Comparative study of varies properties of refrigerant using CFD study

Department of Mechanical Engineering 61

Fig. 6.11 Variation of the Vapor Phase of R410A along length of the capillary tube.

Fig. 6.12 Variation of the Liquid Phase of R410A along length of the capillary tube.

Comparative study of varies properties of refrigerant using CFD study

Department of Mechanical Engineering 62

Fig. 6.13 Pressure examination diagram

LENGTH (m) R22 R404A R410A

0 1.10e+06 1.10e+06 1.10e+06

0.25 1.09e+06 1.10e+06 1.09e+06

0.5 1.08e+06 1.08e+06 1.06e+06

0.75 1.07e+06 1.06e+06 1.03e+06

1 1.06e+06 1.04e+06 1.00e+06

1.25 1.05e+06 1.03e+06 9.50e+05

1.5 1.04e+06 9.90e+05 8.90e+05

1.75 9.70e+05 8.20e+05 7.40e+05

2 6.90e+05 6.00e+05 4.50e+05

2.23 3.50e+04 3.50e+04 3.50e+04

Tab.6.1 Pressure examination Table

0.00E+00

2.00E+05

4.00E+05

6.00E+05

8.00E+05

1.00E+06

1.20E+06

0 0.25 0.5 0.75 1 1.25 1.5 1.75 2 2.25 2.5

Pressure ( Pascal )

Length of the Capillary Tube

PRESSURE Vs LENGTH OF THE CAPILLARY TUBE

R22

R404A

R410A

Comparative study of varies properties of refrigerant using CFD study

Department of Mechanical Engineering 63

CONCLUSION

A two-stage homogeneous stream show has been connected to decide the refrigerant stream qualities in adiabatic capillary tube. The fundamental physical conditions overseeing capillary tube stream are built up from the preservation of mass, vitality and energy.

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By utilizing the familiar,

Simulation was performed utilizing the present model for the majority of the refrigerants R -22, R -404A and R -410A. By fluctuating the model info parameters for all refrigerants, it was discovered that the more current elective refrigerants R404A and R410A gives a higher pressure drop than Comparative study of varies properties of refrigerant using CFD study the conventional refrigerants R22 for both single-stage and two-stage areas which came about along capillary tube length.

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Department of Mechanical Engineering 64

REFERENCES

1. Sami SM, Song B. Warmth exchange and weight drop qualities of HFC quarternary refrigerant blends inside flat improved surface tubing.

Connected Thermal Engineering 1996; 16(6):461 - 73.

2. S.J. Smith, L. Shao, S.B. Riffat .Pressure drop of HFC refrigerants inside evaporator and condenser curls as controlled by CFD . Connected Energy 70 (2001) :169 - 178

Comparative study of varies properties of refrigerant using CFD study Department of Mechanical Engineering 65

3. Wongwiscs, T. Songnetichaovalit, N. Lokathada, P. Kritsadathikarn, M. Suchatawat and W. Pirompak. A COMPARISON OF THE FLOW

CHARACTERISTICS OF REFRIGERANTS FLOWING THROUGH ADIABATIC CAPILLARY TUBES Heat Mass Transfer, Vol. 27, No. 5,

pp. 611 -621, 2000

4. Thermodynamic Properties of Refrigerants and Refrigerant Mixtures, adaptation 6.01, G aithersburg, M.D. National Institute of Standards and Technology (1998).

5. Bittle, R. R. what's more, Pate, M. B., ""A Theoretical Model for Predicting Adiabatic Capillary Tube Performance with Alternatives

Refrigerants"", ASHRAE Trans Vol. 102, Pt.2 (199 6).

6. Kim, R. H., ""A Numerical Analysis of a Capillary Tube Expansion Valve in a Vapor Pressure Refrigeration System with Alternative Refrigerants"", ASME 1993, HTD -Vol.243, Heat Transfer With Alternate Refrigerants (1993)

7. S. G. Kim, M. S. Kim1, S . T. Ro Experimental examination of the execution of R22, R404A and R410A in a few slender cylinders for climate control systems. Refrigeration 25 (2002) 521 - 531

8. Kuehl SJ, Goldschmidt VW. Displaying of relentless streams ofR -22 through hairlike cylin ders. ASHRAE Transactions1991;97(1):139 - 48.

9. P.K. Bansal, G. Wang. Numerical examination of stifled refrigerant stream in adiabatic fine cylinders. Connected Thermal Engineering 24

(2004) 851 - 863

10. ANSYS Release 18.1. and Fluent Release 18.1 . Familiar clients' guide. USA: Fluent, 1993.

Updated: Aug 11, 2021
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