The solar cooling system maintains water from 9 degrees Celsius to 3 months.
Food preservation in hot areas with little energy and minimal cost is now possible thanks to Mexican technology because of the development of the solar cooling system created by Susana Elvia Toledo Flores.
The Research Department developed the prototype in Zeolites at the Institute of Science at the Meritorious University of Puebla (BUAP), located in central Mexico. It is available 24 hours a day and can keep the cold at bay for three months.
The researcher designed the prototype within the Black Mountain Range of the state. There she was able to achieve the goal of keeping the temperature of water at 9.0 degrees Celsius “with this temperature, it is possible to cool food items, but the aim is to reach a temperature of five degrees, and this way, fish being preserved without denatured proteins.”
This BUAP design is low-cost, easy to build, and environmentally sustainable. Ours is green and safe for the environment,” explains Toledo Flores.
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Methanol is utilized for refrigerant and Zeolite (mineral) in the form of an Adsorbent.
Toledo Flores says the system is composed of two phases, during the daytime “warming desorption,” then the time when condensation occurs. Solar energy warms the Zeolite, which increases the vapor pressure of methanol. The refrigerant gets condensed and placed in an underground tank that flows through the Evaporator. “
The cooling process continues overnight. Once the desired temperature is completed and adsorption and evaporation time is completed. Consequently, the refrigerant’s pressure is decreased, and it evaporates as the absorbent cools. This time, the coolant is beginning to evaporate and be absorbed by Zeolite. This results in cooling temperatures of 5 degrees Celsius. The process of adsorption continues all night and into the morning. “
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The apparatus consists of a solar collector condenser, adsorbent bed, and Evaporator. To construct it, the scientist calculates the quantity of water that needs to be chilled and is aware of the number of zeolites to utilize. The researcher also considers the temperature in the room, that is, in this instance, 20 ° Celsius.
Additionally, The system “is not just designed to cool food items. It can also be used as an air conditioner, for instance, in communities such as Tecali De Herrera Puebla and other no electricity sources. The system can be adapted to protect their food and medicines, providing them with a greater quality of life,” states Toledo Flores.
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