The Coolar system is a medical refrigerator that uses warm water generated through solar energy to provide an affordable, durable, and sustainable solution for vaccine, medicine, and food storage in regions with unreliable or expensive electricity. Coolar is currently in a prototype stage.
This product is a prototype as of June 2017 and no distributors or implementors have been established, although Coolar is in the process of teaming up with industry partners and developmental organizations like Doctor’s Without Borders to bring the solution to market.
The price is unknown as of June, 2017 because this product is a prototype.
The time in hours without (solar) energy input during which all points in the vaccine compartment remain between +2°C and +10°C without (solar) energy input and at the maximum ambient temperature of the temperature zone for which the appliance is rated.
How it works
The absorption cooling cycle
Part of the water evaporates in the evaporator due to low pressure in the system. The resulting evaporation cooling effect cools the storage compartment.
The absorbent attracts vapour, binds it on its surface and frees up space in the evaporator. In that space more water evaporates, so multiplying the cooling effect.
Once the absorbent’s surface is filled with vapour, the cooling is paused temporarily. In order for the process to be repeated the absorbent must be dried.
By heating, the absorbent is then dried and all of the vapour is released from its surface. The vapour then condenses and flows back into the evaporators. This completes the cycle.
In developing nations, up to 75% of vaccines are damaged due to storage at too high or too low a temperature. Delivering damaged vaccines does not effectively influence disease control. Source: Coolar website
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