in the system. Beginning bureaucracy is aforementioned & action is aforementioned as accustomed calm refrigerator.

4.2 Calculation the Coefficient of Achievement a Refrigerator Tutor

4.2.1 Calculating COP of R134a Accustomed & Calefaction Exchanger Calm Refrigerator

Sample Calculation for R134a Accustomed Refrigerator:

Taking valves from table 4.1.1 of afterward parameter

Evaporator temperature :T1 0c:-9.3

Pressure (bar) : P1:0.55

Compressor temperature (outlet): T2 0c:57.5

Pressure (bar): P2:11.72

Condenser temperature (outlet):T3 0c:44

Pressure (bar): P3:11.03

Taking account and seeing enthalpy ethics from the abstracts handbook with accepting refrigerant R134a PH chart

Evaporator enthalpy H1:585KJ/Kg K

Compressor enthalpy H2:615KJ/Kg K

Condensed enthalpy H3:460KJ/Kg K

C.O.P :(H1-H3)/(H2-H1)

:(585-460)/ (615-585)

C.O.P:4.16

Sample Calculation for R134a with Calefaction Exchanger Refrigerator:

Taking valves from table 4.1.2 of afterward parameter

Evaporator temperature :T1 0c:-9.6

Pressure (bar) : P1:0.58

Compressor temperature (outlet): T2 0c:55.6

Pressure (bar): P2:15.72

Condenser temperature (outlet):T3 0c:41.6

Pressure (bar): P3:15.03

Taking account and seeing enthalpy ethics from the abstracts handbook with accepting refrigerant R134a PH chart

Evaporator enthalpy H1:587KJ/Kg K

Compressor enthalpy H2:617KJ/Kg K

Condensed enthalpy H3:458KJ/Kg K

C.O.P :(H1-H3)/ (H2-H1)

:(587-458)/ (617-587)

C.O.P:4.3

Refrigerating point

-9.5

-13.5

-17.5 for H.E

R134a without

Heat Exchanger

4.16

3.81

3.5

R134a with

Heat Exchanger

4.3

3.87

3.64

Table 4.2.1 C.O.P of R134a refrigerant with &without H.E

Figure 4.2.1 Graph Shows C.O.P of R134a refrigerant with & after H.E

4.2.2 Calculating COP of R1410a Accustomed & Calefaction Exchanger Calm Refrigerator

Sample Calculation for R410a Accustomed Refrigerator:

Taking valves from table 4.1.2.1 of afterward parameter

Evaporator temperature :T­1 0c:-12

Pressure (bar) : P1:1.103

Compressor temperature (outlet): T2 0c:56.8

Pressure (bar): P2:30

Condenser temperature (outlet):T3 0c:43.9

Pressure (bar): P3:29.65

Taking account and seeing enthalpy ethics from the abstracts handbook with accepting refrigerant R410a PH chart

Evaporator enthalpy H1:434.6KJ/Kg K

Compressor enthalpy H2:441KJ/Kg K

Condensed enthalpy H3:423KJ/Kg K

C.O.P :(H1-H3)/ (H2-H1)

:(434.6-423)/ (441-434.6)

C.O.P:1.81

Sample Calculation for R410a with Calefaction Exchanger Refrigerator:

Taking valves from table 4.1.2.2 of afterward parameter

Evaporator temperature :T1 0c:-11.5

Pressure (bar) : P1:1.24

Compressor temperature (outlet): T2 0c:52.3

Pressure (bar): P2:30.34

Condenser temperature (outlet):T3 0c:42.6

Pressure (bar): P3:30.00

Taking account and seeing enthalpy ethics from the abstracts handbook with accepting refrigerant R410a PH chart

Evaporator enthalpy H1:414.9KJ/Kg K

Compressor enthalpy H2:425.4KJ/Kg K

Condensed enthalpy H3:436.4KJ/Kg K

C.O.P :(H1-H3)/ (H2-H1)

:(414.9-436.4)/ (414.9-425.4)

C.O.P:2.047

Table 4.2.2 Represent C.O.P of R410a after & With H.E

Coefficient of achievement (COP)

R410a after calefaction exchanger

2.33

1.81

1.42

1.7

1.58

R410a

heat exchanger

3.57

2.04

1.74

1.83

1.92

Figure 4.2.2 Graph Shows COP Of R410a after & With H.E

4.3 Comparison of Acquittal Temperature of R134 & R410a Refrigerant

4.3.1 Comparison of Acquittal Temperature of R134a after & With H.E:

Following table appearance aberration amid accustomed & calefaction exchanger algidity babysitter alive of compressor acquittal temperature appropriately shows the by application calefaction exchanger there is abatement in temperature . This leads to advance the achievement of arrangement compared to accustomed refrigerator tutor

Table 4.3.1 Shows Compressor Acquittal Temperature of Accustomed & H.E Tutor

SNO

EVAPORATURE TEMPERATURE

OF R134a

DISCHARGE TEMPERATURE

OC

1

2

3

4

Normal R.F

With H.E

Normal R.F

With H.E

-3.7

-5.9

-9

-11.1

-7.9

-9.6

-15

-19

55.6

56.8

57

62

54.8

55.6

58.5

60.1

Figure 4.3.1 Graph Shows Compressor Acquittal Temperature Difference

4.3.2 Comparison of Acquittal Temperature of R410a after & With H.E:

Following table appearance aberration amid accustomed & calefaction exchanger algidity babysitter alive of compressor acquittal temperature appropriately shows the by application calefaction exchanger there is abatement in temperature . This leads to advance the achievement of arrangement compared to accustomed refrigerator tutor

Table 4.3.2 Shows Compressor Acquittal Temperature of Accustomed & H.E System

SNO

EVAPORATURE TEMPERATURE OF R410a

DISCHARGE TEMPERATURE

0c

1

2

3

4

5

Normal R.F

With H.E

Normal R.F

With H.E

-10

-12

-14

-16.8

-19.6

-10

-11.2

-15

-18

-19

55.9

56.8

57.2

58.4

60

50.7

52.3

52.9

53.5

52.7

Figure 4.3.2 Graph Shows Compressor Acquittal Temperature Difference

4.4 Comparison of Refrigerator Babysitter Active Time by Application Various Refrigerants in the System

4.4.1 Comparing Active Time Burning R134a Refrigerator Babysitter After & With H.E:

When active of refrigerator babysitter time calculates to get final algidity aftereffect in the evaporator, back staring from end of absolute time is taken by the refrigerator tutor.

Table 4.4.1 Time Taken for Active R134a Refrigerator Babysitter after & with H.E

SNO

EVAPORATOR TEMPERATURE POINT R134a

TIME TAKEN GRADUALLY MINUTES

1

2

3

4

5

6

Normal R.F

12.2

1.3

-3.7

-5.9

-7.7

-9

With H.E

-10

-17.9

-20.1

-20.8

Normal R.F

10

10

10

10

10

10

With H.E

10

10

10

3

In this action begin that time is decreased back tin the H.E refrigerator active time compared to accustomed refrigerator after H.E.

Figure 4.4.1 Graph Shows Aberration of Time Taken for Active Algidity system

4.4.2 Comparing Active Time Burning R410a Refrigerator Babysitter After & With H.E:

When the active approach of refrigerator babysitter time account to get final algidity aftereffect in the evaporator, back staring from end of absolute time is taken by the refrigerator babysitter .In this action begin that time is decreased back tin the H.E refrigerator active time compared to accustomed refrigerator after H.E.

Table 4.4.2 Time Taken for Active R410a Refrigerator after & with H.E

SNO

EVAPORATOR TEMPERATURE

R410a

TIME TAKEN GRADUALLY MINUTES

1

2

3

4

Normal R.F

With H.E

Normal R.F

With H.E

-6.9

-14.6

-16.9

-20.1

0.9

-10.7

-16.4

-20.5

20

50

60

80

10

20

30

47

Figure No 4.4.2 Shows Aberration of Time Taken For Active Refrigeration

4.5 Calculating Activity Burning of Various Refrigerant application after & with H.E

4.5.1 Calculating the Activity Burning for the Calm Refrigerator for Active System:

By giving electric ability to refrigerator babysitter activity beat placed to achievement accumulation to account activity burning .Taking the account from table 4.1.1&4.1.2 evaporator, 5 anarchy of activity beat in seconds. Hence account the activity burning into hours.

At -9ºc freezer point time taken for 5 anarchy of activity beat is 60second

Energy beat connected :1200revolution: 1 KW

:1200=3600Kj

1 revolution:3600/1200 Kj/rev

For 5 anarchy :(5*3600)/ (60*1200)

Energy consumption: 0.25Kw-hr

Table 4.5.1 Account of Activity Burning (KW) of Calm Refrigerator during operation

Freezer absolute point OC

-3.7

-5.9

-9

-11.1

R134a

Without H.E

0.2456

0.245

0.25

0.254

R134a

With H.E

0.325

0.298

0.292

0.288

Figure 4.5.1 Shows the Aberration of Activity Burning in After & With H.E

4.5.2 Calculating the Activity Burning for the Calm Refrigerator for Active System:

By giving electric ability to refrigerator babysitter activity beat placed to achievement accumulation to account activity burning .Taking the account from table 4.1.2.1 & 4.1.2.2 evaporator, 5 anarchy of activity beat in seconds. Hence account the activity burning into hours.

At -10ºc freezer point time taken for 5 anarchy of activity beat is 38.12second

Energy beat connected :1200revolution: 1 KW

:1200=3600KJ

1 revolution:3600/1200 KJ/rev

For 5 anarchy :(5*3600)/ (38.12*1200)

Energy consumption: 0.393kw-hr

Table 4.5.2 Account of Activity Burning (kw) of Calm Refrigerator during Operation

Freezer absolute point OC

-10

-12

-14.1

-16.8

-19.6

R410a After H.E

0.393

0.385

0.383

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