Solar-Hybrid Cold Energy Storage System Coupled with Cooling Pads Backup: A Step towards Decentralized Storage of Perishables

Post-harvest loss is a serious issue to address challenge of food security. A solar-grid hybrid cold storage system was developed and designed for on-farm preservation of perishables. Computational Fluid Dynamic analysis was performed to assess airflow and temperature distribution inside the cold ch...

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Autores principales: Anjum Munir, Tallha Ashraf, Waseem Amjad, Abdul Ghafoor, Sidrah Rehman, Aman Ullah Malik, Oliver Hensel, Muhammad Sultan, Tatiana Morosuk
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Publicado: MDPI AG 2021
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spelling oai:doaj.org-article:29c16efd30f340aeb14c196284d99f2f2021-11-25T17:27:25ZSolar-Hybrid Cold Energy Storage System Coupled with Cooling Pads Backup: A Step towards Decentralized Storage of Perishables10.3390/en142276331996-1073https://doaj.org/article/29c16efd30f340aeb14c196284d99f2f2021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/22/7633https://doaj.org/toc/1996-1073Post-harvest loss is a serious issue to address challenge of food security. A solar-grid hybrid cold storage system was developed and designed for on-farm preservation of perishables. Computational Fluid Dynamic analysis was performed to assess airflow and temperature distribution inside the cold chamber. The system comprises a 21.84 m<sup>3</sup> cubical cold storage unit with storage capacity of 2 tonnes. A hybrid solar system comprising 4.5 kWp PV system, 5 kW hybrid inverter, and 600 Ah battery bank was used to power the entire system. A vapor-compression refrigeration system (2 tonnes) was employed coupled with three cooling pads (filled with brine solution) as thermal backup to store cooling (−4 °C to 4 °C). Potatoes were stored at 8 °C for a period of three months (May 2019 to July 2019) and the system was tested on grid utility, solar, and hybrid modes. Solar irradiation was recorded in range of 5.0–6.0 kWh/(m<sup>2</sup> × d) and average power peak was found to be 4.0 kW. Variable frequency drive was installed with compressor to eliminate the torque load and it resulted about 9.3 A AC current used by the system with 4.6 average Coefficient of Performance of refrigeration unit. The average energy consumed by system was found to be 15 kWh with a share of 4.3 kWh from grid and 10.5 kWh from solar, translating to 30% of power consumption from grid and 70% from solar PV modules. Overall, cold storage unit efficiently controlled total weight loss (7.64%) and preserved quality attributes (3.6 ⁰Brix Total soluble solids, 0.83% Titratable acidity, 6.32 PH) of the product during storage time.Anjum MunirTallha AshrafWaseem AmjadAbdul GhafoorSidrah RehmanAman Ullah MalikOliver HenselMuhammad SultanTatiana MorosukMDPI AGarticlesolar coolingpost-harvest food lossesdecentralized food storagecooling padsTechnologyTENEnergies, Vol 14, Iss 7633, p 7633 (2021)
institution DOAJ
collection DOAJ
language EN
topic solar cooling
post-harvest food losses
decentralized food storage
cooling pads
Technology
T
spellingShingle solar cooling
post-harvest food losses
decentralized food storage
cooling pads
Technology
T
Anjum Munir
Tallha Ashraf
Waseem Amjad
Abdul Ghafoor
Sidrah Rehman
Aman Ullah Malik
Oliver Hensel
Muhammad Sultan
Tatiana Morosuk
Solar-Hybrid Cold Energy Storage System Coupled with Cooling Pads Backup: A Step towards Decentralized Storage of Perishables
description Post-harvest loss is a serious issue to address challenge of food security. A solar-grid hybrid cold storage system was developed and designed for on-farm preservation of perishables. Computational Fluid Dynamic analysis was performed to assess airflow and temperature distribution inside the cold chamber. The system comprises a 21.84 m<sup>3</sup> cubical cold storage unit with storage capacity of 2 tonnes. A hybrid solar system comprising 4.5 kWp PV system, 5 kW hybrid inverter, and 600 Ah battery bank was used to power the entire system. A vapor-compression refrigeration system (2 tonnes) was employed coupled with three cooling pads (filled with brine solution) as thermal backup to store cooling (−4 °C to 4 °C). Potatoes were stored at 8 °C for a period of three months (May 2019 to July 2019) and the system was tested on grid utility, solar, and hybrid modes. Solar irradiation was recorded in range of 5.0–6.0 kWh/(m<sup>2</sup> × d) and average power peak was found to be 4.0 kW. Variable frequency drive was installed with compressor to eliminate the torque load and it resulted about 9.3 A AC current used by the system with 4.6 average Coefficient of Performance of refrigeration unit. The average energy consumed by system was found to be 15 kWh with a share of 4.3 kWh from grid and 10.5 kWh from solar, translating to 30% of power consumption from grid and 70% from solar PV modules. Overall, cold storage unit efficiently controlled total weight loss (7.64%) and preserved quality attributes (3.6 ⁰Brix Total soluble solids, 0.83% Titratable acidity, 6.32 PH) of the product during storage time.
format article
author Anjum Munir
Tallha Ashraf
Waseem Amjad
Abdul Ghafoor
Sidrah Rehman
Aman Ullah Malik
Oliver Hensel
Muhammad Sultan
Tatiana Morosuk
author_facet Anjum Munir
Tallha Ashraf
Waseem Amjad
Abdul Ghafoor
Sidrah Rehman
Aman Ullah Malik
Oliver Hensel
Muhammad Sultan
Tatiana Morosuk
author_sort Anjum Munir
title Solar-Hybrid Cold Energy Storage System Coupled with Cooling Pads Backup: A Step towards Decentralized Storage of Perishables
title_short Solar-Hybrid Cold Energy Storage System Coupled with Cooling Pads Backup: A Step towards Decentralized Storage of Perishables
title_full Solar-Hybrid Cold Energy Storage System Coupled with Cooling Pads Backup: A Step towards Decentralized Storage of Perishables
title_fullStr Solar-Hybrid Cold Energy Storage System Coupled with Cooling Pads Backup: A Step towards Decentralized Storage of Perishables
title_full_unstemmed Solar-Hybrid Cold Energy Storage System Coupled with Cooling Pads Backup: A Step towards Decentralized Storage of Perishables
title_sort solar-hybrid cold energy storage system coupled with cooling pads backup: a step towards decentralized storage of perishables
publisher MDPI AG
publishDate 2021
url https://doaj.org/article/29c16efd30f340aeb14c196284d99f2f
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