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Applied Sciences
Volume 11
Issue 17
10.3390/app11177882
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Article

Multipurpose System for Cryogenic Energy Storage and Tri-Generation in a Food Factory: A Case Study of Producing Frozen French Fries

by
Dimityr Popov
1,*,
Stepan Akterian
2,
Kostadin Fikiin
1 and
Borislav Stankov
1
1
Faculty of Energy Engineering, Technical University of Sofia, 8 Sv. Kliment Ohridski Blvd., 1756 Sofia, Bulgaria
2
Technological Faculty, University of Food Technologies, 26 Maritza Blvd., 4002 Plovdiv, Bulgaria
*
Author to whom correspondence should be addressed.
Appl. Sci. 2021, 11(17), 7882; https://doi.org/10.3390/app11177882
Submission received: 23 July 2021 / Revised: 18 August 2021 / Accepted: 22 August 2021 / Published: 26 August 2021
(This article belongs to the Special Issue New Frontiers in Food Engineering)
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Abstract

This contribution elaborates on a futuristic hybrid concept for the multifunctional employment of a liquid air energy storage (LAES) system for combined heat, cold and power production (tri-generation) in a food factory, thereby providing a substantial part of the energy demand for various unit operations and enhancing the round-trip efficiency (RTE) of LAES. A processing line for frozen French fries, with relatively high heating and refrigeration demands, is used as a case study. The total useful energy output per charge/discharge cycle is 61,677 kWh (i.e., 38,295 kWh of electricity, 19,278 kWh of heating, and 4104 kWh of refrigeration). The estimated tri-generation RTE of the studied system reaches 55.63%, which appears to be 1.2 times higher than the RTE of a classical standalone LAES system with the same power input, considered as a baseline. In a broader context, such a performance enhancement by amalgamating food and energy technologies can make cryogenic energy storage a more viable grid balancing option capable of substantially increasing the share of renewables in the energy supply mix.
Keywords: refrigeration; food processing; cryogenics; LAES; renewable energy; polygeneration refrigeration; food processing; cryogenics; LAES; renewable energy; polygeneration

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MDPI and ACS Style

Popov, D.; Akterian, S.; Fikiin, K.; Stankov, B. Multipurpose System for Cryogenic Energy Storage and Tri-Generation in a Food Factory: A Case Study of Producing Frozen French Fries. Appl. Sci. 2021, 11, 7882. https://doi.org/10.3390/app11177882

AMA Style

Popov D, Akterian S, Fikiin K, Stankov B. Multipurpose System for Cryogenic Energy Storage and Tri-Generation in a Food Factory: A Case Study of Producing Frozen French Fries. Applied Sciences. 2021; 11(17):7882. https://doi.org/10.3390/app11177882

Chicago/Turabian Style

Popov, Dimityr, Stepan Akterian, Kostadin Fikiin, and Borislav Stankov. 2021. "Multipurpose System for Cryogenic Energy Storage and Tri-Generation in a Food Factory: A Case Study of Producing Frozen French Fries" Applied Sciences 11, no. 17: 7882. https://doi.org/10.3390/app11177882

APA Style

Popov, D., Akterian, S., Fikiin, K., & Stankov, B. (2021). Multipurpose System for Cryogenic Energy Storage and Tri-Generation in a Food Factory: A Case Study of Producing Frozen French Fries. Applied Sciences, 11(17), 7882. https://doi.org/10.3390/app11177882

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