An active defrost scheme with a balanced energy consumption and food quality loss in supermarket refrigeration systems

Junping Cai, Jakob Stoustrup, Bjarne Dindler Rasmussen

Research output: Contribution to journalConference article in JournalResearchpeer-review

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Abstract

This paper introduces food quality as a new parameter, together with energy, to determine an optimal cooling time between defrost cycles. A new defrost-on-demand scheme is proposed. It uses a feedback loop consisting of on-line model updating and estimation as well as a model based optimization. This scheme automatically adjusts the time interval between defrost cycles with varying operating conditions, continuously seeking an optimal time interval, featuring either an energy optimal time, or a trade-off between energy consumption and food quality loss. This adaptive approach is compared with traditional defrost schemes, found to be able to reduce energy consumption significantly.
Original languageEnglish
Book seriesElsevier IFAC Publications / IFAC Proceedings series
Issue number1
ISSN1474-6670
Publication statusPublished - 2008
Event17th IFAC World Congress - Seoul, Korea, Republic of
Duration: 6 Jul 200811 Jul 2008
Conference number: 17

Conference

Conference17th IFAC World Congress
Number17
CountryKorea, Republic of
CitySeoul
Period06/07/200811/07/2008

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Refrigeration
Energy utilization
Cooling
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title = "An active defrost scheme with a balanced energy consumption and food quality loss in supermarket refrigeration systems",
abstract = "This paper introduces food quality as a new parameter, together with energy, to determine an optimal cooling time between defrost cycles. A new defrost-on-demand scheme is proposed. It uses a feedback loop consisting of on-line model updating and estimation as well as a model based optimization. This scheme automatically adjusts the time interval between defrost cycles with varying operating conditions, continuously seeking an optimal time interval, featuring either an energy optimal time, or a trade-off between energy consumption and food quality loss. This adaptive approach is compared with traditional defrost schemes, found to be able to reduce energy consumption significantly.",
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An active defrost scheme with a balanced energy consumption and food quality loss in supermarket refrigeration systems. / Cai, Junping; Stoustrup, Jakob; Rasmussen, Bjarne Dindler.

In: Elsevier IFAC Publications / IFAC Proceedings series, No. 1, 2008.

Research output: Contribution to journalConference article in JournalResearchpeer-review

TY - GEN

T1 - An active defrost scheme with a balanced energy consumption and food quality loss in supermarket refrigeration systems

AU - Cai, Junping

AU - Stoustrup, Jakob

AU - Rasmussen, Bjarne Dindler

N1 - Volumne: 17

PY - 2008

Y1 - 2008

N2 - This paper introduces food quality as a new parameter, together with energy, to determine an optimal cooling time between defrost cycles. A new defrost-on-demand scheme is proposed. It uses a feedback loop consisting of on-line model updating and estimation as well as a model based optimization. This scheme automatically adjusts the time interval between defrost cycles with varying operating conditions, continuously seeking an optimal time interval, featuring either an energy optimal time, or a trade-off between energy consumption and food quality loss. This adaptive approach is compared with traditional defrost schemes, found to be able to reduce energy consumption significantly.

AB - This paper introduces food quality as a new parameter, together with energy, to determine an optimal cooling time between defrost cycles. A new defrost-on-demand scheme is proposed. It uses a feedback loop consisting of on-line model updating and estimation as well as a model based optimization. This scheme automatically adjusts the time interval between defrost cycles with varying operating conditions, continuously seeking an optimal time interval, featuring either an energy optimal time, or a trade-off between energy consumption and food quality loss. This adaptive approach is compared with traditional defrost schemes, found to be able to reduce energy consumption significantly.

M3 - Conference article in Journal

JO - I F A C Workshop Series

JF - I F A C Workshop Series

SN - 1474-6670

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