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Article

Effect of the Location and the Properties of Thermostatic Expansion Valve Sensor Bulb on the Stability of a Refrigeration System

[+] Author and Article Information
Veerendra Mulay, Amit Kulkarni, Dereje Agonafer

Mechanical and Aerospace Engineering Department, The University of Texas at Arlington, Arlington TX 76010e-mail: agonafer@uta.edu

Roger Schmidt

IBM Corporation, Poughkeepsie, NYe-mail: c28rrs@us.ibm.com

J. Heat Transfer 127(1), 85-94 (Feb 15, 2005) (10 pages) doi:10.1115/1.1839584 History: Received May 06, 2004; Revised August 18, 2004; Online February 15, 2005
Copyright © 2005 by ASME
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References

Figures

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IBM S/390 G4 CMOS system
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Vapor compression refrigeration system
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Definition of static superheat and open superheat
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Relationship of mass flow rate versus opening superheat for a constant pressure drop
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Behavior of refrigerant inside the evaporator
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Schematic of experimental bench
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Actual experimental setup
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Bulb locations C, B, A, A1, and A2 on the suction line
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Variation of evaporator outlet superheat; bulb location C
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Variation of evaporator outlet superheat; bulb location B
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Variation of evaporator outlet superheat; bulb location A
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Effect of change in bulb location at 1000 W load for locations A, B, and C
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Effect of change in bulb location at 750 W loads for locations A, B, and C
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Effect of change in bulb location at 500 W load for locations A, B, and C
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Superheat variation at 1000 W
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Variation in interface temperature
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Bulb and evaporator exit temperature for Valve EQ2-JC
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Bulb and evaporator exit temperature for Valve EQ2-JCP60
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Bulb and evaporator exit temperature for Valve EQ2-JZPM  

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