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Heat transfer and pressure drop during evaporation and condensation of R134a inside microfin tubes of new design.
Author(s) : COLOMBO L., MUZZIO A., NIRO A.
Summary
This paper reports on average heat transfer coefficients and pressure drops of oil-free R134a in flow-boiling and convective-condensation inside microfin tubes with a new cross-section profile. Data obtained for a smooth tube are also reported for comparison. All tubes had the same outside diameter of 9.52 mm; they were horizontally operated and heated/cooled by a water stream.
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Pages: 2005-3
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Details
- Original title: Heat transfer and pressure drop during evaporation and condensation of R134a inside microfin tubes of new design.
- Record ID : 2006-0601
- Languages: English
- Source: Commercial Refrigeration. Thermophysical Properties and Transfer Processes of Refrigerants. Proceedings of the IIR International Conferences.
- Publication date: 2005/08/02
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Indexing
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Themes:
HFCs;
Heat transfer;
Mass transfer - Keywords: R134a; Horizontal tube; Comparison; Microfin tube; Heat transfer; Bare pipe; Expérimentation; Evaporation; Refrigerant; Condensation; Boiling; Pressure drop
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- Languages : English
- Source: ASHRAE Transactions. 1998 Winter Meeting, San Francisco, CA.
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- Date : 1994
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- Source: ASHRAE Transactions 1994.
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- Languages : English
- Source: ASHRAE Transactions. 1998 Winter Meeting, San Francisco, CA.
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In-tube heat transfer and pressure drop of R134...
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- Source: ASHRAE Transactions 1994.
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- Date : 2013/06/17
- Languages : English
- Source: 4th IIR Conference on Thermophysical Properties and Transfer Processes of Refrigerants
- Formats : PDF
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