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An experimental comparison of the refrigerant flow along adiabatic and diabatic coiled capillary tubes.

Number: pap. 2655

Author(s) : ZAREH M., JAVIDMAND P., HOFFMANN K. A.

Summary

This paper presents experimental comparison of the R134a flow through lateral coiled capillary tubes-suction line heat exchanger (diabatic) and adiabatic coiled capillary tubes in vapor compression refrigeration cycle (VCRC). The experimental results illustrated that mass flux ratio (Gc/Gs) is main parameter that affects metastable flow through non-adiabatic coiled capillary tube. Therefore, an increase of the mass flux ratio represents a decrease of the heat transfer rate between the capillary tube and suction line. The measured and saturated pressure distribution also proof that metastable flow in the non-adiabatic coiled capillary tube with 1.397 mm inner diameter, 30 mm coil diameter, 4360 mm length, 4 mm inner diameter of suction tube exists, when the heat transfer rate between the coiled capillary tube and the suction line is weak with mass flux ratio more than 343.

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Pages: 10 p.

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Details

  • Original title: An experimental comparison of the refrigerant flow along adiabatic and diabatic coiled capillary tubes.
  • Record ID : 30013242
  • Languages: English
  • Source: 2014 Purdue Conferences. 15th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2014/07/14

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