| Bed (5) |  |
Lockheed has proven technologies and the most nodule-bed data. Polymetallic nodules form over thousands of years on the sea floor, through processes that are still not fully understood;
"The adsorbent bed temperature decreases after sunset, therefore, the refrigerant pressure is reduced and evaporates while the absorbent is cooled.
"The equipment is composed of a solar collector, adsorbent bed, condenser and evaporator. To build it,
along with current Malaria prevention techniques, like bed nets. 80%of the children involved in the clinical trials were protected also by insecticide treated bed nets.
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