The status of refrigeration solutions for last mile vaccine delivery in low-income settings

Cattin, Magali; Jonnalagedda, Sashidhar; Makohliso, Solomzi; Schönenberger, Klaus

doi:10.1016/j.jvacx.2022.100184

Cited by 3 publications

(3 citation statements)

References 51 publications

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“…In most existing studies involving drones for biological sample delivery, samples are typically kept frozen/cold on a UAV using passive methods such as dry ice, conditioned ice packs, and thermally sealed containers [15][16][17][18][19][20][21][22]. Both fixed wing [23] and multicopter [24] vehicles have been used to deliver vaccines and other medical products, however active cooling has not been demonstrated on either of these vehicles.…”

Section: Introductionmentioning

confidence: 99%

“…A major alternative to passive cooling strategies is refrigeration. Though a refrigerator can be put on a UAV, the weight and power requirements that significantly cut down the range do not make this an attractive solution [15]. While there are multiple cooling methods [28] (see Table A1), thermoelectric modules using the Peltier effect are ideally suited because they are solid-state and light weight [29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

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Design and Characterization of an Active Cooling System for Temperature-Sensitive Sample Delivery Applications Using Unmanned Aerial Vehicles

Pamula,

Ramachandran

2024

Drones

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The transport of temperature-sensitive biological samples (blood, medicines, patient samples, vaccines, organs, etc.) to hard-to-reach places remains a challenge. This is especially true in places where infrastructure is limited, for which the use of unmanned aerial vehicles (UAVs) is an attractive solution. In this project, a cooling system compatible with on-board drone applications for the delivery of samples that require cold temperature storage and transportation was built, tested, and characterized. Specifically, a miniature polystyrene cooling unit with Peltier coolers was designed and built, enabling temperatures as low as −10 °C within the unit to be achieved. Further, passive and active cooling control strategies including the use of active feedback-control were explored to achieve a consistent temperature range between 2 °C and 8 °C. Finally, calculations of on-board power and battery weight required to achieve target cooling performance as a function of ambient environmental conditions are presented. Overall, this study presents an important step towards the design and development of drone-based technologies for temperature-sensitive sample delivery.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design and Characterization of an Active Cooling System for Temperature-Sensitive Sample Delivery Applications Using Unmanned Aerial Vehicles

Pamula,

Ramachandran

2024

Drones

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“…A solar portable smart vaccine fridge is very essential in many applications [1], but it is so useful and crucial in the field of medicine to fight against Covid-19. This refrigerator can be used to take the drug to a place where patients could be extremely far from hospitals or medication centers [2]. This transportation can be a very long trip to deliver to people in need.…”

Section: Introductionmentioning

confidence: 99%

An Experimental Investigation of a Portable Solar Thermoelectric Fridge for Storing Some Vaccines

Salim

Alsalam

Rifaie

2023

Preprint

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An experiment was conducted to determine the performance of a portable thermoelectric fridge used for storing some vaccines powered by a solar panel. The inner size of the cooler box tested was 240 mm × 240 mm × 170 mm with 8kg net weight of the fridge and it can accommodate 9.8 liters of medical supplies. A thermoelectric module ESUMIC DC 12V was used in the test. The thermoelectric hot side was cooled by using air, meanwhile, the cold side of the thermoelectric was connected to the inner heat sink to absorb heat inside the cooler box. The thermoelectric was powered by a portable solar panel and battery directly to each thermoelectric which had a power of 100 WP. The battery controls and maintains the system’s voltage while it is being charged by the portable solar panel. It also supports and supplies the system with enough power. The cooler container was tested for one hour of daylight on 16 April, 21 May, 10 June, and 10 July respectively in 2021. The results showed that the lowest temperature on the thermoelectric cold side and center of the fridge was around 1.5°C and 8.6°C after one hour of working time. The experimental COP obtained were ranging from 0.12 to 0.71. Moreover, solar panels were the potential as power sources for thermoelectric cooling systems.

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Decolonising vaccine production: Unpacking Ghanaians’ support for made-in-Africa vaccines

et al. 2023

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The status of refrigeration solutions for last mile vaccine delivery in low-income settings

Cited by 3 publications

References 51 publications

Design and Characterization of an Active Cooling System for Temperature-Sensitive Sample Delivery Applications Using Unmanned Aerial Vehicles

Design and Characterization of an Active Cooling System for Temperature-Sensitive Sample Delivery Applications Using Unmanned Aerial Vehicles

An Experimental Investigation of a Portable Solar Thermoelectric Fridge for Storing Some Vaccines

Decolonising vaccine production: Unpacking Ghanaians’ support for made-in-Africa vaccines

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