Share

IIR document

Evaporation heat transfer coefficients of ammonia and CO2 inside a smooth tube.

Author(s) : ZHAO Y., OHADI M. M., DESSIATOUN S. V., SCHUSTER A., MCNAIR A., RADERMACHER R., DARABI J.

Summary

In-tube evaporation heat transfer coefficients of ammonia and CO2 were determined experimentally in a smooth tube. All experiments were conducted at an evaporative temperature of 15 deg C. The experiments were conducted as a function of mass flow rate(which ranged from 130 to 190 kg/(m2.s) for ammonia and 140 to 440 kg/(m2.s) for CO2, and heat flux (which ranged from 1,000 to 50,000 watts/m2 for ammonia and 2,250 to 40,000 watts/m2 for CO2). It was found that at the same mass flow rate and heat flux, the heat transfer coefficient of ammonia was 10 to 15 % higher than that of CO2, and higher than R22 and R134a.

Available documents

Format PDF

Pages: 1997-5

This document is to be digitised and will be available within 10 working days

  • Public price

    20 €

  • Member price*

    Free

* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).

Details

  • Original title: Evaporation heat transfer coefficients of ammonia and CO2 inside a smooth tube.
  • Record ID : 1998-2748
  • Languages: English
  • Source: Heat transfer issues in "natural" refrigerants. International conference.
  • Publication date: 1997/11/06
  • Document available for consultation in the library of the IIR headquarters only.

Links


See other articles from the proceedings (21)
See the conference proceedings

Indexing