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Inner/outer-loop control methodolgy for multiple evaporator dryout avoidance under transient heat loads.

Record Type:	Language materials, manuscript : Monograph/item
Title/Author:	Inner/outer-loop control methodolgy for multiple evaporator dryout avoidance under transient heat loads./
Author:	Pollock, Daniel T.
Description:	1 online resource (152 pages)
Notes:	Source: Dissertation Abstracts International, Volume: 78-02(E), Section: B.
Contained By:	Dissertation Abstracts International78-02B(E).
Subject:	Mechanical engineering. -
Online resource:	click for full text (PQDT)
ISBN:	9781369136661

Inner/outer-loop control methodolgy for multiple evaporator dryout avoidance under transient heat loads.
Pollock, Daniel T.

Inner/outer-loop control methodolgy for multiple evaporator dryout avoidance under transient heat loads. - 1 online resource (152 pages)

Source: Dissertation Abstracts International, Volume: 78-02(E), Section: B.

Thesis (Ph.D.)

Includes bibliographical references

The increasing power density of high-performance electronics has created a need for advanced thermal management strategies. Vapor compression cycles (VCC) offer large heat transfer coefficients via low coolant temperatures and boiling heat transfer, and thus are attractive for electronics cooling. However, the high heat flux imposed by electronics requires new modeling and control techniques for VCC implementation. Challenges include transient heat loads, critical heat flux (CHF), refrigerant charge management, and multi-evaporator management. This dissertation presents research to improve the fundamental understanding of systems-level design, modeling and control of multiple evaporator VCC for high heat flux removal. An experimental testbed is presented, with the option of switching between a heated accumulator and a recuperator to maintain cycle active charge. Static component, heat transfer, and dryout models are identified, and low-order lumped dynamic system models are developed and validated for both accumulator and recuperator operation. The static and dynamic models are used to develop robust, decoupled dryout avoidance controls to provide stability, reject large thermal disturbances and improve cycle energy efficiency. Finally, experimental and simulation results are presented for control validation.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2018

Mode of access: World Wide Web

ISBN: 9781369136661Subjects--Topical Terms:

557493
Mechanical engineering.
Index Terms--Genre/Form:

554714
Electronic books.

Inner/outer-loop control methodolgy for multiple evaporator dryout avoidance under transient heat loads.
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100 1 $a Pollock, Daniel T. $3 1180271
245 1 0 $a Inner/outer-loop control methodolgy for multiple evaporator dryout avoidance under transient heat loads.
264 0 $c 2016
300 $a 1 online resource (152 pages)
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500 $a Source: Dissertation Abstracts International, Volume: 78-02(E), Section: B.
500 $a Adviser: John T. Wen.
502 $a Thesis (Ph.D.) $c Rensselaer Polytechnic Institute $d 2016.
504 $a Includes bibliographical references
520 $a The increasing power density of high-performance electronics has created a need for advanced thermal management strategies. Vapor compression cycles (VCC) offer large heat transfer coefficients via low coolant temperatures and boiling heat transfer, and thus are attractive for electronics cooling. However, the high heat flux imposed by electronics requires new modeling and control techniques for VCC implementation. Challenges include transient heat loads, critical heat flux (CHF), refrigerant charge management, and multi-evaporator management. This dissertation presents research to improve the fundamental understanding of systems-level design, modeling and control of multiple evaporator VCC for high heat flux removal. An experimental testbed is presented, with the option of switching between a heated accumulator and a recuperator to maintain cycle active charge. Static component, heat transfer, and dryout models are identified, and low-order lumped dynamic system models are developed and validated for both accumulator and recuperator operation. The static and dynamic models are used to develop robust, decoupled dryout avoidance controls to provide stability, reject large thermal disturbances and improve cycle energy efficiency. Finally, experimental and simulation results are presented for control validation.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2018
538 $a Mode of access: World Wide Web
650 4 $a Mechanical engineering. $3 557493
655 7 $a Electronic books. $2 local $3 554714
690 $a 0548
710 2 $a ProQuest Information and Learning Co. $3 1178819
710 2 $a Rensselaer Polytechnic Institute. $b Mechanical Engineering. $3 1178915
773 0 $t Dissertation Abstracts International $g 78-02B(E).
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10158658 $z click for full text (PQDT)