TY - JOUR
T1 - Learning-Based Precool Algorithms for Exploiting Foodstuff as Thermal Energy Reserve
AU - Vinther, Kasper
AU - Rasmussen, Henrik
AU - Izadi-Zamanabadi, Roozbeh
AU - Stoustrup, Jakob
AU - G. Alleyne, Andrew
PY - 2015/3
Y1 - 2015/3
N2 - Refrigeration is important to sustain high foodstuff quality and lifetime. Keeping the foodstuff within temperature thresholds in supermarkets is also important due to legislative requirements. Failure to do so can result in discarded foodstuff, a penalty fine to the shop owner, and health issues. However, the refrigeration system might not be dimensioned to cope with hot summer days or performance degradation over time. Two learning-based algorithms are therefore proposed for thermostatically controlled loads, which precools the foodstuff in display cases in an anticipatory manner based on how saturated the system has been in recent days. A simulation model of a supermarket refrigeration system is provided and evaluation of the precool strategies shows that negative thermal energy can be stored in foodstuff to cope with saturation. A system model or additional hardware is not required, which makes the algorithms easy to implement in existing systems.
AB - Refrigeration is important to sustain high foodstuff quality and lifetime. Keeping the foodstuff within temperature thresholds in supermarkets is also important due to legislative requirements. Failure to do so can result in discarded foodstuff, a penalty fine to the shop owner, and health issues. However, the refrigeration system might not be dimensioned to cope with hot summer days or performance degradation over time. Two learning-based algorithms are therefore proposed for thermostatically controlled loads, which precools the foodstuff in display cases in an anticipatory manner based on how saturated the system has been in recent days. A simulation model of a supermarket refrigeration system is provided and evaluation of the precool strategies shows that negative thermal energy can be stored in foodstuff to cope with saturation. A system model or additional hardware is not required, which makes the algorithms easy to implement in existing systems.
U2 - 10.1109/TCST.2014.2328954
DO - 10.1109/TCST.2014.2328954
M3 - Journal article
SN - 1063-6536
VL - 23
SP - 557
EP - 569
JO - I E E E Transactions on Control Systems Technology
JF - I E E E Transactions on Control Systems Technology
IS - 2
ER -