Development of an Intelligent Solar Based Peltier Device for Drug PreservationPosted 2 months ago
Due to loss in vaccine potency as a result of the exposure of vaccines to inappropriate temperatures, alternative solutions to vaccine storage needs to be developed to ensure that the product quality is maintained throughout the entire life cycle of the vaccine. This work focuses on employing the Peltier Effect and solid-state thermoelectric cooling to offer an alternative to temperature-regulated vaccine refrigeration. This storage facility herein referred to as the Cooling Chamber, was fabricated with Aluminum to improve the conduction of cold around the box, Styrofoam to provide the desired insulation, and Wood to provide aesthetics and support. An Arduino Uno Microcontroller is connected to a Temperature sensor (Ds18b20) to collect the temperature of the cooling chamber and use this data to control and modify the temperature produced by the Peltier device or thermoelectric cooler (TEC1-12706) between the WHO-recommended temperature range, three 12volts DC fan to improve both expeditions of heat and facilitate cooling of the chamber from two aluminium heat exchangers, an N-Channel MOSFET, SPDT Relay, for additional control and switching between states. A form of renewable energy (solar panel) is also provided in this system to checkmate temperature fluctuations due to power outages and transportation to rural centres.
This project is focused on employing the Peltier effect and solid-state thermoelectric cooling to offer an alternative to temperature-regulated vaccine refrigeration.
This work has been able to:
i. Design and construct the well-lagged cooling chamber for storing drugs (vaccine).
ii. Incorporating a thermoelectric cooler to provide the WHO-recommended temperature range for vaccine storage.
iii. Implement temperature control and modification using an Arduino Uno Microcontroller
iv. Evaluate the developed device