Scientists have engineered a water-soluble pyrimidone molecule that captures solar heat and releases it days or weeks later—enough to boil water on demand.
storage per liter is only about 80% more than water at 60C differential (useful for hydronic floor heating), but per square meter of panel in sun only gains 2wh/hour, whereas water could gain close to 1000wh/hour. A bit complex to extract the heat as well.
storage per liter is only about 80% more than water at 60C differential (useful for hydronic floor heating), but per square meter of panel in sun only gains 2wh/hour, whereas water could gain close to 1000wh/hour. A bit complex to extract the heat as well.