Improving demand response potential of a supermarket refrigeration system: A food temperature estimation approach

Rasmus Pedersen, John Schwensen , Benjamin Biegel, Torben Green, Jakob Stoustrup

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

3 Citationer (Scopus)

Resumé

In a smart grid the load shifting capabilities of demand-side devices such as supermarkets are of high interest. In supermarkets this potential is represented by the ability to store energy in the thermal mass of refrigerated foodstuff. To harness the full load shifting potential we propose a method for estimating food temperature based on measurements of evaporator expansion valve opening degree. This method requires no additional hardware or system modeling. We demonstrate the estimation method on a real supermarket display case and the applicability of knowing food temperature is shown through tests on a full scale supermarket refrigeration system made available by Danfoss A/S. The conducted application test shows that feedback based on food temperature can increase the demand flexibility during a step by approx. 60 % the first 70 minutes and up to 100%over the first 150 minutes - thereby strengthening the demand response potential of supermarket refrigeration systems.
OriginalsprogEngelsk
TidsskriftI E E E Transactions on Control Systems Technology
Vol/bind25
Udgave nummer3
Sider (fra-til)855 - 863
ISSN1063-6536
DOI
StatusUdgivet - maj 2017

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Refrigeration
Evaporators
Temperature
Display devices
Feedback
Hardware

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title = "Improving demand response potential of a supermarket refrigeration system: A food temperature estimation approach",
abstract = "In a smart grid the load shifting capabilities of demand-side devices such as supermarkets are of high interest. In supermarkets this potential is represented by the ability to store energy in the thermal mass of refrigerated foodstuff. To harness the full load shifting potential we propose a method for estimating food temperature based on measurements of evaporator expansion valve opening degree. This method requires no additional hardware or system modeling. We demonstrate the estimation method on a real supermarket display case and the applicability of knowing food temperature is shown through tests on a full scale supermarket refrigeration system made available by Danfoss A/S. The conducted application test shows that feedback based on food temperature can increase the demand flexibility during a step by approx. 60 {\%} the first 70 minutes and up to 100{\%}over the first 150 minutes - thereby strengthening the demand response potential of supermarket refrigeration systems.",
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Improving demand response potential of a supermarket refrigeration system : A food temperature estimation approach. / Pedersen, Rasmus; Schwensen , John ; Biegel, Benjamin; Green, Torben; Stoustrup, Jakob.

I: I E E E Transactions on Control Systems Technology, Bind 25, Nr. 3, 05.2017, s. 855 - 863.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Improving demand response potential of a supermarket refrigeration system

T2 - A food temperature estimation approach

AU - Pedersen, Rasmus

AU - Schwensen , John

AU - Biegel, Benjamin

AU - Green, Torben

AU - Stoustrup, Jakob

PY - 2017/5

Y1 - 2017/5

N2 - In a smart grid the load shifting capabilities of demand-side devices such as supermarkets are of high interest. In supermarkets this potential is represented by the ability to store energy in the thermal mass of refrigerated foodstuff. To harness the full load shifting potential we propose a method for estimating food temperature based on measurements of evaporator expansion valve opening degree. This method requires no additional hardware or system modeling. We demonstrate the estimation method on a real supermarket display case and the applicability of knowing food temperature is shown through tests on a full scale supermarket refrigeration system made available by Danfoss A/S. The conducted application test shows that feedback based on food temperature can increase the demand flexibility during a step by approx. 60 % the first 70 minutes and up to 100%over the first 150 minutes - thereby strengthening the demand response potential of supermarket refrigeration systems.

AB - In a smart grid the load shifting capabilities of demand-side devices such as supermarkets are of high interest. In supermarkets this potential is represented by the ability to store energy in the thermal mass of refrigerated foodstuff. To harness the full load shifting potential we propose a method for estimating food temperature based on measurements of evaporator expansion valve opening degree. This method requires no additional hardware or system modeling. We demonstrate the estimation method on a real supermarket display case and the applicability of knowing food temperature is shown through tests on a full scale supermarket refrigeration system made available by Danfoss A/S. The conducted application test shows that feedback based on food temperature can increase the demand flexibility during a step by approx. 60 % the first 70 minutes and up to 100%over the first 150 minutes - thereby strengthening the demand response potential of supermarket refrigeration systems.

U2 - 10.1109/TCST.2016.2583958

DO - 10.1109/TCST.2016.2583958

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SP - 855

EP - 863

JO - I E E E Transactions on Control Systems Technology

JF - I E E E Transactions on Control Systems Technology

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