Scientists at King Abdullah University of
Science and Technology in Saudi Arabia developed an electricity-free cooling
system named Nescod
¨
Scientists at King
Abdullah University of Science and Technology in Saudi Arabia developed an
electricity-free cooling system named Nescod.
¨
Nescod stands for “No
Electricity and Sustainable Cooling on Demand.”
¨
The system operates
without compressors or continuous electrical power.
¨
It uses ammonium nitrate
and water in a chemical cooling process.
¨
Nescod works on the principle
of endothermic dissolution.
¨
In this process, a
substance absorbs heat while dissolving in water.
¨
Ammonium nitrate
dissolves in water and lowers the surrounding temperature.
¨
The system uses solar
energy to evaporate water and regenerate the salt for repeated cooling cycles.
¨
Ammonium nitrate is an
inorganic salt with the chemical formula NH4NO3.
¨
It is commonly used in
fertilisers and cooling applications.
¨
During testing, the
system reduced temperature from about 25°C to nearly 3.6°C.
¨
The cooling process took
around 20 minutes.
¨
The system was nearly
four times more efficient than ammonium chloride in the same setup.
¨
Ammonium nitrate is
inexpensive and readily available.
¨ It is also simple to store and suitable for repeated cooling use.
¨ The system is designed for dry and hot environmental conditions.
