Agriculture
August 21, 2024
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Updated on August 20, 2024
·Created on August 8, 2017
Evaptainers EV-8 is a mobile refrigeration system used for keeping fruits, vegetables and Dairy products fresh in the summer season.
The EV-8 is a portable, lightweight refrigeration unit designed to keep perishable items such as fruits, vegetables, and dairy products fresh without requiring electricity. The unit uses evaporative cooling technology, which can reduce internal temperatures by 20-30 °F, depending on ambient conditions. This feature makes the EV-8 potentially useful in hot climates or situations where electricity is not available, including natural disasters, where it could also be used to store medical supplies at cooler temperatures.
The EV-8 was developed by a team of designers and, although prototypes have been tested, it is not yet available on the market.
Target SDGs
SDG 2: Zero Hunger
Market Suggested Retail Price
$30.00
Target Users (Target Impact Group)
Household
Distributors / Implementing Organizations
Evaptainer
Competitive Landscape
Direct competitors include Wakati One, Chotukool, Mitticool Clay Refrigerator, and Zeer Pot.
Manufacturing/Building Method
This product is mass produced in China. Interview with representative
Intellectural Property Type
Patent
User Provision Model
Direct from manufacturer
Distributions to Date Status
As of 2019, 1000 units have been produced, 250 of which were used in Morocco for initial field testing, and 150 of which were donated to low-income families in Morocco. Interview with representative
Storage capacity (L)
60
Time to cool (hr)
0.5 hours/ 30 minutes Interview with representative
Cooling retention (hr)
As long as it has water it will remain cool, water deposit can last 1-6 days. Interview with representative
Temperature control
No
Minimum internal temperature (°C)
15-20 degrees Celsius less than ambient conditions
Materials of construction
Expanded polypropylene
Protection from insect entry
Yes
Refrigeration cycle catalyst
The internal reservoir is filled with water and is transported through the walls of the device to the surface where it evaporates, cooling the inside of the chamber through the latent heat of vaporization.
Design Specifications
The EV-8 employs PhaseTek technology to enhance evaporative cooling, achieving a cooling effect of 15-20°C below ambient conditions without using electricity. This technology activates when water is added to the internal reservoir, which could be sourced from taps, wells, rivers, or lakes. As water evaporates through the walls of the device, heat is drawn out from the interior, creating a cooling effect. The design includes a collapsible structure with dimensions of 57 x 45 x 39.5 cm when expanded and 57 x 45 x 11.6 cm when collapsed. The empty unit weighs 2 kg and can hold 60 liters of food and 3.8 liters of water. Made from food-safe plastic, the EV-8 features an internal chamber for storing food and a water reservoir positioned between the chamber and the outer wall. The cooling capacity of the EV-8 varies based on ambient air temperature and relative humidity.
Technical Support
Tech support can be requested via e-mail, available in the US and Morocco. Interview with representative
Replacement Components
Some components are available upon request. Interview with representative
Lifecycle
It has a 1 year full warranty and 3 years limited warranty. So far the first prototypes tested have lasted 2.5 years without problems. Interview with representative
Manufacturer Specified Performance Parameters
The EV-8 can cool its internal storage space by 15-20 degrees Celsius from ambient conditions, potentially extending food shelf life from 2 days to 2 weeks. It is said to reduce the spoilage rate by at least 10%. Designer specified performance targets include lightweight and fully portable. The designer provides a graph that shows the expected internal temperature in degrees Celsius given ambient air temperature and relative humidity.
Vetted Performance Status
According to manufacturer's field testing the EV-8 is 5% more thermally efficient than a Zeer Pot. The impact on users is said to be a 10% of income savings, due to the time users can work instead of going to the market. Interview with representative
Safety
No safety precautions specified.
Complementary Technical Systems
Biogas or solar cookstove.
Academic Research and References
Lim, C., & Nair, T., 2017, Cooling Future Urban Habitats: Technology Based on Human Body? (RSIS Commentaries, No. 017). RSIS Commentaries. Singapore: Nanyang Technological University.
Nair T and Lim CH., 2017, Science, Technology and Human Security-Fighting Food Wastage: New Ideas From the Past. (RSIS Commentaries, No. 016). RSIS Commentaries. Singapore: Nanyang Technological University.
Basediya, A. L., Samuel, D.V.K., and Beera, V., 2013, Evaporative cooling system for storage of fruits and vegetables – a review, J Food Sci Technol, 50, pp. 429–442.
Riangvilaikul, B. and Kumar, S., 2010, An experimental study of a novel dew point evaporative cooling system, Energy and Buildings, 42(5), pp. 637-644.
Heidarinejad, G., Bozorgmehr, M., Delfani, S. and Esmaeelian, J., 2009, Experimental investigation of two-stage indirect/direct evaporative cooling system in various climatic conditions, Building and Environment, 44(10), pp. 2073-2079.
Compliance with regulations
All materials are food grade standard Interview with representative
Other Information
The Fenik Yuma 60 L was funded by a crowdfunding campaign on Kickstarter. The company has a video explaining their product and how it works. The designer conducted field testing with support from USAID, National Geographic, and The Siemens-Stiftung Foundation. The usage of Evaptainers could be extended in natural disaster situations The manufacturer claims that the product can pay for itself in less than 3 months. This product is a winner of 2017 USA ASME ISHOW.
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