Go to menu
Go to content
Go to footer

Flow boiling of ammonia in smooth and enhanced horizontal tubes.

Author(s) : ZUERCHER O., THOME J. R., FAVRAT D.

Summary

Experimental test results for flow boiling of pure ammonia inside horizontal tubes were obtained for a plain tube and a microfin tube. The results showed substantial heat transfer augmentation for the microfin tube at mass velocities below 80 kilograms per square meter and per second while little or no augmentation was observed at higher mass velocities. Two-phase pressure drops for the microfin tube were typically about 50% higher than for the plain tube at similar test conditions.

Details

Original title: Flow boiling of ammonia in smooth and enhanced horizontal tubes.
Record ID : 1998-3428
Languages: English
Source: Compression systems with natural working fluids. International R&D on heat pump, air conditioning and refrigerating systems. Workshop proceedings.
Publication date: 1997/10/02
Document available for consultation in the library of the IIR headquarters only.

Links

See other articles from the proceedings (14)
See the conference proceedings

Indexing

Themes: Mass transfer;
Ammonia
Keywords: Horizontal tube; Extended surface; Measurement; Mass transfer; Heat transfer; Ammonia; Refrigerant; Boiling; Pressure drop