Sökning: "two-stage orifice valve"

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  1. 1. Open Issues in Control ofAutomotive R744 Air-ConditioningSystems

    Master-uppsats, Elektroteknik

    Författare :Sanaz Karim; [2007]
    Nyckelord :R744; Air-Conditioning; COP; Cooling power; optimization; two-stage orifice valve; Two-evaporator;

    Sammanfattning : In this thesis, one of the current control algorithms for the R744 cycle, which tries tooptimize the performance of the system by two SISO control loops, is compared to acost-effective system with just one actuator. The operation of a key component of thissystem, a two stage orifice expansion valve is examined in a range of typical climateconditions. LÄS MER