Determination of optimum working conditions R22 and R404A refrigerant mixtures in heat-pumps using Taguchi method

K. Comakli*, F. Simsek, O. Comakli, B. Sahin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

64 Citations (Scopus)

Abstract

In this study, refrigerants R22 and R404A five of their binary mixtures which contain about 0%, 25%, 50%, 75% and 100% mass fractions of R404A were tested. It is investigated experimentally the effects of gas mixture rate, evaporator air inlet temperature (from 24 to 32 °C), evaporator air mass flow rate (from 0.58 to 0.74 kg/s), condenser air inlet temperature (from 22 to 34 °C) and condenser air mass flow rate (from 0.57 to 0.73 kg/s) on the coefficient of performance (COP) and exergetic efficiency values of vapor compression heat-pump systems. To determine the effect of the chosen parameters on the system and optimum working conditions, an experimental design method suggested by Genichi Taguchi was used. In this study, it was observed that the most effective parameters are found to be the condenser air inlet temperature for COP and exergetic efficiency.

Original languageEnglish
Pages (from-to)2451-2458
Number of pages8
JournalApplied Energy
Volume86
Issue number11
DOIs
Publication statusPublished - Nov 2009
Externally publishedYes

Funding

This work was supported by The Turkish Scientific and Technological Research Council of Turkey (TUBITAK Project No. 105M030) and Ataturk University, Research Project Foundation (Project No. BAP-2005/16). The Authors wish to thank to TUBITAK and Ataturk University.

FundersFunder number
Ataturk University
TUBITAK105M030
Turkish Scientific and Technological Research Council of TURKEY

    Keywords

    • Gas mixture
    • Heat-pump
    • R22
    • R404A
    • Taguchi method

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