Tables for refrigerant of R134a in the domestic refrigerator Essay

Chapter -4

RESULTS & A ; DISCUSSION

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4.1 Experimental Procedure on Runing Refrigeration Tutor

4.1.1 Tables for refrigerant of R134a in the domestic icebox

Table reading taken from the procedure of R134a refrigerant placed within the experimental apparatus - Tables for refrigerant of R134a in the domestic refrigerator Essay introduction. Note the reading of compressor H2O, mechanical device mercantile establishment capacitor mercantile establishment, evaporator temperature force per unit area & A ; amp ; of varied parametric quantities within the apparatus. This is the normal domestic icebox holding refrigerating 180 gms placed in the system.

Table 4.1.1 Reading of R134a Refrigerant without Heat Exchanger

Operating deep-freeze point

Time taken for 5 revolution

Thymine1

0degree Celsiuss

Thymine2

0degree Celsiuss

Thymine3

0degree Celsiuss

Phosphorus1

( saloon )

Phosphorus2

( saloon )

Phosphorus3

( saloon )

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 heat exchanger domestic icebox holding refrigerating 150 gms placed in the system, experimental apparatus is same & A ; process is same as normal domestic icebox.

Table 4.1.2 Reading of R134a Refrigerant with Heat Exchanger

Operating deep-freeze point

Time taken for 5 revolution

Thymine1

0degree Celsiuss

Thymine2

0degree Celsiuss

Thymine3

0degree Celsiuss

Phosphorus1

( saloon )

Phosphorus2

( saloon )

Phosphorus3

( saloon )

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 domestic icebox

Table 4.1.2.1 Reading for R410a without Heat Exchanger

Table reading taken from the experimental process of R410a refrigerant placed in the experimental apparatus

Operating deep-freeze point

Time taken for 5 revolution

Thymine1

0degree Celsiuss

Thymine2

0degree Celsiuss

Thymine3

0degree Celsiuss

Phosphorus1

( saloon )

Phosphorus2

( saloon )

Phosphorus3

( saloon )

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 down reading as per process placed in 3rd chapter-3

This is the normal domestic icebox holding refrigerating 120 gms placed in the system

Table 4.1.2.2 Reading for R410a Refrigerant with Heat Exchanger

Operating deep-freeze point

Time taken for 5 revolution

Thymine1

0degree Celsiuss

Thymine2

0degree Celsiuss

Thymine3

0degree Celsiuss

Phosphorus1

( saloon )

Phosphorus2

( saloon )

Phosphorus3

( saloon )

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 heat exchanger domestic icebox holding refrigerating 105 gms placed in the system. Experimental apparatus is same & A ; process is same as normal domestic icebox.

4.2 Calculation the Coefficient of Performance a Refrigerator Coach

4.2.1 Calculating COP of R134a Normal & A ; Heat Exchanger Domestic Refrigerator

Sample Calculation for R134a Normal Refrigerator:

Taking valves from table 4.1.1 of following parametric quantity

Evaporator temperature: Thymine10degree Celsiuss: -9.3

Pressure ( saloon ) : Phosphorus1:0.55

Compressor temperature ( mercantile establishment ) : Thymine20c:57.5

Pressure ( saloon ) : P2:11.72

Condenser temperature ( mercantile establishment ) : Thymine30c:44

Pressure ( saloon ) : Phosphorus3:11.03

Taking reading and seeing enthalpy values from the informations enchiridion with holding refrigerating R134a PH chart

Evaporator heat content H1:585KJ/Kg K

Compressor heat content H2:615KJ/Kg K

Condensed heat content 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 Heat Exchanger Refrigerator:

Taking valves from table 4.1.2 of following parametric quantity

Evaporator temperature: Thymine10degree Celsiuss: -9.6

Pressure ( saloon ) : Phosphorus1:0.58

Compressor temperature ( mercantile establishment ) : Thymine20c:55.6

Pressure ( saloon ) : Phosphorus2:15.72

Condenser temperature ( mercantile establishment ) : Thymine30c:41.6

Pressure ( saloon ) : Phosphorus3:15.03

Taking reading and seeing enthalpy values from the informations enchiridion with holding refrigerating R134a PH chart

Evaporator heat content H1:587KJ/Kg K

Compressor heat content H2:617KJ/Kg K

Condensed heat content 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 & A ; without H.E

Figure 4.2.1 Graph Shows C.O.P of R134a refrigerant with & A ; without H.E

4.2.2 Calculating COP of R1410a Normal & A ; Heat Exchanger Domestic Refrigerator

Sample Calculation for R410a Normal Refrigerator:

Taking valves from table 4.1.2.1 of following parametric quantity

Evaporator temperature: T­10degree Celsiuss: -12

Pressure ( saloon ) : Phosphorus1:1.103

Compressor temperature ( mercantile establishment ) : Thymine20c:56.8

Pressure ( saloon ) : Phosphorus2:30

Condenser temperature ( mercantile establishment ) : Thymine30c:43.9

Pressure ( saloon ) : Phosphorus3:29.65

Taking reading and seeing enthalpy values from the informations enchiridion with holding refrigerating R410a PH chart

Evaporator heat content H1:434.6KJ/Kg K

Compressor heat content H2:441KJ/Kg K

Condensed heat content 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 Heat Exchanger Refrigerator:

Taking valves from table 4.1.2.2 of following parametric quantity

Evaporator temperature: Thymine10degree Celsiuss: -11.5

Pressure ( saloon ) : Phosphorus1:1.24

Compressor temperature ( mercantile establishment ) : Thymine20c:52.3

Pressure ( saloon ) : Phosphorus2:30.34

Condenser temperature ( mercantile establishment ) : Thymine30c:42.6

Pressure ( saloon ) : Phosphorus3:30.00

Taking reading and seeing enthalpy values from the informations enchiridion with holding refrigerating R410a PH chart

Evaporator heat content H1:414.9KJ/Kg K

Compressor heat content H2:425.4KJ/Kg K

Condensed heat content 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 without & A ; With H.E

Coefficient of public presentation ( COP )

R410a without heat money changer

2.33

1.81

1.42

1.7

1.58

R410a

heat money changer

3.57

2.04

1.74

1.83

1.92

Figure 4.2.2 Graph Shows COP Of R410a without & A ; With H.E

4.3 Comparison of Discharge Temperature of R134 & A ; R410a Refrigerant

4.3.1 Comparison of Discharge Temperature of R134a without & A ; With H.E:

Following tabular array show difference between normal & A ; heat money changer infrigidation coach working of compressor discharge temperature therefore shows the by utilizing heat money changer there is lessening in temperature. This leads to better the public presentation of system compared to normal icebox coach

Table 4.3.1 Shows Compressor Discharge Temperature of Normal & A ; H.E Tutor

SNO

EVAPORATURE TEMPERATURE

OF R134a

DISCHARGE TEMPERATURE

OxygenC

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 Discharge Temperature Difference

4.3.2 Comparison of Discharge Temperature of R410a without & A ; With H.E:

Following tabular array show difference between normal & A ; heat money changer infrigidation coach working of compressor discharge temperature therefore shows the by utilizing heat money changer there is lessening in temperature. This leads to better the public presentation of system compared to normal icebox coach

Table 4.3.2 Shows Compressor Discharge Temperature of Normal & A ; H.E System

SNO

EVAPORATURE TEMPERATURE OF R410a

DISCHARGE TEMPERATURE

0degree Celsiuss

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 Discharge Temperature Difference

4.4 Comparison of Refrigerator Tutor Running Time by Using Assorted Refrigerants in the System

4.4.1 Comparing Runing Time Consumption R134a Refrigerator Tutor Without & A ; With H.E:

When running of icebox coach clip calculates to acquire concluding infrigidation consequence in the evaporator, when gazing from terminal of cut-off clip is taken by the icebox coach.

Table 4.4.1 Time Taken for Runing R134a Refrigerator Tutor without & A ; 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 procedure found that clip is decreased when Sn the H.E icebox running clip compared to normal icebox without H.E.

Figure 4.4.1 Graph Shows Difference of Time Taken for Runing Refrigeration system

4.4.2 Comparing Runing Time Consumption R410a Refrigerator Tutor Without & A ; With H.E:

When the running manner of icebox coach clip calculate to acquire concluding infrigidation consequence in the evaporator, when gazing from terminal of cut-off clip is taken by the icebox coach.In this procedure found that clip is decreased when Sn the H.E icebox running clip compared to normal icebox without H.E.

Table 4.4.2 Time Taken for Runing R410a Refrigerator without & A ; 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 Difference of Time Taken For Runing Refrigeration

4.5 Calculating Energy Consumption of Various Refrigerant utilizing without & A ; with H.E

4.5.1 Calculating the Energy Consumption for the Domestic Refrigerator for Runing System:

By giving electric power to refrigerator coach energy metre placed to end product supply to cipher energy ingestion.Taking the reading from table 4.1.1 & A ; 4.1.2 evaporator, 5 revolution of energy metre in seconds. Hence calculate the energy ingestion into hours.

At -9?c deep-freeze point clip taken for 5 revolution of energy metre is 60second

Energy metre changeless:1200revolution: 1 KW

:1200=3600Kj

1 revolution:3600/1200 Kj/rev

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

Energy ingestion: 0.25Kw-hrTable 4.5.1 Reading of Energy Consumption ( KW ) of Domestic Refrigerator during operation

Freezer cut-off 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 Difference of Energy Consumption in Without & A ; With H.E

4.5.2 Calculating the Energy Consumption for the Domestic Refrigerator for Runing System:

By giving electric power to refrigerator coach energy metre placed to end product supply to cipher energy ingestion.Taking the reading from table 4.1.2.1 & A ; 4.1.2.2 evaporator, 5 revolution of energy metre in seconds. Hence calculate the energy ingestion into hours.

At -10?c deep-freeze point clip taken for 5 revolution of energy metre is 38.12second

Energy metre changeless:1200revolution: 1 KW

:1200=3600KJ

1 revolution:3600/1200 KJ/rev

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

Energy ingestion: 0.393kw-hr

Table 4.5.2 Reading of Energy Consumption ( kilowatt ) of Domestic Refrigerator during Operation

Freezer cut-off point OC

-10

-12

-14.1

-16.8

-19.6

R410a Without H.E

0.393

0.385

0.383

0.380

0.401

R410a

With H.E

0.382

0.415

0.416

0.415

0.404

Figure 4.5.2 Shows the Difference of Energy Consumption in Without & A ; With H.E

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