Automotive climate control systems are typically equipped with either an orifice tube or a thermostatic expansion valve. The two devices behave differently especially during cycling operation. The variable restriction of the thermostatic expansion valve delays the refrigerant migration when the clutch is disengaged and allows a faster redistribution when the clutch is engaged. The effect of cycling on the performance of two climate control systems, one with a short-tube orifice, and the other with a thermostatic expansion device, was investigated. The cycle period was varied from 10 seconds to 6 minutes. The test results show the change in moisture removal rate, latent capacity, sensible capacity, energy consumption, and coefficient of performance due to cycling. It is shown that the penalty in energy consumption due to cycling depends on the cycle period.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Cycling in Climate Control Systems with Orifice Tube and Thermostatic Expansion Valve


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    SAE World Congress & Exhibition ; 2007



    Publication date :

    2007-04-16




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Cycling in climate control systems with orifice tube and thermostatic expansion valve

    Hwang,Y. / Gado,A. / Radermacher,R. et al. | Automotive engineering | 2007


    Two stage orifice tube - performance in a cycling clutch orifice tube system

    Laboe,K.J. / Gondusky,J.M. / Chrysler,US et al. | Automotive engineering | 1995


    Two Stage Orifice Tube - Performance in a Cycling Clutch Orifice Tube System

    Laboe, K. J. / Gondusky, J. M. / SAE | British Library Conference Proceedings | 1995


    Two Stage Orifice Tube - Performance in a Cycling Clutch Orifice Tube System

    Gondusky, Joseph M. / Laboe, Kevin J. | SAE Technical Papers | 1995